如何从C＃代码将VB集合传递给函数？

Question

I have a dll that has a function which requires a couple variables of Type Microsoft.VisualBasic.Collection. But I tried passing them as An Arraylist and A List in C# to no avail.

  Severity  Code    Description Project File    Line    Suppression State
  Error CS1502  The best overloaded method match for 
 'Object.RptOptimizer.BuildReport(string, string, System.Guid, 
 Microsoft.VisualBasic.Collection, Microsoft.VisualBasic.Collection, string, 
 string, System.DateTime, System.DateTime, string, string, string, string, 
 string, int, bool, int, int, bool)' has some invalid arguments EPWeb4   
 C:\inetpub\wwwroot\EPWeb4\Forms\RptParamsOptimizer.aspx.cs 271 Active

 Severity   Code    Description Project File    Line    Suppression State
 Error  CS0012  The type 'Collection' is defined in an assembly that is not 
 referenced. You must add a reference to assembly 'Microsoft.VisualBasic, 
 Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.    

Answer 1

The Microsoft.VisualBasic.Collection implements ICollection and IList just like a number of standard BCL collections do.

static void Main(string[] args)
{
    Microsoft.VisualBasic.Collection c = new Microsoft.VisualBasic.Collection();

    c.Add(new { Id = 1, Name = "John"});
    c.Add(new { Id = 2, Name = "Mary" });

    DoSomething(c);

    Console.ReadLine();
}

public static void DoSomething(ICollection collection)
{
    foreach (dynamic v in collection)
    {
        Console.WriteLine($"{v.Id} - {v.Name}");
    }
}

From the error above, you're also missing an assembly reference to the Microsoft Visual Basic assembly from the references page in your C# Project.

Right click the Project > Add > Reference ... > Assemblies Tab > Scroll down to Microsoft.VisualBasic and tick to include it.