Asp.net Gridview未显示

这是我的代码，但gridview没有显示

vb

Public Sub GridViewBind()
        Dim cmd As New SqlCommand("select * from Evaluation", con)
        Dim da As New SqlDataAdapter(cmd)
        Dim ds As New DataSet()
        da.Fill(ds, "Evaluation")
        GridView1.DataSource = ds.Tables("Evaluation")
        GridView1.DataBind()
    End Sub

    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Me.GridViewBind()
    End Sub End Class

ASPX

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns = "true"> </asp:GridView> <asp:Button ID="Button1" runat="server" Text="Button" />

ds.Tables（“Evaluation”）您在这里得到行和列了吗？？？是的，我有列，但它没有显示在gridview中。@Abigail您在Evaluation table中有记录吗？@Vikash是的，我在Evaluation table中有记录。@Abigail然后用调试器检查代码。这应该会有帮助。：）