CN107220043A - A kind of use WPF interfaces generate the method and Report Engine of form - Google Patents
A kind of use WPF interfaces generate the method and Report Engine of form Download PDFInfo
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Abstract
The present invention provides the method and Report Engine that a kind of use WPF interfaces generate form, and the structure of Report Engine includes report form template base class, two classes of statement management module；Wherein, described report form template base class is inherited in System.Windows.Controls.UserControl classes, and the abstract public method of report form template, all report form templates are all inherited in report form template base class.Public method includes：Very first load operation, loading operation, verification operation, statistical operation, search operation obtains printing reports Object Operations；Described statement management module, defines and takes out four kinds of basic operations for conventional report capability, including：Newly-built form, loads form, serializes form, printing reports.This four operation operation objects be all report form template base class object, report form template object it is upper be transformed into report form template base class sub-object after, realize operation it is polymorphic.Using WPF interfaces as the unified interface of form, the design effect of form " What You See Is What You Get " is realized.
Description
Technical field
The present invention relates to report form processing technical field, the method and report of more particularly to a kind of use WPF interfaces generation form
Table engine.
Background technology
In WPF programs, usually there are the application scenarios for generating the different forms of a large amount of forms.Current WPF Program Generating forms
Common method have two kinds：One kind is to export to data to generate form in excel；Another generated using third party control
Form.
Data are exported to form is generated in excel, advantage is can easily to change form, but a disadvantage is that modification
Data can not be saved in database, cause the data in the form and database of modification to mismatch, in addition oneself modification form,
Report form statistics data are possible to calculate mistake.
The advantage of form is generated using third party control to print in strict accordance with program setting for printing reports, but a disadvantage is that
Third party control editting function is weak, it is impossible to realize " What You See Is What You Get " of report modification, when form is undesirable, it is necessary to
The modification page is returned to remodify；Another has the disadvantage that what is preserved in database is the data of each field in form, form
Pattern can not preserve.When the report form template in software changes, the report style printed again in software may be with original
There is pattern different.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention provides the method and form of a kind of use WPF interfaces generation form
Engine, the abstract conventional operation of form and Report Server Management, WPF uses this method and engine to create as the software project at interface
Form, achievable form creates and changed the design effect of " What You See Is What You Get ", and realizes that form creates, loads, edits, beats
The functions such as print, statistics are simpler quick.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of use WPF interfaces generate the Report Engine of form, and the structure of Report Engine includes report form template base class, form
Two classes of management module.
Wherein, described report form template base class is inherited in System.Windows.Controls.UserControl classes, is taken out
As the public method of report form template, all report form templates are all inherited in report form template base class.Public method includes：First loading
Operation, loading operation, verification operation, statistical operation, search operation obtains printing reports Object Operations.
Described report form template refers to the form class for creating specific REPORT-OBJECT, and report form template is real for each different form
The distinctive pattern of existing form, operation, report form template need to be implemented separately after inheriting report form template base class, and weigh according to the actual requirements
Write the publicly-owned method of base class.
" very first load operation " in report form template base class, " loading operation ", " verification operation ", " statistical operation " four sides
Method is empty method and method body is short side body of laws, mainly realizes class according to real needs rewrite method by succession base class；
" very first load operation " fills in initialization prompting operation for form content, only in newly-built form for the first time, by Report Server Management
Module is called；" loading operation " is used to load content initialization operation during form, and loading form is all by Report Server Management mould every time
Block is called；" verification operation " is used to judge whether filling report forms content meets filling report forms specification；" statistical operation " is used to count
The form content filled in analysis, and statistic analysis result is included on form or passed to statement management module.
