SqlConnection con = new SqlConnection(@"Some Connection String");
SqlDataAdapter da = new SqlDataAdapter("ParaEmp_Select",con);
da.SelectCommand.CommandType = CommandType.StoredProcedure;
da.SelectCommand.Parameters.Add("@Contactid", SqlDbType.Int).Value = 123;
DataTable dt = new DataTable();
da.Fill(dt);
dataGridView1.DataSource = dt;