Question

I have two columns in dataGrid view :

Price
Amount 

and a third column

total

how can I make when the value of Price and Amount changes the value of total field change automatically?

Answer 1

Use this way in Win app grid :

private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
    if(e.ColumnIndex == 0 || e.ColumnIndex == 1)
         this.dataGridView1.Rows[e.RowIndex].Cells[2].Value = System.Convert.ToInt32(this.dataGridView1.Rows[e.RowIndex].Cells[0].Value) * System.Convert.ToInt32(this.dataGridView1.Rows[e.RowIndex].Cells[1].Value);
}