Question

我有以下aspx页面

<asp:Content ID="Content2" ContentPlaceHolderID="contentConteudo" runat="server">        
    <table border="0" width="680" style="background-color:#f0f0f0" id="tabelaPrincipal" runat="server">
        <tr>
            <td style="width: 180px !important;">            
                <asp:RadioButtonList ID="rbBuscas" runat="server">
                    <asp:ListItem Selected="True">Novo Curso</asp:ListItem>
                    <asp:ListItem>Buscar Lista de Presença</asp:ListItem>
                </asp:RadioButtonList>           
            </td>
            <td>
                Data: <br />
                <input id="DtBusca" type="text" />                
                <asp:Button id="btnSelecionarData" runat="server" Text="Buscar" />
            </td>
        </tr>
    </table>


    <br /><br />
    <div id="infoGrid" runat="server">
        <cc1:GridView ID="grdImoveis" CssClass="StyleGrid" Width="100%" runat="server" ShowHeader="false"
            AutoGenerateColumns="False" DataSourceID="dsGrid" BorderWidth="0px" GridLines="None"
            AllowPaging="True" EnableModelValidation="True">
            <AlternatingRowStyle BackColor="White" CssClass="EstiloDalinhaAlternativaGrid" HorizontalAlign="Center" />
            <RowStyle CssClass="EstiloDalinhaGrid" HorizontalAlign="Center" />
            <Columns>
                <asp:TemplateField HeaderText="Nome">
                    <ItemTemplate>
                        <div class="<%# Eval("Usuario_Id").ToString() %>">
                           <%# Eval("NomeCompleto").ToString() %>
                        </div>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField HeaderText="Cargo" DataField="DescricaoCargo1" />
                <asp:BoundField HeaderText="Data Cadastro" DataField="DataHora" />
                <asp:TemplateField ControlStyle-CssClass="acoes_lista_imovel" HeaderText="Curso">
                    <ItemTemplate>
                        <div class="acoes_lista_imovel">
                            <%# montaIcones(Eval("Usuario_Id").ToString())%>
                        </div>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField>
                    <ItemTemplate>
                        <div>
                            <%# montaIconesDocumentacao(Eval("Usuario_Id").ToString())%>
                        </div>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </cc1:GridView>
        <asp:SqlDataSource ID="dsGrid" runat="server"></asp:SqlDataSource>
    </div>
    <span id="printContrato" class="diasRelatorio btStep ui-button ui-widget ui-state-default ui-corner-all"></span>


</asp:Content>

当我点击<asp:Button>时出现问题，我试图发送OnClick事件，但仍然会发生错误。

<asp:Button id="btnSelecionarData" runat="server" Text="Buscar" />

错误

Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.

代码背后

    public partial class ListaUsuarioProvisorio : System.Web.UI.Page
    {
        neticonn.Conexao c = new neticonn.Conexao();
        Utilidade.QuebraToken tk = new Utilidade.QuebraToken();
        public string icones = string.Empty;

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                this.CarregaLista();
            }
        }

        protected void CarregaLista()
        {
            string select = string.Empty;
            select += "SELECT San_Credenciada.Apelido, San_Usuario.NomeCompleto, San_Usuario.Usuario_Id, San_Usuario.DescricaoCargo1, "
                + "CONVERT(varchar, San_Usuario.DataHora, 103) AS DataHora "
                + "FROM San_Usuario "
                + "JOIN San_Credenciada "
                + "ON San_Usuario.Credenciada_Id = San_Credenciada.Credenciada_Id "
                + "WHERE San_Usuario.Provisorio = 1 "
                + "AND San_Usuario.Excluido = 0 "
                + "GROUP BY San_Credenciada.Apelido, San_Usuario.NomeCompleto, San_Usuario.Usuario_Id, " 
                + "San_Usuario.DescricaoCargo1, San_Usuario.DataHora "
                + "ORDER BY San_Usuario.DataHora ASC ";

            dsGrid.ConnectionString = c.Con;
            dsGrid.SelectCommand = select;
            dsGrid.Dispose();

