调用C＃COM对象 [英] Calling C# COM object

问题描述

好吧，我创建了一个c＃dll，使其所有的接口和方法都是ComVisible（true）。使用gacutil将它添加到GAC，然后使用regasm注册它并创建一个类型库tlb文件。

现在我有另一个c＃项目，我想调用com对象，我该怎么做呢？

解决方案

第1步：创建一个
有两种方法

方法1：使用TlbImp生成RCW

  tlbimp< YourCOMSvr> .tlb /out:<YourCOMSvr>.dll 
  

使用这种方式使用默认的.NET-Interop Marshalling，有时（意味着当它不工作时）您需要通过执行附加步骤来更改编组

  ildasm< YourCOMSvr> .dll /out:<YourCOMSvr> ;.il 
 //修改< YourCOMSvr> .il 
方法2：手动创建一个C ++ / Cli项目作为一个用于创建C ++ / Cli项目的工具。 COM服务器的包装器
 
 
 
 步骤2：C＃代码 
 
 
 
 RCW并使用以下代码连接到COM服务器
 键入yourComType = Type.GetTypeFromProgID（yourComSvrProgID，serverPcName）; 
 var oInterface =（IYourCOMInterface）Activator.CreateInstance（yourComType）; 
 //然后开始使用oInterface 
  
 
Ok, I've created a c# dll, made all its interface and methods all ComVisible(true). Added it to the GAC using gacutil, then registered it using regasm and created a type library tlb file.

Now I have another c# project that I want to make calls to that com object, how can I do this? What would the code roughly look like to import the com object then use its calls?
解决方案
Step 1: Create a Runtime-Callable-Wrapper. 
There are two ways

Method 1: using TlbImp to Generate RCW
tlbimp <YourCOMSvr>.tlb /out:<YourCOMSvr>.dll
using this way is using the default .NET-Interop Marshalling, sometimes (Meaning when it does not work) you need to change the marshalling by perform the additional steps 
ildasm <YourCOMSvr>.dll /out:<YourCOMSvr>.il
//Modify <YourCOMSvr>.il 
ilasm <YourCOMSvr>.il /dll
Method 2: Manually create a C++/Cli project serves as a wrapper for the COM server 

Step 2: C# Code 

Reference the RCW and use the following code to connect to the COM Server
Type yourComType= Type.GetTypeFromProgID(yourComSvrProgID, serverPcName);
var oInterface = (IYourCOMInterface)Activator.CreateInstance(yourComType);
//Then start using oInterface 


                        
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