Gridview只停留在第一页

Question

这是一个包含一个文本框，一个按钮和一个限制为10行的gridview的表单，很好。 当程序运行时，在文本框上键入内容，单击按钮，中提琴显示10行和7页。 当我点击第2页或第3页或第4页时......网格视图保持不变。

如果在单击第2页然后单击按钮后，Gridview将显示正确的信息。其他页面也是如此。

为什么说到Render，Gridview1没有任何行？

    Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)
        Dim i = 0
        While (i < GridView1.Rows.Count)
            ClientScript.RegisterForEventValidation(GridView1.UniqueID, "select$" + i.ToString())
            i += 1
        End While
        MyBase.Render(writer)
    End Sub

    Protected Sub gridview1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)
        Dim rowID As String = "row" + e.Row.RowIndex.ToString
        If e.Row.RowType = DataControlRowType.DataRow Then
            e.Row.Attributes.Add("id", rowID)
            e.Row.Attributes.Add("onclick", "highlightRow('" & rowID & "','" & e.Row.CssClass & "');" + ClientScript.GetPostBackClientHyperlink(Me.GridView1, "select$" + e.Row.RowIndex.ToString()))
            If (e.Row.RowState = DataControlRowState.Alternate) Then
                e.Row.CssClass = "alternate"
            Else
                e.Row.CssClass = "normal"
            End If
        End If
    End Sub


Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    TextBox1.Attributes.Add("onkeyup", "searching()")
    TextBox1.Focus()
End Sub

我相信我遗漏了一些非常基本的东西，但我不知道它是什么。 我一点帮忙？

感谢您的关注。

这是html ...

<asp:GridView ID="GridView1"
    runat="server" AllowPaging="True"
    OnPageIndexChanging="gv1_pageindexchanging"
    AutoGenerateColumns="False"
    DataSourceID="SqlDataSource1"
    HeaderStyle-CssClass="titulo"
    OnRowDataBound="gridview1_RowDataBound"
    OnSelectedIndexChanged="gridview1_selectedindexchanged"
    CssClass="gridview1"
    SelectedIndex="0">
    <Columns>
        <asp:BoundField DataField="tipo"
            HeaderText="tipo"
            SortExpression="tipo" />
        <asp:BoundField DataField="begyear"
            HeaderText="begyear"
            SortExpression="begyear" />
        <asp:BoundField DataField="endyear"
            HeaderText="endyear"
            SortExpression="endyear" />
        <asp:BoundField DataField="marker"
            HeaderText="marker"
            SortExpression="marker" />
        <asp:BoundField DataField="mtl"
            HeaderText="mtl"
            SortExpression="mtl" />
        <asp:BoundField DataField="desc"
            HeaderText="desc"
            SortExpression="desc" />
        <asp:BoundField DataField="yards"
            HeaderText="yards"
            SortExpression="yards" />
        <asp:BoundField DataField="model"
            HeaderText="model"
            SortExpression="model" />
        <asp:BoundField DataField="style"
            HeaderText="style"
            SortExpression="style" />
        <asp:BoundField DataField="drive"
            HeaderText="drive"
            SortExpression="drive" />
        <asp:BoundField DataField="notes"
            HeaderText="notes"
            SortExpression="notes" />
        <asp:BoundField DataField="F12"
            HeaderText="F12"
            SortExpression="F12" />
        <asp:BoundField DataField="F13"
            HeaderText="F13"
            SortExpression="F13" />
    </Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1"
    runat="server" ConnectionString="<%$ ConnectionStrings:carpetsdbConnectionString %>">
</asp:SqlDataSource>
<asp:ScriptManager ID="ScriptManager1"
    runat="server" EnablePartialRendering="true">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1"
    runat="server">
    <ContentTemplate>
        <asp:Image ID="Image1"
            runat="server" BorderColor="#FFCCFF"
            CssClass="resize"
            BorderStyle="Double" />
    </ContentTemplate>
    <Triggers>
        <asp:AsyncPostBackTrigger
            ControlID="GridView1"
            EventName="SelectedIndexChanged">
        </asp:AsyncPostBackTrigger>
    </Triggers>
</asp:UpdatePanel>
</form>