How to add a filter TextBox to the XtraPivotGrid Column Chooser

This example illustrates how to add a field filter text box to the PivotGridControl's Column Chooser window (Customization Form). To achieve this goal, handle the ShowCustomizationForm event. In this event handler, you can get a displayed customization form via the PivotGridControl.CustomizationForm property. Then add a TexbBox control onto this form and handle the TextBox.EditValueChangedevent to hide PivotGridFields which do not meet the entered text via the field.Options.ShowInCustomizationForm property.