Gridview显示

Question

我不知道它是什么，但我有这种gridview的各种问题。下面是代码，但问题是网格不显示。可见性设置为true，查询确实返回结果。所以我要求另一组眼睛指出这里出了什么问题。

谢谢

 protected void btnDisplay_Click(object sender, EventArgs e) 
    { 
     string connString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=H:\levels.mdb"; 
     DataSet ds; 
     using (OleDbConnection myConnString = new OleDbConnection()) 
     { 
      myConnString.ConnectionString = connString; 
      using (OleDbCommand selectCommand = new OleDbCommand()) 
      { 
       selectCommand.CommandText = "select * from tblTest"; 
       selectCommand.Connection = myConnString; 
       myConnString.Open(); 
       using(OleDbDataAdapter da = new OleDbDataAdapter()) 
       { 
        da.SelectCommand = selectCommand; 
        ds = new DataSet(); 
        da.Fill(ds, "test"); 

        GridView1.DataSource = ds; 
        GridView1.DataBind(); 
       }      
      }     
     }    
    }//end click event 

，并在GridView

 <asp:GridView ID="GridView1" runat="server"> 
    </asp:GridView> 

Answer 1

数据源应该是：

GridView1.DataSource = ds.Tables["test"]; 
GridView1.DataBind(); 

Answer 2

或

GridView1.DataSource = ds.Tables[0]; 
GridView1.DataBind();