Failed to load viewstate

Question

Failed to load viewstate

Jen*_*Jen 5 c# viewstate events listview

OK have just started getting this error and I'm not sure why. I have a hosting page which has listview and a panel with a usercontrol. The listview loads up records with a linkbutton. You click the link button to edit that particular record - which gets loaded up in the formview (within the usercontrol) which goes to edit mode. After an update occurs in the formview I'm triggering an event which my hosting page is listening for. The hosting page then rebinds the listview to show the updated data. This is all inside an updatepanel.

So this all works - but when I then go to click on a different linkbutton I get the below error:

Message: Sys.WebForms.PageRequestManagerServerErrorException: 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.

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Any suggestions on how to fix?

我的listview似乎正在成功反弹 - 我可以看到我更改的数据..我只是不知道为什么当我点击链接按钮时它抱怨viewstate.或者有更好的方法来更新列表视图中的数据？我的listview和formview绑定到objectdata源(如果重要的话)

谢谢您的帮助!

这是我控制的代码隐藏.其他人已经评论过这个错误与更改formview模式有关但是尝试了一些没有成功的更改:

public partial class UserControls_RatesEditDate : System.Web.UI.UserControl
{

    public delegate void EditDateRateEventHandler(DateTime theDateTime);
    public event EditDateRateEventHandler EditDateRateSelected;

    public delegate void UpdateDateRateEventHandler();
    public event UpdateDateRateEventHandler EditDateRateUpdated;

    public int PropertyID { get; set; }
    public int AccommodationTypeID { get; set; }
    public DateTime TheDateTime { get; set; }
    public PropertyCMSRate Rate { get; set; }

    // display filters
    public bool DisplayMTABuy { get; set; }
    public bool DisplayMTASell { get; set; }
    public bool DisplayAffiliate { get; set; }
    public bool DisplayWeekly { get; set; }
    public bool DisplayThirtyDay { get; set; }
    public bool DisplayFlexi { get; set; }

    protected void Page_PreRender(object sender, EventArgs e)
    {
        if (Rate != null || TheDateTime != DateTime.MinValue)
        {
            if (TheDateTime == DateTime.MinValue)
            {
                frmViewRatesDate.DataSource = new List<PropertyCMSRate> { Rate };
            }
            else
            {
                PropertyCMSRateItemDs.SelectParameters["propertyID"].DefaultValue = PropertyID.ToString();
                PropertyCMSRateItemDs.SelectParameters["accommodationTypeId"].DefaultValue = AccommodationTypeID.ToString();
                PropertyCMSRateItemDs.SelectParameters["theDateTime"].DefaultValue = TheDateTime.ToString();
                frmViewRatesDate.DataSourceID = "PropertyCMSRateItemDs";

                frmViewRatesDate.ChangeMode(FormViewMode.Edit);
            }

            frmViewRatesDate.DataBind();

            if (frmViewRatesDate.CurrentMode == FormViewMode.Edit)
            {
                ((HiddenField)frmViewRatesDate.FindControl("hdnPropertyID")).Value = PropertyID.ToString();
                ((HiddenField)frmViewRatesDate.FindControl("hdnAccommTypeID")).Value = AccommodationTypeID.ToString();

            }

        }
    }

    protected void lnkEditDate_Click(object sender, EventArgs e)
    {
        if (EditDateRateSelected != null)
            EditDateRateSelected(Convert.ToDateTime(((LinkButton)frmViewRatesDate.Row.FindControl("lnkEditDate")).Text));

    }

    protected void btnUpdate_Click(object sender, EventArgs e)
    {

        if (Page.IsValid)
        {
            if (EditDateRateUpdated != null)
                EditDateRateUpdated();
        }

