DxTreeList.IsDataItemSelected(Object) Method
Returns whether the row that corresponds to the specified data item is selected.
Namespace: DevExpress.Blazor
Assembly: DevExpress.Blazor.v24.1.dll
NuGet Package: DevExpress.Blazor
Declaration
public bool IsDataItemSelected(
object dataItem
)
Parameters
Name | Type | Description |
---|---|---|
dataItem | Object | The data item. |
Returns
Type | Description |
---|---|
Boolean |
|
Remarks
Call the IsDataItemSelected
method to identify whether the row that corresponds to the specified data item is selected. The IsRowSelected method allows you to check whether the specified row is selected.
@inject EmployeeTaskService EmployeeTaskService
<style>
.my-button {
width: 200px;
}
</style>
<DxTreeList @ref="MyTreeList"
Data="TreeListData"
KeyFieldName="Id"
ParentKeyFieldName="ParentId"
@bind-SelectedDataItems="@SelectedDataItems">
<Columns>
<DxTreeListSelectionColumn />
<DxTreeListDataColumn FieldName="Name" Caption="Task" />
<DxTreeListDataColumn FieldName="EmployeeName" />
<DxTreeListDataColumn FieldName="StartDate" />
<DxTreeListDataColumn FieldName="DueDate" />
</Columns>
</DxTreeList>
<DxButton Text="Is First Row Selected" CssClass="my-button"
Click="() => IsRowSelectedInfo = MyTreeList.IsRowSelected(0)" />
<DxButton Text="Is First Data Item Selected" CssClass="my-button"
Click="() => IsDataItemSelectedInfo = MyTreeList.IsDataItemSelected(TreeListData.First())" />
<div><b>Is First Row Selected</b>: @IsRowSelectedInfo</div>
<div><b>Is First Data Item Selected</b>: @IsDataItemSelectedInfo</div>
@code {
List<EmployeeTask> TreeListData { get; set; }
IReadOnlyList<object> SelectedDataItems { get; set; }
ITreeList MyTreeList { get; set; }
bool IsRowSelectedInfo { get; set; }
bool IsDataItemSelectedInfo { get; set; }
protected override void OnInitialized() {
TreeListData = EmployeeTaskService.GenerateData();
}
}
For more information about selection in the TreeList component, refer to the following topic: Selection and Focus in Blazor TreeList.
See Also