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V24.2

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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.v24.2.dll

NuGet Package: DevExpress.Blazor

#Declaration

C#
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