從不同的表填充Datagridview c＃

Question

我嘗試從2個不同的表中填充datagridview，它是nonMember和下面的代碼的客戶...但datagridview不顯示除灰色背景之外的任何內容。

using (SqlConnection connection = new SqlConnection(ConnectionString)) 
     using (SqlCommand cmd = connection.CreateCommand()) 
     { 
      connection.Open(); 
      cmd.CommandText = "@SELECT tbl_nonMember.*, tbl_customer.customerID AS Expr1, tbl_customer.lname, tbl_customer.fname, tbl_customer.mname, tbl_customer.gender, tbl_customer.age, tbl_customer.membership_type FROM tbl_customer INNER JOIN tbl_nonMember ON tbl_customer.customerID = tbl_nonMember.customerID"; 
      SqlDataAdapter adap = new SqlDataAdapter(cmd); 
      DataSet ds = new DataSet(); 
      adap.Fill(ds); 
      dataGridView2.DataSource = ds.Tables[0].DefaultView; 
     } 

Answer 1

在設置dataGridView2的數據源之前，嘗試將此添加到您的方法中。

dataGridView2.AutoGenerateColumns = true; 

而你的選擇查詢不應該在關鍵字SELECT的前面有@。它應該是：

cmd.CommandText = "SELECT tbl_nonMember.*, tbl_customer.customerID AS Expr1, tbl_customer.lname, tbl_customer.fname, tbl_customer.mname, tbl_customer.gender, tbl_customer.age, tbl_customer.membership_type FROM tbl_customer INNER JOIN tbl_nonMember ON tbl_customer.customerID = tbl_nonMember.customerID"; 

所以我冒昧地猜測，自動生成後，你的專欄，你的表[0]沒有回，因爲無效的選擇條款的任何行。