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V25.1
  • TreeListColumnFooterTemplateContext Class

    Stores information about a footer cell in the TreeList and is passed as the context parameter to the DxTreeList.ColumnFooterTemplate and DxTreeListColumn.FooterTemplate.

    Namespace: DevExpress.Blazor

    Assembly: DevExpress.Blazor.v25.1.dll

    NuGet Package: DevExpress.Blazor

    Declaration

    public class TreeListColumnFooterTemplateContext :
        GridColumnFooterTemplateContextBase

    Remarks

    The DxTreeList.ColumnFooterTemplate and DxTreeListColumn.FooterTemplate accept a TreeListColumnFooterTemplateContext object as the context parameter. You can use the parameter’s members to get information about the current footer cell.

    The following code snippet applies italic formatting to all summary values:

    @inject EmployeeTaskService EmployeeTaskService
    
    <DxTreeList Data="TreeListData" KeyFieldName="Id" ParentKeyFieldName="ParentId">
        <Columns>
            <DxTreeListDataColumn FieldName="Name" Caption="Task" />
            <DxTreeListDataColumn FieldName="EmployeeName" />
            <DxTreeListDataColumn FieldName="StartDate" />
            <DxTreeListDataColumn FieldName="DueDate" />
            <DxTreeListDataColumn FieldName="Status" Caption="Progress" DisplayFormat="p0" />
        </Columns>
        <TotalSummary>
            <DxTreeListSummaryItem SummaryType="TreeListSummaryItemType.Count" FieldName="Name" />
            <DxTreeListSummaryItem SummaryType="TreeListSummaryItemType.Min" FieldName="DueDate" ValueDisplayFormat="y" />
            <DxTreeListSummaryItem SummaryType="TreeListSummaryItemType.Max" FieldName="DueDate" ValueDisplayFormat="y" />
            <DxTreeListSummaryItem SummaryType="TreeListSummaryItemType.Avg" FieldName="Status" />
        </TotalSummary>
        <ColumnFooterTemplate>
          @{
              var summaryItems = context.SummaryItems;
              if (summaryItems.Any()) {
                  foreach (var i in summaryItems) {
                      @context.TreeList.GetTotalSummaryLabel(i)
                      <text>: </text>
                      <i>@context.TreeList.GetTotalSummaryFormattedValue(i)</i> <br />
                  }
              }
          }
      </ColumnFooterTemplate>
    </DxTreeList>
    
    @code {
        List<EmployeeTask> TreeListData { get; set; }
    
        protected override void OnInitialized() {
            TreeListData = EmployeeTaskService.GenerateData();
        }
    }
    

    Blazor TreeList Summary Template

    Inheritance

    Object
    DevExpress.Blazor.Internal.GridTemplateContextBase
    DevExpress.Blazor.Internal.GridColumnFooterTemplateContextBase
    TreeListColumnFooterTemplateContext
    See Also