GridDataColumnSettings.AllowHeaderFilter Property

Gets or sets whether the filter button is displayed within the current column’s (row’s for ASPxVerticalGrid) header.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v21.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

[DefaultValue(DefaultBoolean.Default)]
public DefaultBoolean AllowHeaderFilter { get; set; }

VB.NET

<DefaultValue(DefaultBoolean.Default)>
Public Property AllowHeaderFilter As DefaultBoolean

Property Value

Type	Default	Description
DefaultBoolean	Default	One of the DefaultBoolean enumeration values.

Available values:

Name	Description
True	true. DefaultBoolean.True has a constant value of 0, while the standard true value corresponds to a value of 1. In Visual Basic, do not use implicit conversion of Boolean values to DefaultBoolean, and vice versa, as the conversion may produce incorrect results.
False	false. DefaultBoolean.False has a constant value of 1, while the standard false value corresponds to a value of 0. In Visual Basic, do not use implicit conversion of Boolean values to DefaultBoolean, and vice versa, as the conversion may produce incorrect results.
Default	The default behavior determined by the control’s logic.

Remarks

If the AllowHeaderFilter property is set to Default, the filter button’s visibility is controlled by the control’s ASPxGridSettings.ShowHeaderFilterButton option.

Example

The following example illustrates how to use the AllowHeaderFilter property.

Web Forms approach:

Note

For a full example, see the ASPxGridView - Customization Dialog demo.

ASPX

<dx:ASPxGridView ID="Grid" runat="server" DataSourceID="ProductsDataSource" 
    EnableRowsCache="false" Width="100%">
    <Columns>
        <dx:GridViewDataTextColumn FieldName="ProductName">
            <Settings AutoFilterCondition="Contains" />
        </dx:GridViewDataTextColumn>
        <dx:GridViewDataComboBoxColumn FieldName="CategoryID" Caption="Category Name" SortIndex="0" SortOrder="Ascending" AdaptivePriority="1">
            <PropertiesComboBox DataSourceID="CategoriesDataSource" ValueField="CategoryID" TextField="CategoryName" ValueType="System.Int32" />
            <Settings AllowHeaderFilter="True" AllowAutoFilter="False" SortMode="DisplayText" />
            <SettingsHeaderFilter Mode="CheckedList" />
        </dx:GridViewDataComboBoxColumn>
        ...
    </Columns>
</dx:ASPxGridView>

MVC approach:

Note

For a full example, see the GridView - Customization Dialog demo.

Razor

@Html.DevExpress().GridView(settings => {
    settings.Name = "GridView";
    settings.SettingsCustomizationDialog.Enabled = true;
    ...
    settings.Columns.Add(c => {
        c.FieldName = "ProductName";
        c.Settings.AutoFilterCondition = AutoFilterCondition.Contains;
    });
    settings.Columns.Add(c => {
        c.FieldName = "CategoryID";
        c.Caption = "Category Name";
        c.SortIndex = 0;
        c.SortOrder = DevExpress.Data.ColumnSortOrder.Ascending;
        c.AdaptivePriority = 1;
        c.Settings.AllowHeaderFilter = DefaultBoolean.True;
        c.Settings.AllowAutoFilter = DefaultBoolean.False;
        c.Settings.SortMode = DevExpress.XtraGrid.ColumnSortMode.DisplayText;
        c.SettingsHeaderFilter.Mode = GridHeaderFilterMode.CheckedList;
        c.EditorProperties().ComboBox(cb => {
            cb.DataSource = NorthwindDataProvider.GetCategories();
            cb.TextField = "CategoryName";
            cb.ValueField = "CategoryID";
            cb.ValueType = typeof(int);
        });
    });
}).Bind(Model).GetHtml()