            GridViewHelper helper = new GridViewHelper(this.grdImoveis);
            helper.RegisterGroup("Apelido", true, true);            
            helper.GroupHeader += new GroupEvent(helper_GroupHeader);
            helper.ApplyGroupSort();
        }

        protected void CarregaLista(string data)
        {
            string select = string.Empty;
            select += "SELECT San_Credenciada.Apelido, San_Usuario.NomeCompleto, San_Usuario.Usuario_Id, San_Usuario.DescricaoCargo1, "
                + "CONVERT(varchar, San_Usuario.DataHora, 103) AS DataHora "
                + "FROM San_Usuario "
                + "JOIN San_Credenciada "
                + "ON San_Usuario.Credenciada_Id = San_Credenciada.Credenciada_Id "
                + "JOIN San_UsuarioCurso "
                + "ON San_Usuario.Usuario_Id = San_UsuarioCurso.Usuario_Id "
                + "WHERE San_Usuario.Provisorio = 1 "
                + "AND San_Usuario.Excluido = 0 "
                + "AND San_UsuarioCurso = " + data + " "
                + "GROUP BY San_Credenciada.Apelido, San_Usuario.NomeCompleto, San_Usuario.Usuario_Id, "
                + "San_Usuario.DescricaoCargo1, San_Usuario.DataHora "
                + "ORDER BY San_Usuario.DataHora ASC ";

            dsGrid.ConnectionString = c.Con;
            dsGrid.SelectCommand = select;
            dsGrid.Dispose();

            GridViewHelper helper = new GridViewHelper(this.grdImoveis);
            helper.RegisterGroup("Apelido", true, true);
            helper.GroupHeader += new GroupEvent(helper_GroupHeader);
            helper.ApplyGroupSort();
        }

        private void helper_GroupHeader(string groupName, object[] values, GridViewRow row)
        {
            string xCol = "#f56d01";
            string yCol = "#cbcbcb";
            Color c = System.Drawing.ColorTranslator.FromHtml(xCol);
            Color c2 = System.Drawing.ColorTranslator.FromHtml(yCol);

            if (groupName == "Apelido")
            {
                row.BackColor = c;
                row.Cells[0].Text = "<div class='AgrupamentoPrincipal'>&nbsp;&nbsp;" + Maiscula(row.Cells[0].Text) + "</div>";
                row.Cells[0].Text += "</div><tr bgcolor=#e2dcd2 class=thGrid><th scope=col height='27'>&nbsp;Nome</th><th scope=col>Cargo</th><th>Data Cadastro</th><th scope=col>Curso Básico</th><th>Documentação Imobiliária</th></tr>";             
            }
        }

        protected string Maiscula(string texto)
        {
            texto = texto.ToUpper();
            return texto;
        }

        protected string montaIcones(string id)
        {
            icones = string.Empty;            
            int Credenciada = Convert.ToInt32(tk.CarregaToken(1, Request.Cookies["token"].Value));
            icones = "<img src='../tema/default/icon/icon-cinza/check.png' onclick=\"Visibilidade('" + id + "', '" + id + "', '" + Credenciada + "')\" style='cursor:pointer;margin: 4px;text-align:center;' ID='" + id + "' />";
            return icones;
        }

        protected string montaIconesDocumentacao(string id)
        {
            icones = string.Empty;
            int Credenciada = Convert.ToInt32(tk.CarregaToken(1, Request.Cookies["token"].Value));
            icones = "<img src='../tema/default/icon/icon-cinza/documents.png' onclick=\"VisibilidadeDocumentacao('" + id + "', 'documentacao_" + id + "', '" + Credenciada + "')\" style='cursor:pointer;margin: 4px;text-align:center;' ID='documentacao_" + id + "' />";
            return icones;
        }

        public void btnSelecionarData_OnClick(object sender, EventArgs e)
        {
            if (this.rbBuscas.SelectedIndex == 1 && !this.DtBusca.Value.Equals(string.Empty))
            {
                this.CarregaLista(this.DtBusca.Value);
            }
        }
    }
}

有人可以帮助我吗？

Answer 1

当您在后面的代码中创建自定义控件时，通常会发生此问题。我将看一下这篇文章，它深入探讨了问题的根源以及如何查看代码中的问题：

http://blog.typps.com/2008/01/failed-to-load-viewstate-typical.html

单击按钮时出错

1 个答案: