Question

I have a datagrid in which i have combobox in a column. On a particular event i want to populate the combo box with result of the query. I wrote this code

string materialQuery = "Select material_name from tbl_material_master where material_id =" + int.Parse(mat_id);
            cmd1 = new SqlCommand(materialQuery, con);
            sdr = cmd1.ExecuteReader();
            if (sdr.HasRows)
            {
                while (sdr.Read())
                {
                    materialName = sdr["material_name"].ToString();
                    grdPurchase.Rows[0].Cells[2] = materialName.ToString();
                }
            }

But it gives error
How do i fix this?

Answer 1

Assuming no data errors, try adding the items to the Items collection of the ComboBox:

DataGridViewComboBoxCell cell;
cell = (DataGridViewComboBoxCell)grdPurchase.Rows[0].Cells[2];
cell.Items.Add(materialName);