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我有一个下拉列表：

<asp:DropDownList ID="userNameDropDown" runat="server" DataSourceID="SqlDataSource1"
    DataTextField="Name" DataValueField="PK_User" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"
    AutoPostBack="true">
</asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ApplicationServices %>"
    SelectCommand="SELECT [Name], [PK_User] FROM [User] ORDER BY [Name]"></asp:SqlDataSource>

还有一个带有多个面板的页面。在第一个面板上，此菜单影响如何将信息输入数据库。在第二个面板上，它会影响数据的显示方式：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource4"
            AllowPaging="True" BackColor="#DEBA84" BorderColor="#DEBA84" BorderStyle="None"
            BorderWidth="1px" CellPadding="3" CellSpacing="2" OnRowDeleting="GridView1_OnRowDeleting" OnRowEditing="GridView1_OnRowEditing" 
            DataKeyNames="PK_DailyTaskHours, PK_NonScrumStory" AutoPostBack="false">
            <Columns>
                <asp:BoundField DataField="Catagory" HeaderText="Support Catagory" SortExpression="Catagory" />
                <asp:BoundField DataField="AppName" HeaderText="Application Name" SortExpression="IncidentNumber" />
                <asp:BoundField DataField="IncidentNumber" HeaderText="Incident #" SortExpression="IncidentNumber" />
                <asp:BoundField DataField="Hours" HeaderText="Hours" SortExpression="Hours" />
                <asp:BoundField DataField="Description" HeaderText="Description" SortExpression="Description" />
                <asp:BoundField DataField="CreatedDate" HeaderText="Created Date" SortExpression="CreatedDate"  />
                <asp:CommandField ShowEditButton="True" />
                <asp:CommandField ShowDeleteButton="True" />
            </Columns>
            <FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
            <HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
            <PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
            <RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
            <SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
            <SortedAscendingCellStyle BackColor="#FFF1D4" />
            <SortedAscendingHeaderStyle BackColor="#B95C30" />
            <SortedDescendingCellStyle BackColor="#F1E5CE" />
            <SortedDescendingHeaderStyle BackColor="#93451F" />
        </asp:GridView>
        <asp:SqlDataSource ID="SqlDataSource4" runat="server" ConnectionString="<%$ ConnectionStrings:ApplicationServices %>"
            SelectCommand="SELECT [NonScrumStory].[IncidentNumber], [NonScrumStory].[Description], [NonScrumStory].[CreatedDate], 
            [DailyTaskHours].[Hours], [Application].[AppName], [SupportCatagory].[Catagory], [DailyTaskHours].[PK_DailyTaskHours], 
            [NonScrumStory].[PK_NonScrumStory] FROM [NonScrumStory], [DailyTaskHours], [Application], [SupportCatagory] WHERE 
            ([NonScrumStory].[UserId] = @userIdSelected) AND ([NonScrumStory].[PK_NonScrumStory] = [DailyTaskHours].[NonScrumStoryId]) 
            AND ([NonScrumStory].[CatagoryId] = [SupportCatagory].[PK_SupportCatagory]) AND 
            ([NonScrumStory].[ApplicationId] = [Application].[PK_Application]) AND ([NonScrumStory].[Deleted] != 1)"
            DeleteCommand="UPDATE [NonScrumStory] SET [Deleted] = 1 WHERE (PK_NonScrumStory = @nonScrumStoryPK); 
            UPDATE [DailyTaskHours] SET [Deleted] = 1 WHERE (PK_DailyTaskHours = @dailyTaskHoursPK); ">
            <SelectParameters>
                <asp:QueryStringParameter Name="userIdSelected" Type="String" />
            </SelectParameters>
            <DeleteParameters>
                <asp:QueryStringParameter Name="dailyTaskHoursPK" Type="String" />
                <asp:QueryStringParameter Name="nonScrumStoryPK" Type="String" />
            </DeleteParameters>
        </asp:SqlDataSource>

这是页面后端进行更改的代码：

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    //change WHERE clause for SQL statement that effects grid view based on drop down menu selection
    SqlDataSource4.SelectParameters["userIdSelected"].DefaultValue = userNameDropDown.SelectedItem.Value;
}

有显示和隐藏面板的单选按钮。当显示 gridview 的面板打开时，下拉菜单中的更改会反映并且 gridview 会更新。

当另一个单选按钮被选中并且 gridview 面板被隐藏并且用户更改下拉菜单时，不会反映更新。您再次更改单选按钮并显示 gridview 面板，正在显示上一个表格。我该如何解决？

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