c# - 将字符串数组从 VB6 传递到 C#.net

Question

如何通过 COM Interop 将 VB6 字符串数组 [Assume, s =Array("a", "b", "c", "d")] 传递给 C# .Net？

我尝试实现将 C# 字符串数组传递给 VB 并将 VB 字符串数组传递给 C#，如下所示 C#->VB 工作正常，但其他方式 (VB=>C#) 给出编译错误，称为

Function or interface marked as restricted, or the function uses an automation type not supported in visual basic

下面是我的代码

C#

public interface ITest   
{ 
     string[] GetArray();
     void SetArray(string[] arrayVal );
}

public class Test : ITest 
{
    string[] ITest.GetArray() {                                //Working fine
        string[] stringArray = { "red ", "yellow", "blue" };
        return stringArray;
    }
}

void ITest.SetArray(string[] arrayVal) //Giving an issue
{
   string[] stringArray1 = arrayVal;
}

VB

Dim str As Variant

Debug.Print ".NET server returned: "    
For Each str In dotNETServer.GetArray      'dotNETServer=TestServer.Test
    Debug.Print str
Next

Dim arr(3) As String
arr(1) = "Pahee"
arr(2) = "Tharani"
arr(3) = "Rathan"

dotNETServer.SetArray (arr) 'This one causing the compile error which I mentioned earlier

更新:::::::

We need to pass the array as reference in C# .在接口(interface)和方法上改

void SetArray(ref string[] arrayVal ); //ref added

Answer 1

编码到适当的类型将解决您的问题。注意下面的编码和 ref 关键字更改

void ITest.SetArray([MarshalAs(UnmanagedType.SafeArray, SafeArraySubType=VT_BSTR)] ref string[] arrayVal)
{
   string[] stringArray1 = arrayVal;
}

我根据您的代码和您无法从 VB6 获取数据的问题制定了此解决方案。如果上述解决方案对您不起作用，请尝试在此处找到适合您的应用程序的数组类型/子类型 http://msdn.microsoft.com/en-us/library/z6cfh6e6(v=vs.110).aspx