Dgv set maxlength & upper

Set maxlength  in dgv

private void dgv_CellEnter(object sender, DataGridViewCellEventArgs e) {     ((DataGridViewTextBoxColumn)dgv.Columns["material_code"]).MaxInputLength = 4; }      

Set font upper in dgv

private void dgv_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e) {    if (this.dgv.CurrentCell.ColumnIndex == dgv.Columns["material_code"].Index)    {        TextBox prodCode = e.Control as TextBox;        prodCode.CharacterCasing = CharacterCasing.Upper;     } }