Create a custom ASPxGridView filter insensitive to the number of spaces and punctuation

This example shows how to apply a custom filter to the text in the Auto Filter Row editor.

When the ASPxGridView.ProcessColumnAutoFilter event is raised before the filter criterion is applied, we parse the ASPxGridView.FilterExpression and take only a custom filter for the current column using the FindAndRemoveCustomOperator function.

In the MergeCriterias function, we make a custom criterion and then apply it.

When the AutoFilterCellEditorInitialize event is raised, we get a custom filter for a certain column from the FindAndRemoveCustomOperator function and pass it to the Auto Filter Row editor.

See also:
How to register a custom filter function and use it in ASPxGridView