Also below is my code:
case SAPbouiCOM.BoEventTypes.et_COMBO_SELECT:
switch (pVal.ItemUID)
{
case "ED_NC_Mat":
{
SAPbouiCOM.Form frm = Globals.oApplication.SBO_Application.Forms.Item(pVal.FormUID);
frm.Freeze(true);
oMatrix = (SAPbouiCOM.Matrix)frm.Items.Item("ED_NC_Mat").Specific;
for (int i = 1; i <= oMatrix.RowCount; i++)
{
SAPbouiCOM.ComboBox oCombo = (SAPbouiCOM.ComboBox)oMatrix.Columns.Item("NC_Reason").Cells.Item(i).Specific;
oCombo.Select("Value", SAPbouiCOM.BoSearchKey.psk_ByValue);
}
frm.Freeze(false);
}break;
}break;