" search operation " in described report form template base class is empty method, for passing through the WPF elements in report form template
Tag label lookups specify WPF controls, and this method can be rewritten by subclass, but one is provided in the method body of this method and is write from memory
That recognizes realizes algorithm, and this realizes that algorithm is a recursive lookup algorithm, realizes that step is as follows：
1) it is null value to set the WPF element controls c to be searched；
2) the tag labels for specifying WPF element controls are searched, if tag values are the value specified, the control is assigned to c,
Lookup terminates；
3) otherwise judge whether the WPF elements control is container, if container, then travel through the child control in container, it is right
Each child control calls " search operation ", if lookup result is not sky, the result of child control is assigned into c；If not
Container, then search and terminate；
4) the WPF element controls to be searched are returned.
" obtaining printing reports Object Operations " in described report form template base class is an empty method, for cloning report
Table, and the control that printing requirement is not met in form is replaced with to the control for meeting printing requirement, this method according to certain form
It can be rewritten by subclass, but a kind of algorithm of realizing of acquiescence is provided in base class, acquiescence realizes that algorithm steps are as follows：
1) using the XamlReader classes in System.Windows.Markup NameSpaces, XamlWriter classes and
XamlDesignerSerializationManager classes by Statement sequence, then unserializing, complete the clone of form；
2) all controls in recursive traversal form, if control is DatePicker, extract the date therein, and use
TextBlock is replaced；If control is CheckBox and RadioButton, option is replaced using TextBlock, and is being chosen
Put in marks " √ " before；If control is ComboBox, the option chosen is replaced with TextBlock；If control is
Button, then hide control.
Wherein, described statement management module, defines and takes out four kinds of basic operations for conventional report capability, wraps
Include：Newly-built form, loads form, serializes form, printing reports.The operation object of this four operations is all report form template base class
Object, the object of report form template it is upper be transformed into report form template base class sub-object after, realize the polymorphic of operation.
" newly-built form " realizes that step is as follows in described statement management module：
1) according to the form for wishing to create, the definition type of corresponding report form template is searched；
2) created using the type reflection technology in .Net and specify the REPORT-OBJECT for defining type form class；
3) empty for showing the form container of form, and REPORT-OBJECT is added in container, for showing；
4) " very first load operation " of REPORT-OBJECT is called；
5) " the loading operation " of REPORT-OBJECT is called；
6) " verification operation " of REPORT-OBJECT is called, judges whether form content fills in correctly；
If 7) form content is filled in correctly, " statistical operation " of REPORT-OBJECT is called, otherwise without statistical operation.
" loading form " realizes that step is as follows in described statement management module：
1) the XAML files specified after Statement sequence are read；
2) using System.Windows.Markup.XamlReader classes parsing XAML files, and it is deserialized as form
The object of type；
3) empty for showing the form container of form, and REPORT-OBJECT is added in container, for showing；
4) " the loading operation " of REPORT-OBJECT is called；
5) " verification operation " of REPORT-OBJECT is called, judges whether form content fills in correctly；
If 6) whether form content fills in correctly, " statistical operation " of REPORT-OBJECT is called, is otherwise grasped without statistics
Make.
" serializing form " realizes that step is as follows in described statement management module：
1) REPORT-OBJECT for needing to serialize is obtained；
2) call REPORT-OBJECT " verification operation " verify form content whether specification, if specification continues executing with next step
Suddenly, otherwise returned content reason lack of standardization, sequencing method terminates；
3) " statistical operation " of REPORT-OBJECT is called；
4) using the XamlWriter classes in System.Windows.Markup NameSpaces and
The object of XamlDesignerSerializationManager classes, REPORT-OBJECT sequence is turned to the character string of XAML types；
5) user of the character string of XAML types to call method is returned.
