DxTreeList.DataColumnFilterMenuTemplate Property

Specifies a common template used to display all column filter menus.

Assembly : DevExpress.Blazor.v25.2.dll

Declaration

csharp

[Parameter]
public RenderFragment<TreeListDataColumnFilterMenuTemplateContext> DataColumnFilterMenuTemplate { get; set; }

Property Value

Type	Description
RenderFragment<TreeListDataColumnFilterMenuTemplateContext>

The template content.

Remarks

Specify the DataColumnFilterMenuTemplate to define a common template for all drop-down filter menus in TreeList column headers.

The template accepts a TreeListDataColumnFilterMenuTemplateContext object as the context parameter. This parameter allows you to do the following:

Specify the filter criteria the filter menu applies to the data column (the FilterCriteria property).
Obtain a list of default filter menu items (the GetDataItemsAsync() method).
Choose the view type for DateTime and DateTime? values (ListView and HierarchicalDateView properties).

Note

The GetDataItemsAsync() method cannot obtain unique values from a column whose data items do not implement IComparable type. If you call the method for such a column, an error may occur.

razor

<DxTreeList Data="Data"
            KeyFieldName="Id"
            ParentKeyFieldName="ParentId"
            FilterMenuButtonDisplayMode="TreeListFilterMenuButtonDisplayMode.Always"
            CssClass="max-h-480">
    <DataColumnFilterMenuTemplate>
        @* Put your content here *@
    </DataColumnFilterMenuTemplate>
    <Columns>
        <DxTreeListDataColumn FieldName="Name" Caption="Task" />
        <DxTreeListDataColumn FieldName="EmployeeName" Caption="Assigned To" TextAlignment="TreeListTextAlignment.Left" />
        <DxTreeListDataColumn FieldName="StartDate" Width="150px" />
        <DxTreeListDataColumn FieldName="DueDate" Width="150px" />
    </Columns>
</DxTreeList>

To define a template for an individual data column, use the column’s DxTreeListDataColumn.FilterMenuTemplate property. For additional information about templates in the TreeList component, refer to the following topic: Templates in Blazor TreeList.

Implements

DataColumnFilterMenuTemplate