    }

    protected void frmViewRatesDate_ItemCommand(object sender, FormViewCommandEventArgs e)
    {
        if (e.CommandName == "Update")
        {
            PropertyCMSRateItemDs.UpdateParameters["propertyId"].DefaultValue = ((HiddenField)frmViewRatesDate.FindControl("hdnPropertyID")).Value;
            PropertyCMSRateItemDs.UpdateParameters["accommodationTypeId"].DefaultValue = ((HiddenField)frmViewRatesDate.FindControl("hdnAccommTypeID")).Value;
            PropertyCMSRateItemDs.UpdateParameters["minStay"].DefaultValue = ((DropDownList)frmViewRatesDate.FindControl("EditPriceMinStayList")).SelectedValue;
        }
    }

    protected void PropertyCMSRateItemDs_Updated(object sender, ObjectDataSourceStatusEventArgs e)
    {

        if (EditDateRateUpdated != null)
            EditDateRateUpdated();
    }
}

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好的,这是我的aspx页面 - 抱歉意识到在我离开办公室抢食物后可能会有所帮助.:)在我的listview包含该单词之前发表评论..

<%@ MasterType VirtualPath="~/Properties-Cms/AddEdit.master" %>
<%@ Register Src="../UserControls/RatesEditDate.ascx" TagName="RatesEditDate" TagPrefix="uc1" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <Triggers>
        </Triggers>
        <ContentTemplate>
                <asp:ValidationSummary ID="ValidationSummary1" runat="server" ValidationGroup="Main" />
            <div class="bluebox">
                <asp:ValidationSummary ID="ValidationSummary2" runat="server" ValidationGroup="AddAccommodationType" />
                <asp:CustomValidator ID="DisplayPriceValidation" Display="Dynamic" runat="server" OnServerValidate="DisplayPrice_Validated"
                                ValidationGroup="Main" ErrorMessage="Please ensure you have selected Accommodation and selected a valid display rates option">
                            </asp:CustomValidator>
                <div class="col33">
                    <!-- accommodation -->
                    <div class="field">
                        <asp:Label ID="Label1" runat="server" Text="Select Accommodation" AssociatedControlID="Accommodations1" />
                        <asp:DropDownList ID="Accommodations1" runat="server" AutoPostBack="true" DataTextField="AccommodationTypeDescription"
                            DataValueField="Id" OnDataBound="Accommodations1_DataBound" OnSelectedIndexChanged="Accommodations1_SelectedIndexChanged"
                            Width="200px" DataSourceID="AccommodationDs">
                        </asp:DropDownList>
                        <asp:ObjectDataSource ID="AccommodationDs" runat="server" OldValuesParameterFormatString="original_{0}"
                            SelectMethod="ListByPropertyId" TypeName="Shared.MtaLib.Bll.PropertyAccommodationController">
                            <SelectParameters>
                                <asp:Parameter Name="PropertyId" Type="Int32" />
                            </SelectParameters>
                        </asp:ObjectDataSource>
                    </div>
                </div>
                <!-- middle column -->
                <div class="col33">
                    <ul style="list-style-type: none;">
                        <li>
                            <asp:Label ID="Label100" runat="server" Text="Accommodation" AssociatedControlID="lblAccom" />&nbsp;<asp:Label
                                ID="lblAccom" runat="server" Text="" /></li>
                        <li>
                            <asp:Label ID="Label101" runat="server" Text="Local Label" AssociatedControlID="lblLocalLabel" />&nbsp;<asp:Label
                                ID="lblLocalLabel" runat="server" Text="" /></li>
                    </ul>
                </div>
                <!--Right hand side Level 1 -->
                <div class="col33">
                    <asp:Button runat="server" ID="btnAddAccommodation" Text="Add Accommodation" OnClick="btnAddAccommodation_Click" /><br />
                    <br />
                    <asp:LinkButton runat="server" ID="lnkEditAccommodation" Text="View/Edit available Accommodations"
                        OnClick="lnkEditAccommodation_Click" />
                    <br />
                </div>
                <div style="clear: both;">
                </div>
            </div>
            <!--Left hand side Level 2 -->
            <asp:Panel runat="server" ID="pnlViewAccommodationRatesDates">
                <div style="clear: both;" />
                <div class="box">
                    <div class="col40">
                        Display rates Range<br />
                        <asp:RadioButton ID="ViewRange" runat="server" GroupName="DisplayDate" Checked="true" />
                        <asp:Label runat="server" ID="Label5" AssociatedControlID="txtDisplayFrom" Text="From" />
                        <asp:TextBox ID="txtDisplayFrom" runat="server"></asp:TextBox>
                        <asp:Label runat="server" ID="Label6" AssociatedControlID="txtDisplayTo" Text="To" />
                        <asp:TextBox ID="txtDisplayTo" runat="server"></asp:TextBox>
                    </div>
                    <div class="col20">
                        <br />
                        <asp:RadioButton ID="ViewRange1" runat="server" GroupName="DisplayDate" Text="Next 1 month" /><br />
                        <asp:RadioButton ID="ViewRange3" runat="server" GroupName="DisplayDate" Text="Next 3 month" /><br />
                        <asp:RadioButton ID="ViewRange6" runat="server" GroupName="DisplayDate" Text="Next 6 month" />
                    </div>
                    <div class="col20">
                        Show<br />
                        <asp:CheckBox ID="chkDisplayMTABuy" runat="server" Text="MTA Buy" Checked="true" /><br />
