ASP.NET：隐藏所有 Div 内容 - 无法加载视图状态。错误

Question

我正在尝试使用以下代码以编程方式隐藏整个 div：

System.Web.UI.Control divMask = (System.Web.UI.Control)this.Page.FindControl("urinaDiv");

System.Web.UI.HtmlControls.HtmlGenericControl htmlCtrl = (System.Web.UI.HtmlControls.HtmlGenericControl)divMask;            
                            htmlCtrl.Attributes["Visible"] = "false";

这里是 div：

 <div id="urinaDiv" sytle="width: 600px" runat="server">
                                <asp:Label ID="relatorioUrinaLabel" runat="server" Text="Relatórios Urina"></asp:Label>


                                <br />
                                <br />



                                    <asp:GridView ID="urinasGridview" runat="server" AutoGenerateColumns="False" DataSourceID="ObjectDataSource3">
                                        <Columns>
                                            <asp:BoundField DataField="idUtente" HeaderText="IDUten" SortExpression="idUtente" />
                                            <asp:BoundField DataField="nome" HeaderText="Nome" SortExpression="nome" />
                                            <asp:BoundField DataField="apelido" HeaderText="Apelido" SortExpression="apelido" />
                                            <asp:BoundField DataField="data" HeaderText="Data" SortExpression="data" />
                                            <asp:BoundField DataField="idUtenteMarcacao" HeaderText="idUtenteMarcacao" SortExpression="idUtenteMarcacao" visible="false"/>
                                            <asp:BoundField DataField="densidade" HeaderText="Densidade" SortExpression="densidade" />
                                            <asp:BoundField DataField="ph" HeaderText="pH" SortExpression="ph" />
                                            <asp:BoundField DataField="glicose" HeaderText="Glicose" SortExpression="glicose" />
                                            <asp:BoundField DataField="proteinas" HeaderText="Proteínas" SortExpression="proteinas" />
                                            <asp:BoundField DataField="limitacoes" HeaderText="Limitcações" SortExpression="limitacoes" />
                                            <asp:BoundField DataField="observacoes" HeaderText="Obs." SortExpression="observacoes" />
                                        </Columns>
                                    </asp:GridView>



                                <asp:ObjectDataSource ID="ObjectDataSource3" runat="server" SelectMethod="getRelatoriosUrina" 
                                    TypeName="BusinessLogicLayer.Lab_Manager" ></asp:ObjectDataSource>

                                <asp:ObjectDataSource ID="ObjectDataSource6" runat="server" SelectMethod="getRelatoriosUrinaUtente" 
                                    TypeName="BusinessLogicLayer.Lab_Manager" OnSelecting="urinaSelecting"   ><SelectParameters>
                                              <asp:Parameter Name="idUtente" /></SelectParameters></asp:ObjectDataSource>
                                <br />
                                <br />
                                     </div>

但我收到以下错误：

加载视图状态失败。正在加载视图状态的控制树必须与在先前请求期间用于保存视图状态的控制树匹配。例如，动态添加控件时，在回发期间添加的控件必须与在初始请求期间添加的控件的类型和位置相匹配。

非常感谢！

Answer 1

当您拥有runat="server" 时，无需进行所有转换

只使用 Visible 属性：

urinaDiv.Visible=false;