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V24.1

DxTreeList.GetTotalSummaryValue(ITreeListSummaryItem) Method

Gets a total summary item’s value.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.1.dll

NuGet Package: DevExpress.Blazor

Declaration

public object GetTotalSummaryValue(
    ITreeListSummaryItem item
)

Parameters

Name Type Description
item ITreeListSummaryItem

The total summary item.

Returns

Type Description
Object

The total summary value.

Remarks

Specify the DisplayText property or handle the CustomizeSummaryDisplayText event to customize the summary display text.

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.GetTotalSummaryValue(i)</i> <br />
              }
          }
      }
  </ColumnFooterTemplate>
</DxTreeList>

@code {
    List<EmployeeTask> TreeListData { get; set; }

    protected override void OnInitialized() {
        TreeListData = EmployeeTaskService.GenerateData();
    }
}

For more information about summaries in the TreeList component, refer to the following topic: Summary in Blazor TreeList.

See Also