                        <asp:CheckBox ID="chkDisplayMTASell" runat="server" Text="MTA Sell" Checked="true" /><br />
                        <asp:CheckBox ID="chkDisplayAffiliateNett" runat="server" Text="Affiliate Nett" Checked="true" /><br />
                        <asp:CheckBox ID="chkDisplayWeekly" runat="server" Text="Weekly" Checked="true" /><br />
                        <asp:CheckBox ID="chkDisplay30Day" runat="server" Text="30 Day" Checked="true" /><br />
                        <asp:CheckBox ID="chkDisplayFlexi" runat="server" Text="Flexi" Checked="true" />
                    </div>
                    <div class="col20">
                        <br />
                        <br />
                        <br />
                        <asp:Button ID="btnDisplayRates" runat="server" Text="Display Rates" OnClick="btnDisplayRates_Click" />
                        <br />
                        <br />
                        <asp:LinkButton ID="lnkAddEditRate" runat="server" Text="Add / Edit Rates" OnClick="lnkAddEditRate_Click" />
                    </div>
                    <div style="clear: both;" />
                </div>
            </asp:Panel>
            <!-- hidden panel removed as I'm out of characters -->
            <!-- Listview containing user control.. usercontrol has formview with a linkbutton -->
            <asp:Panel runat="server" ID="pnlViewAccommodationRates" Visible="false">
                <div class="propertyaddedit_ratesbox">
                    <fieldset>
                        <legend>Click on individual dates to edit</legend>
                        <asp:Panel ID="Panel5" runat="server" ScrollBars="Vertical" Height="400">
                            <asp:ListView ID="PropertyAccommodationRates1" runat="server" DataSourceID="PropertyCMSRateListDs"
                                ItemPlaceholderID="itemsGoHere" OnItemDataBound="PropertyAccommodationRates1_ItemDataBound"
                                GroupItemCount="7" GroupPlaceholderID="groupsGoHere">
                                <GroupTemplate>
                                    <tr>
                                        <asp:PlaceHolder runat="server" ID="itemsGoHere" />
                                    </tr>
                                </GroupTemplate>
                                <ItemTemplate>
                                    <td>
                                        <uc1:RatesEditDate ID="RatesViewDate1" runat="server" OnEditDateRateSelected="RatesEditDate1_EditDateRateSelected"
                                            OnEditDateRateUpdated="RatesEditDate1_EditDateRateUpdated" />
                                    </td>
                                </ItemTemplate>
                                <LayoutTemplate>
                                    <table width="525px" cellspacing="2">
                                        <tr class="propertyaddedit_gridViewRates">
                                            <th class="propertyaddedit_ratesGrid">
                                                Monday
                                            </th>
                                            <th class="propertyaddedit_ratesGrid">
                                                Tuesday
                                            </th>
                                            <th class="propertyaddedit_ratesGrid">
                                                Wednesday
                                            </th>
                                            <th class="propertyaddedit_ratesGrid">
                                                Thursday
                                            </th>
                                            <th class="propertyaddedit_ratesGrid">
                                                Friday
                                            </th>
                                            <th class="propertyaddedit_ratesGrid">
                                                Saturday
                                            </th>
                                            <th class="propertyaddedit_ratesGrid">
                                                Sunday
                                            </th>
                                        </tr>
                                        <tr>
                                            <asp:PlaceHolder runat="server" ID="groupsGoHere" />
                                        </tr>
                                    </table>
                                </LayoutTemplate>
                            </asp:ListView>
                            <asp:ObjectDataSource ID="PropertyCMSRateListDs" runat="server" SelectMethod="ListPropertyCMSRates"
                                TypeName="Shared.MtaLib.Bll.PropertyRateController" OnSelecting="PropertyCMSRateListDs_Selecting">
                                <SelectParameters>
                                    <asp:Parameter Name="propertyId" Type="Int32" />
                                    <asp:Parameter Name="accommodationTypeId" Type="Int32" />
                                    <asp:Parameter Name="minDateTime" Type="DateTime" />
                                    <asp:Parameter Name="maxDateTime" Type="DateTime" />
                                    <asp:Parameter Name="fillMondays" Type="Boolean" DefaultValue="true" />
                                </SelectParameters>
                            </asp:ObjectDataSource>
                        </asp:Panel>
                    </fieldset>
                </div>
            </asp:Panel>