" printing reports " realizes that step is as follows in described statement management module：
1) REPORT-OBJECT for needing to print is obtained；
2) " verification operation " of REPORT-OBJECT is called if whether specification specification continues executing with next step to checking form content
Suddenly, otherwise returned content reason lack of standardization, Method of printing terminates；
3) " statistical operation " of REPORT-OBJECT is called；
4) " the obtaining printing reports Object Operations " of REPORT-OBJECT is called to obtain the printable objects of former REPORT-OBJECT；
5) the object display printing of the PrintDialog classes in NameSpace System.Windows.Controls is called
Dialog box；If calling success, continue next step, printing of otherwise dishing out is abnormal, and method terminates；
6) System.Windows.Xps.Serialization.XpsSerializationManager types pair are called
Printable objects are switched to XpsDocument type objects by the SaveAsXaml methods of elephant；
7) using in NameSpace System.Windows.Xps.Packaging
The object of IXpsFixedDocumentSequenceReader types and the object of XamlReader types, by XpsDocument
Type object switchs to FlowDocument type objects；
8) the DocumentPaginator attributes of FlowDocument type objects are called to obtain content pagination object, will
Content pagination object passes to the PrintDocument methods of PrintDialog class objects, performs printing.
The method and step for generating report form template using a kind of use WPF interfaces of described Report Engine is as follows：
1) class of UserControl types is created in code IDE, and base class is changed to report form template base
Class, such is report form template class；
2) according to the demand of form, in report form template class, report style is realized using XAML or WPF control objects；
3) according to form demand, the empty method in selection report form template base class is rewritten.
When application program needs generation form, report form template class is passed into statement management module class object, by form
Management module class object is responsible for completing the operations of form.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, method proposed by the present invention using WPF interfaces as form it is newly-built, loading, editor, preserve and printing unified boundary
Face, realizes the design effect of form " What You See Is What You Get ".
2nd, the abstract primary operational of form and Report Server Management of method proposed by the present invention, developer using the present invention,
The quick exploitation of Report form application can be realized with specification form development process.
3rd, method proposed by the present invention uses WPF interfaces as the layout templates of form, and abundant WPF can be used to be laid out
Control, not only facilitates the operation of user, and facilitates developer to carry out the control such as pattern layout and statistics, verification to form
Operation, reduces the study threshold of developer.
4th, method proposed by the present invention, when form is preserved, not only saves the key data of form, can also preserve XAML
The layout pattern of file, i.e. form, after Report layouts' template changes, original Report layouts' pattern will not change, and realize
The complete preservation of report data and report style.
5th, the serializing file after form of the present invention is preserved is XML file, the characteristic with cross-platform cross system, convenient system
The extension of system and the exchange of data.
Brief description of the drawings
Fig. 1 is the Report Engine class figure of the present invention；
Fig. 2 is the search operation flow chart of the present invention；
Fig. 3 is the acquisition printing reports Object Operations flow chart of the present invention；
Fig. 4 is the newly-built form flow chart of the present invention；
Fig. 5 is the loading form flow chart of the present invention；
Fig. 6 is the serializing form flow chart of the present invention；
Fig. 7 is the printing reports flow chart of the present invention；
Fig. 8 is that the use WPF interfaces of the present invention generate the method flow diagram of report form template；
Fig. 9 is the specific embodiment effect " unit in charge of construction's self-appraisal table " of the present invention.
Embodiment
The embodiment provided below in conjunction with accompanying drawing the present invention is described in detail.
As shown in figure 1, a kind of use WPF interfaces generate the Report Engine of form, the structure of Report Engine includes form mould
Plate base class, two classes of statement management module.
Wherein, described report form template base class is inherited in System.Windows.Controls.UserControl classes, is taken out
As the public method of report form template, all report form templates are all inherited in report form template base class.Public method includes：First loading
Operation, loading operation, verification operation, statistical operation, search operation obtains printing reports Object Operations.
Described report form template refers to the form class for realizing specific form, and report form template realizes report for each different form
The distinctive pattern of table, operation, report form template need to be implemented separately after inheriting report form template base class, it is possible to weigh according to the actual requirements
Write the publicly-owned method of base class.
