Gridview显示

Question

我不知道它是什么，但我对这个gridview有各种各样的问题。下面是代码，但问题是网格没有显示。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

和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();