1

好吧，这里有点难住了，我不想再为此大发雷霆了，我想我会把它扔给这里所有聪明的人。

我将实体框架和 c# 用于 WinApp 解决方案，问题的核心是该死的东西在我的系统上运行良好，但在我部署它之后，它失败了。即使我在我的开发系统上安装部署的应用程序，它也会失败。我觉得这有点令人不安。

对于这个问题的坚果和大胆。用户执行搜索，我构建查询，通过 ExecuteStoreQuery 调用点击 SQL 并返回 SearchResult 对象的通用列表。

来电：

retVal = ctx.ExecuteStoreQuery<SearchResults>(sql).ToList();

备用调用也会产生相同的错误：

ObjectQuery<DbDataRecord> c = ctx.CreateQuery<DbDataRecord>(sql);

错误：

************** Exception Text **************
System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
   at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
   at System.Reflection.RuntimeModule.GetTypes()
   at System.Reflection.Assembly.GetTypes()
   at System.Data.Metadata.Edm.ObjectItemConventionAssemblyLoader.LoadTypesFromAssembly()
   at System.Data.Metadata.Edm.ObjectItemAssemblyLoader.Load()
   at System.Data.Metadata.Edm.AssemblyCache.LoadAssembly(Assembly assembly, Boolean loadReferencedAssemblies, ObjectItemLoadingSessionData loadingData)
   at System.Data.Metadata.Edm.AssemblyCache.LoadAssembly(Assembly assembly, Boolean loadReferencedAssemblies, ObjectItemLoadingSessionData loadingData)
   at System.Data.Metadata.Edm.AssemblyCache.LoadAssembly(Assembly assembly, Boolean loadReferencedAssemblies, ObjectItemLoadingSessionData loadingData)
   at System.Data.Metadata.Edm.AssemblyCache.LoadAssembly(Assembly assembly, Boolean loadReferencedAssemblies, ObjectItemLoadingSessionData loadingData)
   at System.Data.Metadata.Edm.AssemblyCache.LoadAssembly(Assembly assembly, Boolean loadReferencedAssemblies, KnownAssembliesSet knownAssemblies, EdmItemCollection edmItemCollection, Action`1 logLoadMessage, Object& loaderCookie, Dictionary`2& typesInLoading, List`1& errors)
   at System.Data.Metadata.Edm.ObjectItemCollection.LoadAssemblyFromCache(ObjectItemCollection objectItemCollection, Assembly assembly, Boolean loadReferencedAssemblies, EdmItemCollection edmItemCollection, Action`1 logLoadMessage)
   at System.Data.Metadata.Edm.MetadataWorkspace.ImplicitLoadAssemblyForType(Type type, Assembly callingAssembly)
   at System.Data.Objects.ObjectContext.ExecuteStoreQueryInternal[TElement](String commandText, String entitySetName, MergeOption mergeOption, Object[] parameters)
   at AMMCred.Data.Search.GetSearchResults(SearchTerms terms)
   at AMMCred.frmMain.openProviderInfoToolStripMenuItem_Click(Object sender, EventArgs e)
   at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
   at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
   at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
   at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
   at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
   at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
   at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
   at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ToolStrip.WndProc(Message& m)
   at System.Windows.Forms.ToolStripDropDown.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

SearchResults 是一个自定义对象，如下所示：

public class SearchResults : IEquatable<SearchResults>
{
    private Guid id = Guid.Empty;
    public Guid PROV_MPI_NO
    {
        get { return id; }
        set { id = value; }
    }
    private string iPA = "";
    public string IPA
    {
        get { return iPA; }
        set { iPA = value; }
    }
    private string firstName = "";
    public string FirstName
    {
        get { return firstName; }
        set { firstName = value; }
    }
    private string middleName = "";
    public string MI
    {
        get { return middleName; }
        set { middleName = value; }
    }
    private string lastName = "";
    public string LastName
    {
        get { return lastName; }
        set { lastName = value; }
    }
    private string license = "";
    public string License
    {
        get { return license; }
        set { license = value; }
    }
    private string provId = "";
    public string ProvId
    {
        get { return provId; }
        set { provId = value; }
    }
    /// <summary>
    /// Used to help identify duplicates in a collection
    /// </summary>
    /// <param name="other"></param>
    /// <returns></returns>
    public bool Equals(SearchResults other)
    {
        return (this.PROV_MPI_NO == other.PROV_MPI_NO && this.License == other.License);
    }
}

