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V25.1
  • DxTreeList.ShowAllRowsChanged Event

    Fires when the ShowAllRows property value changes.

    Namespace: DevExpress.Blazor

    Assembly: DevExpress.Blazor.v25.1.dll

    NuGet Package: DevExpress.Blazor

    Declaration

    [Parameter]
    public EventCallback<bool> ShowAllRowsChanged { get; set; }

    Parameters

    Type Description
    Boolean

    The new ShowAllRows property value.

    Remarks

    Enable the ShowAllRows option to display all TreeList rows on one page. Note that if the TreeList contains a large amount of data rows, this option can affect TreeList performance.

    Handle the ShowAllRowsChanged event to react when the ShowAllRows property value changes.

    @inject EmployeeTaskService EmployeeTaskService
    
    <DxTreeList Data="TreeListData"
                KeyFieldName="Id"
                ParentKeyFieldName="ParentId"
                ShowAllRowsChanged=@OnShowAllRowsChanged
                PageSizeSelectorVisible="true"
                PageSizeSelectorAllRowsItemVisible="true"
                PageSizeSelectorItems="@(new int[] {3,4,5})"
                @bind-PageSize=@PageSize>
        <Columns>
            <DxTreeListDataColumn FieldName="Name" Caption="Task" />
            <DxTreeListDataColumn FieldName="EmployeeName" />
            <DxTreeListDataColumn FieldName="StartDate" />
            <DxTreeListDataColumn FieldName="DueDate" />
        </Columns>
    </DxTreeList>
    
    @Message
    
    @code {
        List<EmployeeTask> TreeListData { get; set; }
        string Message { get; set; }
        int PageSize = 3;
        void OnShowAllRowsChanged(bool AllRows) {
            if (AllRows)
                Message = "All rows are visible";
            else
                Message = "Not all rows are visible";
        }
        protected override void OnInitialized() {
            TreeListData = EmployeeTaskService.GenerateData();
        }
    }
    

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

    See Also