How to create Cobmox with selected values in Gridview in C# Windows based.

public void setcombo() { DataTable dt = new DataTable(); DataColumn dc1 = new DataColumn("ID"); DataColumn dc2 = new DataColumn("Name"); dt.Columns.Add(dc1); dt.Columns.Add(dc2); dt.Rows.Add(1, "name1"); dt.Rows.Add(2, "name2"); DataGridViewComboBoxColumn c1 = new DataGridViewComboBoxColumn(); c1.DataSource = dt; c1.DisplayMember = "Name"; c1.ValueMember = "ID"; for (int i = 0; i < dt.Rows.Count; i++) { if (dt.Rows[i]["ID"].ToString() == "2")//set the default value based on value member ID { c1.DefaultCellStyle.NullValue = dt.Rows[i]["Name"]; } } dataGridView1.Columns.Add(c1); }