Programatically Grouping

[Master]

Hi, the presentation layer of my reporting model is XML based. The things (data and Formating) are working well except the groups, Unable to display and group data. I have written a ReportVisitor that parse the XML and transform it for the Telerik expected objects. Given Below is the source for Group and the XML.

public override void VisitGroup(Group element)
        {
            Telerik.Reporting.Group HeaderGroup = new Telerik.Reporting.Group(); 
            Telerik.Reporting.GroupHeaderSection HeaderGroupSection = new GroupHeaderSection();
            Telerik.Reporting.GroupFooterSection FooterGroupSection = new GroupFooterSection();
           
            HeaderGroup.GroupHeader= HeaderGroupSection ;
            HeaderGroup.GroupFooter = FooterGroupSection ;
            HeaderGroup.Grouping.AddRange(new Telerik.Reporting.Data.Grouping[] {new Telerik.Reporting.Data.Grouping("=Fields.[" + element.Column + "]")});
            this.currentContainer.Report.Groups.Add(HeaderGroup);           
            this.currentContainer = HeaderGroupSection;
           
            element.Header.Accept(this);
           
            if (HeaderGroupSection != null)
                {
                    CalculateMaxHeight(HeaderGroupSection);
                    HeaderGroupSection.PrintOnEveryPage = true;
                    HeaderGroupSection.KeepTogether = true;
                    HeaderGroupSection.PageBreak = PageBreak.None;
                }

            this.currentContainer = FooterGroupSection;
            element.Footer.Accept(this);
           
            if (FooterGroupSection != null)
                {
                    CalculateMaxHeight(FooterGroupSection);
                    FooterGroupSection.KeepTogether = true;
                    FooterGroupSection.PageBreak = PageBreak.None;
               
                }

            this.currentContainer = this.currentContainer.Report;
}

------------------------------------------------------------

 <group level="1" column="Email" newpage="true">
          <groupHeader width="5000" height="70">
            <boundField id="boundField#" datafield="Email" left="0" top="2" width="300" height="30" wrap="false" formatString="" textalign="left" cssclass="GroupTitle" borderwidth="" borderstyle="" bordercolor="black"/>
            <label id="label#" text="Some Heading" left="0" top="32" width="35" height="21" wrap="true" formatString="" textalign="left" cssclass="Header" borderwidth="" borderstyle="" bordercolor="" fontfamily="Arial" fontsize="11px" fontweight="bold"/>
          </groupHeader>
          <groupFooter width="950" height="35">
            <runningTotal text="Count" expression="count(property)" datatype="System.Int" reset="true" resetvalue="0" left="370" top="5" width="100" height="21" wrap="false" formatString="{0:N0}" textalign="right" cssclass="GroupTitle" borderwidth="" borderstyle="" bordercolor="" />
          </groupFooter>
        </group>

[Svetoslav]

Hi,

Looking at your code, the only thing I noticed is that you never add the GroupHeader/FooterSections to the report's Items collection. Adding one Group to the Report.Groups collection just sets the grouping criteria for the current report but you have to "register" the group sections as well.

Here is a sample:

// register group1
this.Groups.AddRange(new Telerik.Reporting.Group[] {
            this.group1});

// register the report sections including the two group1's sections
this.Items.AddRange(new Telerik.Reporting.ReportItemBase[] {
            this.groupHeaderSection1,
            this.groupFooterSection1,
            this.pageHeader,
            this.detail});

Please note that the order of adding sections to the Report.Items collection usually doesn't matter.

In case you are still having troubles with the groups, the first thing you can do is to try creating a similar report with the Report Designer inside Visual Studio and examine the code that the designer has generated. This is the InitializeComponent() method that usually resides in the designer source file (ex.: MyReport1.Designer.cs).

Kind regards,
Svetoslav
the Telerik team

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