" very first load operation " in report form template base class, " loading operation ", " verification operation ", " statistical operation " four sides
Method is empty method, mainly realizes class according to real needs rewrite method by succession base class, the method body of base class is short side method
Body；" very first load operation " fills in initialization prompting operation for form content, only in newly-built form for the first time, by form pipe
Reason module is called；" loading operation " is used to load content initialization operation during form, and loading form is all by Report Server Management every time
Module is called；" verification operation " is used to judge whether filling report forms content meets filling report forms specification；" statistical operation " is used to unite
The form content that meter and analysis are filled in, and statistic analysis result is included on form or passed to statement management module.
As shown in Fig. 2 " search operation " in described report form template base class is empty method, for by report form template
WPF element tag label lookups specify WPF controls, this method can be rewritten by subclass, but be provided in the method body of this method
One acquiescence realizes algorithm, and this realizes that algorithm is a recursive lookup algorithm, realizes that step is as follows：
1) it is null value to set the WPF element controls c to be searched；
2) the tag labels for specifying WPF element controls are searched, if tag values are the value specified, the control is assigned to c,
Lookup terminates；
3) otherwise judge whether the WPF elements control is container, if container, then travel through the child control in container, it is right
Each child control calls " search operation ", if lookup result is not sky, the result of child control is assigned into c；If not
Container, then search and terminate；
4) the WPF element controls to be searched are returned.
As shown in figure 3, " the obtaining printing reports Object Operations " in described report form template base class is an empty method, use
In clone's form, and the control that printing requirement is not met in form is replaced with to the control for meeting printing requirement according to certain form
Part, this method can be rewritten by subclass, but a kind of operating method of acquiescence is provided in base class, and default action step is as follows：
1) using the XamlReader classes in System.Windows.Markup NameSpaces, XamlWriter classes and
XamlDesignerSerializationManager classes by Statement sequence, then unserializing, complete the clone of form；
2) all controls in recursive traversal form, if control is DatePicker, extract the date therein, and use
TextBlock is replaced；If control is CheckBox and RadioButton, option is replaced using TextBlock, and is being chosen
Put in marks " √ " before；If control is ComboBox, the option chosen is replaced with TextBlock；If control is
Button, then hide control.
Wherein, described statement management module, defines and takes out four kinds of basic operations for conventional report capability, wraps
Include：Newly-built form, loads form, serializes form, printing reports.The operation object of this four operations is all report form template base class
Object, report form template object it is upper be transformed into report form template base class sub-object after, realize operation it is polymorphic.
As shown in figure 4, " newly-built form " realizes that step is as follows in described statement management module：
1) according to the form for wishing to create, the definition type of corresponding report form template is searched；
2) created using the type reflection technology in .Net and specify the REPORT-OBJECT for defining type form class；
3) empty for showing the form container of form, and REPORT-OBJECT is added in container, for showing；
4) " very first load operation " of REPORT-OBJECT is called；
5) " the loading operation " of REPORT-OBJECT is called；
6) " verification operation " of REPORT-OBJECT is called, judges whether form content fills in correctly；
If 7) form content is filled in correctly, " statistical operation " of REPORT-OBJECT is called, otherwise without statistical operation.
As shown in figure 5, " loading form " realizes that step is as follows in described statement management module：
1) the XAML files specified after Statement sequence are read；
2) using System.Windows.Markup.XamlReader classes parsing XAML files, and it is deserialized as form
The object of type；
3) empty for showing the form container of form, and REPORT-OBJECT is added in container, for showing；
4) " the loading operation " of REPORT-OBJECT is called；
5) " verification operation " of REPORT-OBJECT is called, judges whether form content fills in correctly；
If 6) whether form content fills in correctly, " statistical operation " of REPORT-OBJECT is called, is otherwise grasped without statistics
Make.
