有没有办法在运行时设置类型的 GUID？

发布于 2024-10-16 09:33:52 字数 383 浏览 7 评论 0原文

如何动态设置类型的 Guid？

愚蠢的问题，但我有一个在多个第三方 COM 对象中完全相同的接口，但每个对象都有不同的 GUID。

我有一个看起来像这样的 C# 界面。

[Guid("1F13D3D8-3071-4125-8011-900D2EAC9A7F")]
[InterfaceType(2)]
[TypeLibType(4240)]
public interface UICtrl
{
  //stuff
}

我希望能够在运行时根据用户选择加载的 COM 对象动态更改 GUID。我无法更改元数据，并且 Type.Guid 没有设置属性。有什么想法吗？

我无法使用 Remit.Emit，因为调用程序集不使用它。我真的被困住了！

原文

How can I set a type's Guid dynamically?

Silly question, but I have an interface that is the exact same across several third-party COM Objects, but has a different GUID in each.

I have a C# interface that looks like so.

[Guid("1F13D3D8-3071-4125-8011-900D2EAC9A7F")]
[InterfaceType(2)]
[TypeLibType(4240)]
public interface UICtrl
{
  //stuff
}

I want to be able to change the GUID dynamically at run time depending on which COM object the user chooses to load. I can't change the meta data, and Type.Guid has no set property. Any ideas?

I can't use Remit.Emit because the calling assembly doesn't use it. I'm really stuck!

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过期以后 2024-10-23 09:33:52

所以我最终通过使用@SLaks 的答案和我自己的答案来解决这个问题。基本上，我获取了我的父界面并从中生成了一个具有我想要的 GUID 的子界面。

AssemblyName aName = new AssemblyName("MulticasterAssembly");
            AssemblyBuilder ab = AppDomain.CurrentDomain.DefineDynamicAssembly(aName, AssemblyBuilderAccess.Run);
            ModuleBuilder mb = ab.DefineDynamicModule("MulticasterModule");
            TypeBuilder tb = mb.DefineType("MainOCXMultiCaster", TypeAttributes.Public);
            tb.SetParent(typeof(AxUICtrlEventMulticaster));

            ConstructorInfo cInfo = typeof(GuidAttribute).GetConstructor(new Type[] {typeof(string)});
            CustomAttributeBuilder cab = new CustomAttributeBuilder(cInfo, new object[] { mOCXType.GUID.ToString() });
            tb.SetCustomAttribute(cab);

            ConstructorBuilder cb = tb.DefineDefaultConstructor(MethodAttributes.Public);

            Type childEventMulticaster = tb.CreateType();                

            object o = Activator.CreateInstance(childEventMulticaster);
            childEventMulticaster.InvokeMember("host", BindingFlags.SetProperty, null, o, new object[] { this });

So I ended up fixing this by using a part of @SLaks's answer and my own. Basically I took my parent interface and generated a child interface from it which had the GUID I wanted.

AssemblyName aName = new AssemblyName("MulticasterAssembly");
            AssemblyBuilder ab = AppDomain.CurrentDomain.DefineDynamicAssembly(aName, AssemblyBuilderAccess.Run);
            ModuleBuilder mb = ab.DefineDynamicModule("MulticasterModule");
            TypeBuilder tb = mb.DefineType("MainOCXMultiCaster", TypeAttributes.Public);
            tb.SetParent(typeof(AxUICtrlEventMulticaster));

            ConstructorInfo cInfo = typeof(GuidAttribute).GetConstructor(new Type[] {typeof(string)});
            CustomAttributeBuilder cab = new CustomAttributeBuilder(cInfo, new object[] { mOCXType.GUID.ToString() });
            tb.SetCustomAttribute(cab);

            ConstructorBuilder cb = tb.DefineDefaultConstructor(MethodAttributes.Public);

            Type childEventMulticaster = tb.CreateType();                

            object o = Activator.CreateInstance(childEventMulticaster);
            childEventMulticaster.InvokeMember("host", BindingFlags.SetProperty, null, o, new object[] { this });

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