DxTreeListSummaryItem.Visible Property

Specifies whether a summary item is visible.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.1.dll

NuGet Package: DevExpress.Blazor

Declaration

[DefaultValue(true)]
[Parameter]
public bool Visible { get; set; }

Property Value

Type	Default	Description
Boolean	true	true if the summary item is visible; otherwise, false.

Remarks

Use this property to show or hide individual summary items in code.

If you set an item’s Visible property to false, this item is removed from the TreeListColumnFooterTemplateContext.SummaryItems collection.

The following code snippet displays a total summary value above the TreeList component:

<h3>Total Sales: @SummaryText</h3>
<DxTreeList @ref="TreeList"
            Data="Data"
            KeyFieldName="ID"
            ParentKeyFieldName="RegionID"
            ShowAllRows="true">
    <Columns>
        <DxTreeListDataColumn FieldName="Region" />
        <DxTreeListDataColumn FieldName="MarchSales" DisplayFormat="c0" />
        <DxTreeListDataColumn FieldName="MarchChange" DisplayFormat="p2" />
        <DxTreeListDataColumn FieldName="MarketShare" DisplayFormat="p0" />
    </Columns>
    <TotalSummary>
        <DxTreeListSummaryItem SummaryType="TreeListSummaryItemType.Sum" FieldName="MarchSales" Visible="false" />
    </TotalSummary>
</DxTreeList>

@code {
    ITreeList TreeList { get; set; }
    object Data { get; set; }
    string SummaryText;

    protected override void OnInitialized() {
        Data = SalesByRegionDataProvider.GenerateData();
    }

    protected override void OnAfterRender(bool firstRender) {
        if(firstRender) {
            SummaryText = TreeList.GetTotalSummaryFormattedValue(TreeList.GetTotalSummaryItems()[0]);
            StateHasChanged();
        }
    }
}

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

Implements

Visible

Visible