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How to filter special characters like '[', ']', '*', '%' by typing it in dynamic filter in WinForms GridGroupingControl?

Platform: WinForms |
Control: GridGroupingControl |
Published Date: April 19, 2015 |
Last Revised Date: February 14, 2020
Tags: filtering

Special character

By default, the filtering uses an expression that contains the column name like [column name]. Hence, using this [ in filtering expression is possible since the column name is mentioned within [ ] . If you filter in DataGridView using the same, it throws an exception as Error in Like operator: the string pattern ‘George [' is invalid and also the special characters like *, %,] symbols are not considered while applying the dynamic filter.


These special characters can be handled within the square bracket like “[ [ ]” or “[*]” when you type the text in the dynamic filter. The same works for RowFilter too. The following code example explains about RowFilter using the special character ‘[‘.


private void button1_Click(object sender, EventArgs e)
    table.DefaultView.RowFilter="[FirstName] like 'George[[]'";



Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles button1.Click
    table.DefaultView.RowFilter="[FirstName] like 'George[[]'"
End Sub


The following screenshot displays the filtering applied with special characters.

Show filter the special character


In the GridGroupingControl (1st grid), the characters [*] typed in the dynamic filter bar cell to filter the values start with the special character ‘*’.


C#: SpecialCharacter

VB: SpecialCharacter

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