datagridview有数据不显示 SqlConnection conn = new SqlConnection("Data Source=localhost;Initial Catalog=XL_Meter;Integrated Security=SSPI;"); SqlDataAdapter da1 = new SqlDataAdapter("SELECT muser.ID,muser.Name,muser.State,muser.Plan_Count,mui.Price FROM M_User muser,M_UserIdentity mui where muser.Name=mui.Name and mui.Name=zhu"+conn); DataTable ds = new DataTable(); da1.Fill(ds); dataGridView1.DataSource = ds;