As shown in fig. 6, " serializing form " realizes that step is as follows in described statement management module：
1) REPORT-OBJECT for needing to serialize is obtained；
2) call REPORT-OBJECT " verification operation " verify form content whether specification, if specification continues executing with next step
Suddenly, otherwise returned content reason lack of standardization, sequencing method terminates；
3) " statistical operation " of REPORT-OBJECT is called；
4) using the XamlWriter classes in System.Windows.Markup NameSpaces and
The object of XamlDesignerSerializationManager classes, REPORT-OBJECT sequence is turned to the character string of XAML types；
5) user of the character string of XAML types to call method is returned.
As shown in fig. 7, " printing reports " realize that step is as follows in described statement management module：
1) REPORT-OBJECT for needing to print is obtained；
2) " verification operation " of REPORT-OBJECT is called if whether specification specification continues executing with next step to checking form content
Suddenly, otherwise returned content reason lack of standardization, Method of printing terminates；
3) " statistical operation " of REPORT-OBJECT is called；
4) " the obtaining printing reports Object Operations " of REPORT-OBJECT is called to obtain the printable objects of former REPORT-OBJECT；
5) the object display printing of the PrintDialog classes in NameSpace System.Windows.Controls is called
Dialog box；If calling success, continue next step, printing of otherwise dishing out is abnormal, and method terminates；
6) System.Windows.Xps.Serialization.XpsSerializationManager types pair are called
Printable objects are switched to XpsDocument type objects by the SaveAsXaml methods of elephant；
7) using in NameSpace System.Windows.Xps.Packaging
The object of IXpsFixedDocumentSequenceReader types and the object of XamlReader types, by XpsDocument
Type object switchs to FlowDocument type objects；
8) the DocumentPaginator attributes of FlowDocument type objects are called to obtain content pagination object, will
Content pagination object passes to the PrintDocument methods of PrintDialog class objects, performs printing.
As shown in figure 8, generating the method and step of report form template class using a kind of use WPF interfaces of described Report Engine
It is as follows：
1) class of UserControl types is created in code IDE, and base class is changed to report form template base
Class, such is report form template class；
2) according to the demand of form, in report form template class, report style is realized using XAML or WPF control objects；
3) according to form demand, the empty method in selection report form template base class is rewritten.
Report form template class is passed into statement management module class object, is responsible for completing form by statement management module class object
Operations.
Specific embodiment 1：By taking the operations of form " unit in charge of construction's self-appraisal table " as an example.The boundary of " unit in charge of construction's self-appraisal table "
Face such as Fig. 9.
The step of newly-built " unit in charge of construction's self-appraisal table " report form template, is as follows：
1) code file of UserControl types is created in code IDE, and base class is changed to form
Template base class.
2) according to the demand of form, report style is realized.Form carries out cutting layout to the page using grid, and is needing
The place of typing information is put into corresponding control.If backstage code needs to call the control, control is inputted in the tag labels of control
The identifier character string of part.Such as construction unit title, partitioned project title place TextBox controls, and process numbering is placed
TextBox controls, identifier is " txtProcessID ", and ComboBox controls are placed by unit in charge of construction, and identifier is
" cmbConstructionUnit ", commencement date place two DatePicker controls, identifier be respectively " dpStart " and
" dpEnd ", represents the beginning and end date.Dominant item check point qualification rate places TextBox controls, and identifier is
" txtMain ", general data point qualification rate places TextBox controls, and identifier is " txtCommon ".Evaluation of engineering quality etc.
TextBlock controls are placed at level, identifier is " tbLevel ".
According to form demand, the empty method in selection base class is rewritten.Rewrite " very first load operation "：Use " search operation "
Identifier " dpStart " and " dpEnd " corresponding control is searched, and is current time set of time.Rewrite " loading operation "：
Use " search operation " to search the corresponding ComboBox controls of identifier " cmbConstructionUnit ", looked for from database
To unit in charge of construction's list, and it is loaded into the drop-down list of ComboBox controls.Rewrite " verification operation "：Search identifier
" txtProcessID ", whether the process numbering of checking input is six bit digitals, if authentication failed, returns to falsity, and point out
Error message；The control of identifier " txtMain " and " txtCommon " is searched, whether the word of checking input is within 0-100
Numeral, if authentication failed, return to falsity, and point out error message；If be proved to be successful, true value is returned.Rewrite " statistics behaviour
Make ":The control of identifier " txtMain " and " txtCommon " is searched, and takes out main project and the qualification rate of general data,
According to the calculation formula transmitted in parameter, calculation process credit rating.Identifier " tbLevel " is searched, and by process quality etc.