            <div style="clear: both;">
            </div>
            <!-- this is the usercontrol where the edit occurs -->
            <div runat="server" id="divEditRate" visible="true">
                <uc1:RatesEditDate ID="RatesEditDate1" runat="server" />
            </div>
        </ContentTemplate>
    </asp:UpdatePanel>
</asp:Content>

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我的用户控制:

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="RatesEditDate.ascx.cs"
    Inherits="UserControls_RatesEditDate" %>
<asp:FormView ID="frmViewRatesDate" runat="server" Height="50px" Width="125px" OnItemCommand="frmViewRatesDate_ItemCommand"
    DataKeyNames="TheDateTime">
    <ItemTemplate>
        <asp:LinkButton ID="lnkEditDate" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "TheDateTime", "{0:dd/MM/yyyy}") %>'
            OnClick="lnkEditDate_Click" />
        <asp:Literal ID="Literal1" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "MTABuyRateDaily", "{0:n}") %>'
            Visible='<%# DisplayMTABuy %>' />
        <asp:Literal ID="Literal2" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "MTASellRateDaily", "{0:n}") %>'
            Visible='<%# DisplayMTASell %>' />
        <asp:Literal ID="Literal3" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "AffiliateNettDaily", "{0:n}") %>'
            Visible='<%# DisplayAffiliate %>' />
        <asp:Literal ID="Literal4" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "MTABuyRateWeekly", "{0:n}") %>'
            Visible='<%# DisplayWeekly %>' />
        <asp:Literal ID="Literal5" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "MTASellRateWeekly", "{0:n}") %>'
            Visible='<%# DisplayWeekly %>' />
        <asp:Literal ID="Literal6" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "AffiliateNettWeekly", "{0:n}") %>'
            Visible='<%# DisplayWeekly %>' />
        <asp:Literal ID="Literal7" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "ThirtyDay", "{0:n}") %>'
            Visible='<%# DisplayThirtyDay %>' />
        <asp:Literal ID="Literal8" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Flexi", "{0:n}") %>'
            Visible='<%# DisplayFlexi %>' />
    </ItemTemplate>
    <EditItemTemplate>
        <div class="field">
            <asp:Literal ID="TheDate" runat="server" Text='<%# Bind("TheDateTime", "{0:dd/MM/yyyy}") %>' />
        </div>
        <div class="field">
            <asp:Label ID="Label1" Text="MTA buy rate" AssociatedControlID="MTABuyRate1" runat="server" /><asp:TextBox
                ID="MTABuyRate1" runat="server" Text='<%# Bind("MTABuyRateDaily", "{0:n}")%>' />
            <asp:CompareValidator ID="MTABuyRateValidator" runat="server" Type="Currency" ControlToValidate="MTABuyRate1"
                Operator="GreaterThan" ValueToCompare="0" ErrorMessage="" Display="Dynamic" ValidationGroup="EditPrice">
                <asp:Image ID="Image8" SkinID="ValidationErrorImage" runat="server" />
            </asp:CompareValidator>
            <asp:RequiredFieldValidator ID="MTABuyRateValidator2" runat="server" ControlToValidate="MTABuyRate1"
                ErrorMessage="" Display="Dynamic" ValidationGroup="EditPrice">
                <asp:Image ID="Image33" SkinID="ValidationErrorImage" runat="server" />
            </asp:RequiredFieldValidator>
        </div>
        <!-- similar items removed due to character restriction -->
        <div class="field">
            <asp:Label ID="Label6" Text="Total PAX" runat="server" AssociatedControlID="TotalPax1" />
            <asp:CompareValidator ID="TotalPaxValidator1" runat="server" ControlToValidate="TotalPax1"
                Operator="NotEqual" ValueToCompare="0" ErrorMessage="Please choose a non zero Total Pax "
                Display="Dynamic" ValidationGroup="EditPrice">
                <asp:Image ID="Image15" SkinID="ValidationErrorImage" runat="server" />
            </asp:CompareValidator>
            <asp:DropDownList ID="TotalPax1" runat="server">
                <asp:ListItem Value="0" />
                <asp:ListItem Value="1" />
                <asp:ListItem Value="2" />
                <asp:ListItem Value="3" />
                <asp:ListItem Value="4" />
                <asp:ListItem Value="5" />
                <asp:ListItem Value="6" />
                <asp:ListItem Value="7" />
