2. How to limit keypress on datagridview only character abcde and convert to uppercase at vb.net? If DataGridView1.CurrentCell.ColumnIndex = 3 Then. AddHandler CType(e.Control, TextBox).KeyPress, AddressOf TextBoxabcde_keyPress. End If. If Not Char.IsControl(e.KeyChar) And Not Char.IsLetter(e.KeyChar) And e.KeyChar "." Then. e.Handled = True ... More @Wikipedia
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