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DxGrid.SelectDataItem(Object, Boolean) Method

Selects or deselects a row that corresponds to the specified data item.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.2.dll

NuGet Package: DevExpress.Blazor

#Declaration

C#
public void SelectDataItem(
    object dataItem,
    bool selected = true
)

#Parameters

Name Type Description
dataItem Object

The data item.

#Optional Parameters

Name Type Default Description
selected Boolean True

true to select the row; false to deselect the row.

#Remarks

The following methods allow you to manage Grid selection:

Call the SelectDataItem method and pass a data item as the parameter to select the corresponding row. The method’s behavior depends on the SelectionMode property value:

To deselect a row and its corresponding data item, do any of the following:

  • Call the DeselectDataItem method.
  • Call the SelectDataItem method and pass false as the second parameter.

The following example selects and deselects a row that corresponds to the first data item:

@using Microsoft.EntityFrameworkCore
@inject IDbContextFactory<NorthwindContext> NorthwindContextFactory
@implements IDisposable

<DxGrid Data="GridDataSource"
        AllowSelectRowByClick="true"
        @bind-SelectedDataItems="@SelectedDataItems"
        KeyFieldName="ProductId"
        @ref="MyGrid">
    <Columns>
        <DxGridDataColumn FieldName="ProductName" />
        <DxGridDataColumn FieldName="UnitPrice" />
        <DxGridDataColumn FieldName="QuantityPerUnit" />
        <DxGridDataColumn FieldName="UnitsInStock" />
    </Columns>
</DxGrid>
<br />

<DxButton Click="() => MyGrid.SelectDataItem(GridDataSource.First())">Select First Data Item</DxButton>
<DxButton Click="() => MyGrid.DeselectDataItem(GridDataSource.First())">Deselect First Data Item</DxButton>

@code {
    IEnumerable<object> GridDataSource { get; set; }
    NorthwindContext Northwind { get; set; }
    IReadOnlyList<object> SelectedDataItems { get; set; }
    IGrid MyGrid { get; set; }

    protected override void OnInitialized() {
        Northwind = NorthwindContextFactory.CreateDbContext();
        GridDataSource = Northwind.Products
            .ToList();
        SelectedDataItems = GridDataSource.Skip(1).Take(2).ToList();
    }

    public void Dispose() {
        Northwind?.Dispose();
    }
}

Run Demo: Data Grid - Selection API

For more information about selection in the Grid component, refer to the following topic: Selection and Focus in Blazor Grid.

See Also