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Change the Default Selected Filter Operators

To change the default selected filter operators, you have to attach to the FilterOperatorsLoading event of RadGridView and set them in the event arguments. When in Filter Row mode you only need to set the first operator.

private void OnRadGridViewFilterOperatorsLoading(object sender, Telerik.Windows.Controls.GridView.FilterOperatorsLoadingEventArgs e)
    if (e.Column.UniqueName == "HireDate")
        e.DefaultOperator1 = Telerik.Windows.Data.FilterOperator.IsGreaterThan;
        e.DefaultOperator2 = Telerik.Windows.Data.FilterOperator.IsLessThan;
Private Sub OnRadGridViewFilterOperatorsLoading(sender As Object, e As Telerik.Windows.Controls.GridView.FilterOperatorsLoadingEventArgs)
    If e.Column.UniqueName = "HireDate" Then
        e.DefaultOperator1 = Telerik.Windows.Data.FilterOperator.IsGreaterThan
        e.DefaultOperator2 = Telerik.Windows.Data.FilterOperator.IsLessThan
    End If
End Sub

Please note that you cannot reorder the available operators.

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