How to: Perform Custom Filtering When the (Custom) Item is Selected in the Filter Dropdown

• Nov 13, 2018

The following sample code implements custom filtering and disables the Custom Filter Dialog dialog for the UnitPrice column.

When a (Custom) item is selected in the filter dropdown a custom filter criteria will be created and applied to the View. These criteria select records which contain values less than 10 or greater than 30 in the “UnitPrice” column.

C#

using DevExpress.XtraGrid.Views.Grid;
using DevExpress.XtraGrid.Columns;

private void gridView1_CustomFilterDialog(object sender, CustomFilterDialogEventArgs e) {
      if (e.Column.FieldName == "UnitPrice") {
         e.FilterInfo = new ColumnFilterInfo(
           ColumnFilterType.Custom, null, "[UnitPrice] < 10 Or [UnitPrice] > 30", 
           "[Unit Price] < '10' Or [Unit Price] > '30'");
         e.Handled = true;
      }
}

VB.NET

Imports DevExpress.XtraGrid.Views.Grid
Imports DevExpress.XtraGrid.Columns

Private Sub GridView1_CustomFilterDialog(ByVal sender As System.Object, _
  ByVal e As CustomFilterDialogEventArgs) Handles GridView1.CustomFilterDialog
      If e.Column.FieldName = "UnitPrice" Then
         e.FilterInfo = New ColumnFilterInfo( _
           ColumnFilterType.Custom, Nothing, "[UnitPrice] < 10 Or [UnitPrice] > 30", _
           "[Unit Price] < '10' Or [Unit Price] > '30'")
         e.Handled = True
      End If
End Sub