                <asp:ListItem Value="8" />
                <asp:ListItem Value="9" />
                <asp:ListItem Value="10" />
            </asp:DropDownList>
        </div>
        <div class="field">
            <asp:Label runat="server" ID="Label15" AssociatedControlID="EditPriceMinStayList"
                Text="Min stay (nights)" />
            <asp:CompareValidator ID="EditPriceMinStayListValidator1" runat="server" ControlToValidate="EditPriceMinStayList"
                Operator="NotEqual" ValueToCompare="0" ErrorMessage="Please choose a non zero Min Stay"
                Display="Dynamic" ValidationGroup="EditPrice">
                <asp:Image ID="Image6" SkinID="ValidationErrorImage" runat="server" />
            </asp:CompareValidator>
            <!-- todo bind-->
            <asp:DropDownList ID="EditPriceMinStayList" runat="server">
                <asp:ListItem Value="0" />
                <asp:ListItem Value="1" />
                <asp:ListItem Value="2" />
                <asp:ListItem Value="3" />
                <asp:ListItem Value="4" />
                <asp:ListItem Value="5" />
                <asp:ListItem Value="6" />
                <asp:ListItem Value="7" />
                <asp:ListItem Value="8" />
                <asp:ListItem Value="9" />
                <asp:ListItem Value="10" />
                <asp:ListItem Value="11" />
                <asp:ListItem Value="12" />
                <asp:ListItem Value="13" />
                <asp:ListItem Value="14" />
                <asp:ListItem Value="15" />
                <asp:ListItem Value="16" />
                <asp:ListItem Value="17" />
                <asp:ListItem Value="18" />
                <asp:ListItem Value="19" />
                <asp:ListItem Value="20" />
                <asp:ListItem Value="21" />
                <asp:ListItem Value="22" />
                <asp:ListItem Value="23" />
                <asp:ListItem Value="24" />
                <asp:ListItem Value="25" />
                <asp:ListItem Value="26" />
                <asp:ListItem Value="27" />
                <asp:ListItem Value="28" />
                <asp:ListItem Value="29" />
                <asp:ListItem Value="30" />
            </asp:DropDownList>
        </div>
        <div class="field">
            <%--<asp:Button ID="btnUpdate" runat="server" Text="Update" OnClick="btnUpdate_Click" CommandName="Update" />--%>
            <asp:Button ID="btnUpdate" runat="server" Text="Update" CommandName="Update" ValidationGroup="EditPrice" />
        </div>
        <asp:HiddenField runat="server" ID="hdnPropertyID" />
        <asp:HiddenField runat="server" ID="hdnAccommTypeID" />
    </EditItemTemplate>
</asp:FormView>
<asp:ObjectDataSource ID="PropertyCMSRateItemDs" runat="server" SelectMethod="ListPropertyCMSRate"
    TypeName="Shared.MtaLib.Bll.PropertyRateController" UpdateMethod="UpdatePropertyCMSRate"
    OldValuesParameterFormatString="original_{0}" OnUpdated="PropertyCMSRateItemDs_Updated">
    <UpdateParameters>
        <asp:Parameter Name="propertyId" Type="Int32" />
        <asp:Parameter Name="accommodationTypeId" Type="Int32" />
        <asp:Parameter Name="minStay" Type="Int32" />
        <asp:Parameter Name="TheDateTime" Type="DateTime" />
        <asp:Parameter Name="MTABuyRateDaily" Type="Decimal" />
        <asp:Parameter Name="MTASellRateDaily" Type="Decimal" />
        <asp:Parameter Name="AffiliateNettDaily" Type="Decimal" />
        <asp:Parameter Name="MTABuyRateWeekly" Type="Decimal" />
        <asp:Parameter Name="MTASellRateWeekly" Type="Decimal" />
        <asp:Parameter Name="AffiliateNettWeekly" Type="Decimal" />
        <asp:Parameter Name="ThirtyDay" Type="Decimal" />
        <asp:Parameter Name="Flexi" Type="Decimal" />
        <asp:Parameter Name="IsBreakfastIncluded" Type="Boolean" />
        <asp:Parameter Name="IsFairWarning" Type="Boolean" />
        <asp:Parameter Name="TotalPax" Type="Int32" />
        <asp:Parameter Name="original_TheDateTime" Type="DateTime" />
    </UpdateParameters>
    <SelectParameters>
        <asp:Parameter Name="propertyId" Type="Int32" DefaultValue="0" />
        <asp:Parameter Name="accommodationTypeId" Type="Int32" DefaultValue="0" />
        <asp:Parameter Name="theDateTime" Type="DateTime" />
    </SelectParameters>
</asp:ObjectDataSource>

