Change the Default Selected Filter Operators

To change the default selected filter operators, you have to handle the FilterOperatorsLoading event of RadGridView and set them in the event arguments. When the FilteringMode is FilterRow, you only need to set the first operator.

C#

	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;
	    }
	}

VB.NET

	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.