Dear Friends,

i have data entry form with datagrid where user input data, But i want to perform some calculation. below appended is my code please help me to solve my problem. In stkremian column i want result of subtracted values given in (stock column - stkused column)

   Private Sub dgridview1()

        Dim stock As New DataGridViewTextBoxColumn()
        stock.HeaderText = ("Total Stock")
        stock.Visible = True
        DataGridView1.Columns.Add(Total Stock)

        Dim stkused As New DataGridViewTextBoxColumn()
        stkused .HeaderText = ("Stock Used")
        stkused .Visible = True
        DataGridView1.Columns.Add(stkused)

        Dim stkremian As New DataGridViewTextBoxColumn()
        stkremian.HeaderText = ("Total Minutes")
        stkremian.Visible = True
        DataGridView1.Columns.Add(stkremian)
end sub