Level result is assigned to " tbLevel " control, and rating result is returned as return value.Utilize pair of statement management module class
Step is realized as realize newly-built " unit in charge of construction's self-appraisal table "：
1) type of " unit in charge of construction's self-appraisal table " template is searched.
2) REPORT-OBJECT of " unit in charge of construction's self-appraisal table " template is created using the type reflection technology in .Net.
3) empty for showing the form container of form, and REPORT-OBJECT is added in container, for showing.
4) " very first load operation " of REPORT-OBJECT is called.
5) " the loading operation " of REPORT-OBJECT is called.
6) " verification operation " of REPORT-OBJECT is called, judges whether form content fills in correctly.Due to being first loading, report
Data in table are not filled in, and therefore " verification operation " return value is falsity.
If 7) form content is filled in correctly, " statistical operation " of REPORT-OBJECT is called, otherwise without statistical operation.
Realize that step is as follows using the object implementatio8 unit in charge of construction self-appraisal table " loading form " of statement management module class：
1) the XAML files of the unit in charge of construction's self-appraisal table for the need loading specified are searched.
2) using System.Windows.Markup.XamlReader classes parsing XAML files, and it is deserialized as construction
The object of unit self-appraisal table template type.
3) empty for showing the form container of form, and REPORT-OBJECT is added in container, for showing.
4) " the loading operation " of REPORT-OBJECT is called.
5) " verification operation " of REPORT-OBJECT is called, judges whether form content fills in correctly.
If 6) whether form content fills in correctly, " statistical operation " of REPORT-OBJECT is called, is otherwise grasped without statistics
Make.
" serializing form " realizes step such as in the object implementatio8 unit in charge of construction self-appraisal table of statement management module class
Under：
1) obtaining needs unit in charge of construction's self-appraisal statistical tables and reports table object.
2) call REPORT-OBJECT " verification operation " verify form content whether specification, if specification continues executing with next step
Suddenly, otherwise returned content reason lack of standardization, sequencing method terminates.
3) " statistical operation " of REPORT-OBJECT is called, and passes through the rating of return value acquisition form.
4) using the XamlWriter classes in System.Windows.Markup NameSpaces and
The object of XamlDesignerSerializationManager classes, REPORT-OBJECT sequence is turned to the character string of XAML types.
5) user of the character string of XAML types to call method is returned, serializing is completed.
" printing reports " realizes that step is as follows in the object implementatio8 unit in charge of construction self-appraisal table of statement management module class：
1) unit in charge of construction's self-appraisal statistical tables and reports table object is obtained.
2) call REPORT-OBJECT " verification operation " verify form content whether specification, if specification continues executing with next step
Suddenly, otherwise returned content reason lack of standardization, sequencing method terminates.
3) " statistical operation " of REPORT-OBJECT, calculation process credit rating are called.
4) " the obtaining printing reports Object Operations " of REPORT-OBJECT is called to obtain the printable objects of former REPORT-OBJECT.
In " obtaining printing reports Object Operations ", DatePicker and ComboBox controls are all replaced by TextBlock controls, for beating
Print operation.
5) the object display printing of the PrintDialog classes in NameSpace System.Windows.Controls is called
Dialog box.If calling success, continue next step, printing of otherwise dishing out is abnormal, and method terminates.
6) System.Windows.Xps.Serialization.XpsSerializationManager types pair are called
Printable objects are switched to XpsDocument type objects by the SaveAsXaml methods of elephant.