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Answer 1

Har*_*arv 5

我已经和这个问题争了好几个小时和几天了.我发现的答案都没有完全解决我的问题,但我终于找到了解决方案.

我的方案如下.我有一个GridView和一个FormView.这些是MultiView控件的两个视图.我在GridView中显示数据列表.我的编辑按钮切换到FormView,因为我想要编辑的字段多于网格视图中的水平线(没有水平滚动).

如果我从FormView的编辑模式取消并返回到GridView(我使用OnClick事件来执行此操作),下次发生回发时,我会收到ViewState错误.

如果我从FormView的编辑模式取消并只是切换到ReadOnly模式,然后取消返回到GridView,一切正常.

解决方案:我的解决方案是将FormView的默认模式设置为"编辑".我的理论是,如果FormView默认模式是"ReadOnly",当我从FormView的编辑模式取消时,下次页面加载时,它会尝试将编辑模式的ViewState应用于ReadOnly模式(默认情况下为页面加载).通过将默认视图设置为"编辑",使用编辑模式保存的ViewState将在页面加载后重新加载到新的编辑模式(默认).

即使MultiView的当前ActiveView正在显示网格而不是表单,这一切都会发生.

我没有遇到任何ViewState问题,因为将FormView的默认模式切换为"编辑"

希望这会有所帮助,我欢迎任何评论.

谢谢.

哈夫萨瑟

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