c# - AccessViolationException 未处理

Question

我正在尝试使用 Steve Sanderson's blog post为了在我的 ASP MVC 3 View 中编辑可变长度列表。该项目构建良好，但是每当呈现局部 View 时，程序就会在 using(Html.BeginColletionItem() 行上爆炸并出现此错误:

AccessViolationException was unhandled
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

这是完整异常的屏幕截图

下面是完整的堆栈跟踪

at Microsoft.VisualStudio.WebHost.Host.ProcessRequest(Connection conn)
at Microsoft.VisualStudio.WebHost.Server.OnSocketAccept(Object acceptedSocket)
at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()

局部 View

@model Monet.Models.AgentRelationshipCodes


@using (Html.BeginCollectionItem("AgentRelationshipCodes")) @*Exception thrown here*@
{
    <tr>
        <td>@Html.EditorFor(model => model.EffectiveDate, "NullableDate", new { @class = "relCodeDate2" })</td>
        <td>@Html.EditorFor(model => model.RelationshipId, "NullableDate", new { @class = "relDistCode1", maxlength = 3 })</td>
        @Html.HiddenFor(model => model.ID)
        @Html.HiddenFor(model => model.RelCodeOrdinal)
    </tr>
}

查看

    <script>
    $(document).ready(function() {
        $(".addCode").click(function () {
                $.ajax({
                url: '@Url.Action("NewRelationshipCode", "AgentTransmission")',
                dataType: 'html',
                cache: false,
                success: function (html) {
                    console.log(html);
                    $("#Experiment > tbody").append(html);
                }
            })
        });
    });
    </script>
    .
    .
<fieldset>
    <legend>Relationship Codes</legend>
    <table id="Experiment">
        <thead>
            <tr>
                <th>Relationship Effective Date</th>
                <th>Relationship Dist Code</th>
            </tr>
        </thead>
        <tbody>
            @foreach (var item in Model.AgentRelationshipCodes)
            {
                @Html.Partial("AddRelationshipCodePartial", item)
            }
        </tbody>
    </table>
    <br/>
    <a href="javascript:void(0)" class ="addCode">Add Another</a>
</fieldset>

Controller

    [HandleProcessCorruptedStateExceptions]
    public ViewResult NewRelationshipCode()
    {
        return View("AddRelationshipCodePartial", new AgentRelationshipCodes());
    }

代理关系代码

namespace Monet.Models
{
    using System;
    using System.Collections.Generic;

    public partial class AgentRelationshipCodes
    {
        public int ID { get; set; }
        public int RelCodeOrdinal { get; set; }
        public string RelationshipId { get; set; }
        public Nullable<System.DateTime> EffectiveDate { get; set; }
        public System.DateTime LastChangeDate { get; set; }
        public string LastChangeId { get; set; }

        public virtual AgentTransmission AgentTransmission { get; set; }
    }
}

编辑

我已经能够让演示在我现在使用的解决方案之外的项目中运行，所以它显然与这个工作区中的一些 dll 有关。然而，现在我的薪水已经超过了我的薪水等级，因为我不确定如何调试这样的东西。以下是 WinDbg 在 Visual Studio 抛出 AccessViolationException 之前识别的异常。在抛出的异常之间有很多信息，如果有人需要，请告诉我。

*** WARNING: Unable to verify checksum for C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\d12f4fda3d1bfabf888342e96983e9a7\mscorlib.ni.dll
*** ERROR: Module load completed but symbols could not be loaded for C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\d12f4fda3d1bfabf888342e96983e9a7\mscorlib.ni.dll

*** WARNING: Unable to verify checksum for C:\Windows\assembly\NativeImages_v4.0.30319_32\System.Xaml\9d3572e8c3c314a0f12383d41e8bee78\System.Xaml.ni.dll
*** ERROR: Module load completed but symbols could not be loaded for C:\Windows\assembly\NativeImages_v4.0.30319_32\System.Xaml\9d3572e8c3c314a0f12383d41e8bee78\System.Xaml.ni.dll

*** WARNING: Unable to verify checksum for C:\Windows\assembly\NativeImages_v4.0.30319_32\Presentatio5ae0f00f#\8711b01d60a94d6ef6a02d7fd0578493\PresentationFramework.ni.dll
*** ERROR: Module load completed but symbols could not be loaded for C:\Windows\assembly\NativeImages_v4.0.30319_32\Presentatio5ae0f00f#\8711b01d60a94d6ef6a02d7fd0578493\PresentationFramework.ni.dll

*** WARNING: Unable to verify checksum for C:\Windows\assembly\NativeImages_v4.0.30319_32\WindowsBase\ac2e26bafa70e93b307087d7fe6b9dd2\WindowsBase.ni.dll
*** ERROR: Module load completed but symbols could not be loaded for C:\Windows\assembly\NativeImages_v4.0.30319_32\WindowsBase\ac2e26bafa70e93b307087d7fe6b9dd2\WindowsBase.ni.dll

*** WARNING: Unable to verify checksum for C:\Windows\assembly\NativeImages_v4.0.30319_32\Microsoft.V4e91a071#\207156ac71b58fb31310a2f78c3d0c44\Microsoft.VisualStudio.Web.Application.ni.dll
*** ERROR: Module load completed but symbols could not be loaded for C:\Windows\assembly\NativeImages_v4.0.30319_32\Microsoft.V4e91a071#\207156ac71b58fb31310a2f78c3d0c44\Microsoft.VisualStudio.Web.Application.ni.dll

更新

通过在项目的调试器菜单中选择“ native 代码”选项

我现在收到了一条稍微更详细的错误消息:

最后，按照下面的建议切换到 IIS Express，我仍然收到 AccessViolationException。这是我用来启用 IIS 进行调试的设置(在项目属性下)

这是错误信息

调用堆栈:

Answer 1

在我看来，你的工作比你需要的更努力。

首先，将 foreach 替换为 for 循环，将索引元素传递到编辑器模板中。这将建立您的模板上下文。

<fieldset>
    <legend>Relationship Codes</legend>
    <table id="Experiment">
        <thead>
            <tr>
                <th>Relationship Effective Date</th>
                <th>Relationship Dist Code</th>
            </tr>
        </thead>
        <tbody>
            @for (var i = 0; i < Model.AgentRelationshipCodes.Count(); i++)
            {
                @Html.EditorFor(model => model.AgentRelationshipCodes[i])
            }
        </tbody>
    </table>
    <br/>
    <a href="javascript:void(0)" class ="addCode">Add Another</a>
</fieldset>

然后创建一个名为 AgentRelationshipCodes.cshtml 的编辑器模板(在 Views/Shared/EditorTemplates 中)

@model Monet.Models.AgentRelationshipCodes
<tr>
    <td>@Html.EditorFor(model => model.EffectiveDate, "NullableDate", new { @class = "relCodeDate2" })</td>
    <td>@Html.EditorFor(model => model.RelationshipId, "NullableDate", new { @class = "relDistCode1", maxlength = 3 })</td>
    @Html.HiddenFor(model => model.ID)
    @Html.HiddenFor(model => model.RelCodeOrdinal)
</tr>

这消除了对似乎导致问题的自定义助手的需要。

最后，为了添加新元素 - 将字段集移动到部分:

<script>
    $(document).ready(function() {
       $(".addCode").click(function () {
            $('#fieldset').load('@Url.Action("NewRelationshipCode", "AgentTransmission")',$('#fieldset').closest('form').serialize());
       });
    });
</script>

<div id="fieldset">
   @Html.Partial("fieldset");
</div>

并从您的 NewRelationshipCode 操作方法返回字段集 View :

[HandleProcessCorruptedStateExceptions]
public ViewResult NewRelationshipCode(YourViewModel model)
{
    model.AgentRelationshipCodes.Add(new AgentRelationshipCodes());
    return View("fieldset", model);
}