7) using in NameSpace System.Windows.Xps.Packaging
The object of IXpsFixedDocumentSequenceReader types and the object of XamlReader types, by XpsDocument
Type object switchs to FlowDocument type objects.
8) the DocumentPaginator attributes of FlowDocument type objects are called to obtain content pagination object, will
Content pagination object passes to the PrintDocument methods of PrintDialog class objects, performs printing.
Above example is implemented lower premised on technical solution of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to the above embodiments.Method therefor is such as without spy in above-described embodiment
It is conventional method not mentionlet alone bright.
Claims (8)
1. a kind of use WPF interfaces generate the Report Engine of form, it is characterised in that the structure of Report Engine includes report form template
Base class, two classes of statement management module；
Wherein, described report form template base class is inherited in System.Windows.Controls.UserControl classes, abstract
The public method of report form template, all report form templates are all inherited in report form template base class；Public method includes：First loading behaviour
Make, loading operation, verification operation, statistical operation, search operation obtains printing reports Object Operations；
Described report form template refers to the form class for realizing specific form, and report form template realizes that form is special for each different form
Some patterns, operation, report form template need to be implemented separately after inheriting report form template base class, it is possible to rewrite base according to the actual requirements
The publicly-owned method of class；
" very first load operation " in report form template base class, " loading operation ", " verification operation ", " statistical operation " four methods are equal
For empty method, class is mainly realized according to real needs rewrite method by succession base class, the method body of base class is short side body of laws；
" very first load operation " fills in initialization prompting operation for form content, only in newly-built form for the first time, by Report Server Management
Module is called；" loading operation " is used to load content initialization operation during form, and loading form is all by Report Server Management mould every time
Block is called；" verification operation " is used to judge whether filling report forms content meets filling report forms specification；" statistical operation " is used to count
The form content filled in analysis, and statistic analysis result is included on form or passed to statement management module；
Described statement management module, defines and takes out four kinds of basic operations for conventional report capability, including：Newly-built report
Table, loads form, serializes form, printing reports；The operation object of this four operations is all the object of report form template base class, report
Table template object it is upper be transformed into report form template base class sub-object after, realize operation it is polymorphic.
2. a kind of use WPF interfaces according to claim 1 generate the Report Engine of form, it is characterised in that described
" search operation " in report form template base class is empty method, for being specified by the WPF element tag label lookups in report form template
WPF controls, this method can be rewritten by subclass, but in the method body of this method provide one acquiescence realize algorithm, should
It is a recursive lookup algorithm to realize algorithm, realizes that step is as follows：
1) it is null value to set the WPF element controls c to be searched；
2) the tag labels for specifying WPF element controls are searched, if tag values are the value specified, the control is assigned to c, are searched
Terminate；
3) otherwise judge whether the WPF elements control is container, if container, then the child control in container is traveled through, to each
Individual child control calls " search operation ", if lookup result is not sky, the result of child control is assigned into c；If not container,
Then search and terminate；
4) the WPF element controls to be searched are returned.
3. a kind of use WPF interfaces according to claim 1 generate the Report Engine of form, it is characterised in that described
" obtain printing reports Object Operations " in report form template base class is an empty method, for cloning form, and by form not
The control for meeting printing requirement replaces with the control for meeting printing requirement according to certain form, and this method can be rewritten by subclass,
But a kind of operating method of acquiescence is provided in base class, default action step is as follows：
1) using the XamlReader classes in System.Windows.Markup NameSpaces, XamlWriter classes and
XamlDesignerSerializationManager classes by Statement sequence, then unserializing, complete the clone of form；
2) all controls in recursive traversal form, if control is DatePicker, extract the date therein, and use
TextBlock is replaced；If control is CheckBox and RadioButton, option is replaced using TextBlock, and is being chosen
Put in marks " √ " before；If control is ComboBox, the option chosen is replaced with TextBlock；If control is
Button, then hide control.
