【发布时间】：2011-11-12 00:32:46
【问题描述】：
好吧，这里有点难住了，我不想再为此烦恼，我想我会把它扔给这里所有聪明的人。
我正在使用 Entity Framework 和 c# 作为 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。
对于这个问题的疯狂和大胆。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。
电话：
retVal = ctx.ExecuteStoreQuery<SearchResults>(sql).ToList();
交替调用也会产生同样的错误：
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 select 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。
离我离开的时间太近了，我整个周末都在思考这个问题，所以我可能会不时回来回答任何人可能有的问题。
就像我说的那样，我现在完全被难住了，非常感谢任何人的洞察力。
提前致谢！
韦恩
2011 年 11 月 14 日更新---------- 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......非常感谢任何关于这个新开发的信息。
*** 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.
【问题讨论】：
-
如果您还没有打开融合日志记录，我建议您打开它。它正在寻找的特定程序集应该显示在日志文件中，这可能有助于弄清楚发生了什么。
-
我什至不知道有这样的东西存在。在此之后试一试：msdn.microsoft.com/en-us/library/e74a18c4%28v=VS.100%29.aspx - 空空如也。没啥事儿。也许我做错了什么，也许它不适用于已部署的 WinApp？没有把握。想法或想法？
-
您需要在有问题的系统上打开日志记录才能获得有意义的错误。我实际上已经看到了一些融合记录没有帮助的情况。在这种情况下，您需要更新异常处理以提取 LoaderExceptions。您还可以检查以确保最终用户的计算机安装了正确的 .Net 框架。
-
我想通了，必须在应用程序中放置一个路径才能写入日志文件，否则你什么也得不到……lol noob 错误。 :) 现在得到了更多信息......正在寻找放置它。
标签： c# sql-server-2008 entity-framework executestorequery