无法加载文件或程序集或其依赖项之一。该系统找不到指定的文件

我有这样的代码

public static Type ToType(XmlSerializableType xmlSerializableType)
{
  string func = "XmlSerialzationType.ToType";
  Type type = null;
  if (xmlSerializableType != null && xmlSerializableType.Name != string.Empty)
  {
    type = Type.GetType(xmlSerializableType.Name);
    if (type == null)
    {
      // May be a user defined class
      try
      {
        Assembly assembly = Assembly.Load(xmlSerializableType.AssemblyName);
        type = assembly.GetType(xmlSerializableType.Name);
      }
      catch (Exception ex)
      {
        TestDebug.DebugTraceSevere(func, "Exception " + ex.ToString());
      }
    }
  }
  return type;
}

我有一个名为“leaf”的基类和一个名为“roundedtree”的用户定义类 什么时候 'xmlSerializableType.Name'成为用户定义的类'_rounded_tree'，我第一次获得'程序集的值as _rounded_treeGOLD, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' a所以对于'type作为{Name =“_rounded_tree”FullName =“_rounded_tree”}'。但是保存后，如果我重新启动应用程序，我无法加载“程序集”的值，出现异常“无法加载文件或程序集“_rounded_treeGOLD，Version=0.0.0.0，Culture=neutral，PublicKeyToken=null”或其依赖项之一。系统找不到指定的文件。":"_rounded_treeGOLD，Version=0.0.0.0，Culture=neutral，PublicKeyToken=null' 并且返回类型变为 null 这不应该发生

对于基类“leaf”，没有问题，我将得到 xmlSerializedType.Name 作为“Root.Systemmodel.leaf”，并且“type”变为 {Name =“leaf”FullName =“Root.Systemmodel.leaf”} 程序集将是 Root.Systemmodel, Version =8.0.7.0，文化=中性，PublicKeyToken=83bd062a94e26d58 在这些情况下我该怎么办 这是一段将为用户定义的类生成程序集的代码

public Type CreateType()
      {
         string func = "ManagedClass.CreateType";

         // Create instances of AssemblyBuilder and ModuleBuilder for the new Type
         AppDomain myDomain = Thread.GetDomain();
         AssemblyName myAsmName = new AssemblyName();

         // Create the assembly name by appending the machine name to the typename.
         myAsmName.Name = this.TypeName + Environment.MachineName;
         // Define assembly that can be executed but not saved
         this.UserClassAssemblyBuilder = myDomain.DefineDynamicAssembly(myAsmName, AssemblyBuilderAccess.Run);
         // Create dynamic module with symbol information
         this.UserClassModuleBuilder = this.UserClassAssemblyBuilder.DefineDynamicModule("userdefinedmodule", true);

UPDATE

可能我的程序集是为用户定义的类创建的，但没有保存，这可能是我第一次没有遇到任何问题的原因，一旦我关闭应用程序，我将失去看到我的代码的人

// Define assembly that can be executed but not saved
         this.UserClassAssemblyBuilder = myDomain.DefineDynamicAssembly(myAsmName,

AssemblyBuilderAccess.Run);如何克服这种情况

UPDATE这里我的数据库是xml文件。当我检查基类叶子时，我可以看到该条目是<Name>Root.Systemmodel.WindowsSystem</Name><AssemblyName>Root.Systemmodel, Version=8.0.7.0, Culture=neutral, PublicKeyToken=83bd062a94e26d58</AssemblyName>在这种情况下，如果重新启动我的应用程序没有问题，但对于用户定义的类“roundedtree”xml 条目是<Name>_rounded_tree</Name> <AssemblyName>_rounded_treeGOLD, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null</AssemblyName>第一次没有问题，但如果我重新启动我的应用程序，我会遇到异常

发生这种情况是因为也许您要加载的程序集对同一目录或系统目录中不存在的另一个程序集的引用将所有程序集放在同一文件夹中 我刚刚复制粘贴了我的代码，但它很清楚

private string asmBase;
public Type[] GetAllTypeinAssembly(string assemblyName)
{
    asmBase = System.IO.Path.GetDirectoryName(assemblyName);

    AppDomain.CurrentDomain.AssemblyResolve += new ResolveEventHandler(CurrentDomain_AssemblyResolve);
    System.Reflection.Assembly asm = System.Reflection.Assembly.Load(System.IO.File.ReadAllBytes(assemblyName));//domain.Load(bt) ;// 

    return asm.GetTypes();
}


private Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
{
    //This handler is called only when the common language runtime tries to bind to the assembly and fails.

    //Retrieve the list of referenced assemblies in an array of AssemblyName.
    Assembly MyAssembly, objExecutingAssemblies;
    string strTempAssmbPath = "";
    objExecutingAssemblies = args.RequestingAssembly;
    AssemblyName[] arrReferencedAssmbNames = objExecutingAssemblies.GetReferencedAssemblies();

    //Loop through the array of referenced assembly names.
    foreach (AssemblyName strAssmbName in arrReferencedAssmbNames)
    {
        //Check for the assembly names that have raised the "AssemblyResolve" event.
        if (strAssmbName.FullName.Substring(0, strAssmbName.FullName.IndexOf(",")) == args.Name.Substring(0, args.Name.IndexOf(",")))
        {
            //Build the path of the assembly from where it has to be loaded.                
            strTempAssmbPath = asmBase + "\\" + args.Name.Substring(0, args.Name.IndexOf(",")) + ".dll";
            break;
        }

    }
    //Load the assembly from the specified path.                    
    MyAssembly = Assembly.LoadFrom(strTempAssmbPath);

    //Return the loaded assembly.
    return MyAssembly;
}