最后，这里是用于获取搜索结果的 SQL 的选择部分：

SELECT a.PROV_MPI_NO, b.COMPANY_ID AS IPA, a.FIRSTNAME,a.MI,a.LASTNAME, b.PROVID, c.LICENSE

问题似乎来自实体框架，因为它将 SQL 的结果绑定到自定义对象。我已经验证了自定义对象字段名称与 SQL 字段相同，以防万一，但它似乎并不重要。

我离开的时间快到了，我整个周末都会思考这个问题，所以我可能会不时回来回答任何人可能遇到的任何问题。

就像我说的那样，我现在完全被难住了，完全感谢任何人的洞察力。

提前致谢！

韦恩

更新 11/14/2011---------- 运行程序集绑定日志查看器工具并提出以下线索。看起来 Microsoft.Practices.Unity 没有加载。问题是，我从来没有在任何应用程序中引用过这些 Practices 程序集，但似乎 System.Data.Entity 确实......如图。这是一个线索......非常感谢有关这一新发展的任何信息。

*** Assembly Binder Log Entry  (11/14/2011 @ 3:10:52 PM) ***

The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.

Assembly manager loaded from:  C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
Running under executable  C:\Users\***me***\AppData\Local\Apps\2.0\1ND1AZ7G.HEJ\CWDQKK8A.LVO\ammc..tion_0000000000000000_0002.0000_456d6de62e1c40e4\AMMCred2.exe
--- A detailed error log follows. 

=== Pre-bind state information ===
LOG: User = ***me***
LOG: DisplayName = Microsoft.Practices.Unity, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
 (Fully-specified)
LOG: Appbase = file:///C:/Users/***me***/AppData/Local/Apps/2.0/1ND1AZ7G.HEJ/CWDQKK8A.LVO/ammc..tion_0000000000000000_0002.0000_456d6de62e1c40e4/
LOG: Initial PrivatePath = NULL
LOG: Dynamic Base = NULL
LOG: Cache Base = NULL
LOG: AppName = AMMCred2.exe
Calling assembly : Microsoft.Practices.EnterpriseLibrary.Common, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\Users\***me***\AppData\Local\Apps\2.0\1ND1AZ7G.HEJ\CWDQKK8A.LVO\ammc..tion_0000000000000000_0002.0000_456d6de62e1c40e4\AMMCred2.exe.config
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Post-policy reference: Microsoft.Practices.Unity, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
LOG: GAC Lookup was unsuccessful.
LOG: Attempting download of new URL file:///C:/Users/***me***/AppData/Local/Apps/2.0/1ND1AZ7G.HEJ/CWDQKK8A.LVO/ammc..tion_0000000000000000_0002.0000_456d6de62e1c40e4/Microsoft.Practices.Unity.DLL.
LOG: Attempting download of new URL file:///C:/Users/***me***/AppData/Local/Apps/2.0/1ND1AZ7G.HEJ/CWDQKK8A.LVO/ammc..tion_0000000000000000_0002.0000_456d6de62e1c40e4/Microsoft.Practices.Unity/Microsoft.Practices.Unity.DLL.
LOG: Attempting download of new URL file:///C:/Users/***me***/AppData/Local/Apps/2.0/1ND1AZ7G.HEJ/CWDQKK8A.LVO/ammc..tion_0000000000000000_0002.0000_456d6de62e1c40e4/Microsoft.Practices.Unity.EXE.
LOG: Attempting download of new URL file:///C:/Users/***me***/AppData/Local/Apps/2.0/1ND1AZ7G.HEJ/CWDQKK8A.LVO/ammc..tion_0000000000000000_0002.0000_456d6de62e1c40e4/Microsoft.Practices.Unity/Microsoft.Practices.Unity.EXE.
LOG: All probing URLs attempted and failed.
4

2 回答 2

1

该错误是加载异常。

由于这在开发中有效，但在部署的程序中无效，可能是由于未包含 dll。

进入您的 VS 项目，展开引用并检查每个 dll 的属性，确保未部署的 dll 的 copy local = true。

于 2011-11-13T20:35:47.790 回答
0

根据您的绑定结果，您似乎没有将 Microsoft.Practices.Unity.DLL 与您的应用程序一起部署。看起来这是从 Microsoft.Practices.EnterpriseLibrary.Common 引用的，这就是您没有直接引用的原因。

这是描述企业库具有的各种依赖项的 MSDN 文章。

更新

我刚刚使用 ildasm.exe (C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin) 检查了 System.Data.Entity 的直接依赖关系，它绝对没有引用企业库。如果有的话，我会感到非常惊讶，因为它们通常不会在系统 DLL 和可选产品 DLL 之间创建依赖关系（仅出于这个原因）。

您是否正在引入其他可能包含此内容的 DLL/引用？如果不确定，可以使用 ildasm.exe，导航到 DLL，然后打开它的清单。这有点难以阅读，但您正在寻找以下参考资料：

module extern 'System.Data.dll, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'

和

.assembly extern System.Data
于 2011-11-15T00:02:28.750 回答