winforms datagridview calculated field change event

Question

I have a datagridview bound from a datatable. I have a calculated column linetotal that multiples unitprice * quantity.

I also have a totalprice label,that I would

Answer 1

Every time you need to refresh the calculated data column, just use again the assignement of expresion. It works for me.

dt.Columns["Linetotal"].Expression = "[unitprice] * [quantity]"

verbi gratia in my code

private void malla18_Mask_Validated(object sender, EventArgs e)
{
  analisis_Tabla_Lote.Columns["SUMA_MALLAS"].Expression = "100 - (Malla12 + Malla14 + Malla15 + Malla16 + Malla17 + Malla18 )";
  analisis_BindingSource.ResetBindings(false);
}

That's all you need!