4. a kind of use WPF interfaces according to claim 1 generate the Report Engine of form, it is characterised in that described
" newly-built form " realizes that step is as follows in statement management module：
1) according to the form for wishing to create, the definition type of corresponding report form template is searched；
2) created using the type reflection technology in .Net and specify the REPORT-OBJECT for defining type form class；
3) empty for showing the form container of form, and REPORT-OBJECT is added in container, for showing；
4) " very first load operation " of REPORT-OBJECT is called；
5) " the loading operation " of REPORT-OBJECT is called；
6) " verification operation " of REPORT-OBJECT is called, judges whether form content fills in correctly；
If 7) form content is filled in correctly, " statistical operation " of REPORT-OBJECT is called, otherwise without statistical operation.
5. a kind of use WPF interfaces according to claim 1 generate the Report Engine of form, it is characterised in that described
" loading form " realizes that step is as follows in statement management module：
1) the XAML files specified after Statement sequence are read；
2) using System.Windows.Markup.XamlReader classes parsing XAML files, and it is deserialized as report form type
Object；
3) empty for showing the form container of form, and REPORT-OBJECT is added in container, for showing；
4) " the loading operation " of REPORT-OBJECT is called；
5) " verification operation " of REPORT-OBJECT is called, judges whether form content fills in correctly；
If 6) whether form content fills in correctly, " statistical operation " of REPORT-OBJECT is called, otherwise without statistical operation.
6. a kind of use WPF interfaces according to claim 1 generate the Report Engine of form, it is characterised in that described
" serializing form " realizes that step is as follows in statement management module：
1) REPORT-OBJECT for needing to serialize is obtained；
2) call REPORT-OBJECT " verification operation " verify form content whether specification, if specification continues executing with next step,
Otherwise returned content reason lack of standardization, sequencing method terminates；
3) " statistical operation " of REPORT-OBJECT is called；
4) using the XamlWriter classes in System.Windows.Markup NameSpaces and
The object of XamlDesignerSerializationManager classes, REPORT-OBJECT sequence is turned to the character string of XAML types；
5) user of the character string of XAML types to call method is returned.
7. a kind of use WPF interfaces according to claim 1 generate the Report Engine of form, it is characterised in that described
" printing reports " realizes that step is as follows in statement management module：
1) REPORT-OBJECT for needing to print is obtained；
2) " verification operation " of REPORT-OBJECT is called if whether specification specification continues executing with next step to checking form content, it is no
Then returned content reason lack of standardization, Method of printing terminates；
3) " statistical operation " of REPORT-OBJECT is called；
4) " the obtaining printing reports Object Operations " of REPORT-OBJECT is called to obtain the printable objects of former REPORT-OBJECT；
5) object of the PrintDialog classes in NameSpace System.Windows.Controls is called to show print dialog
Frame；If calling success, continue next step, printing of otherwise dishing out is abnormal, and method terminates；
6) System.Windows.Xps.Serialization.XpsSerializationManager type objects are called
Printable objects are switched to XpsDocument type objects by SaveAsXaml methods；
7) using in NameSpace System.Windows.Xps.Packaging
The object of IXpsFixedDocumentSequenceReader types and the object of XamlReader types, by XpsDocument
Type object switchs to FlowDocument type objects；
8) the DocumentPaginator attributes of FlowDocument type objects are called to obtain content pagination object, by content
Paging object passes to the PrintDocument methods of PrintDialog class objects, performs printing.
8. using described Report Engine a kind of use WPF interfaces generate report form template method, it is characterised in that including with
Lower step：
1) class of UserControl types is created in code IDE, and base class is changed to report form template base class, should
Class is report form template class；
2) according to the demand of form, in report form template class, report style is realized using XAML or WPF control objects；
3) according to form demand, the empty method in selection report form template base class is rewritten；
Report form template class is passed into statement management module class object, is responsible for completing each of form by statement management module class object
Item operation.
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