Question

public sealed class SurrogateSelector : System.Runtime.Serialization.SurrogateSelector, System.Runtime.Serialization.ISurrogateSelector
{
    System.Runtime.Serialization.ISerializationSurrogate ISS = System.Runtime.Serialization.FormatterServices.GetSurrogateForCyclicalReference(new SerializationSurrogate());
    public SurrogateSelector()
    {
        foreach (Type t in typeof(NameSpace.ASampleClass).Assembly.GetTypes())
        {
            if (t.Namespace == "NameSpace")
                this.AddSurrogate(t, new System.Runtime.Serialization.StreamingContext(System.Runtime.Serialization.StreamingContextStates.All), ISS);
        }
    }
}

{System.Reflection.ReflectionTypeLoadException：无法加载一个或多个要求的类型。检索 LoaderExceptions属性更多信息。在 System.Reflection.Module._GetTypesInternal（StackCrawlMark＆安培; stackMark）at System.Reflection.Assembly.GetTypes（）在NameSpace.SurrogateSelector..ctor（）在 d：\项目\ Esfand \ Esfand \ classname.cs：行 2661}

Answer 1

确保正确定义所有外部。如果CLR找不到您定义的外部方法的实现，CLR将无法加载类型。

例如，如果您定义类似的方法，

public static extern IntPtr SendMessage(IntPtr w, uint m, IntPtr p1, IntPtr p2);

确保您使用[DllImport("user32.dll")]。每个TypeLoadException都应告诉找不到实现的方法。

TypeLoadException是如何发生的？

1 个答案: