IMethodCallMessage.cs

using System.Runtime.InteropServices;
using System.Security;

namespace System.Runtime.Remoting.Messaging
{
    [ComVisible(true)]
    public interface IMethodCallMessage : IMethodMessage, IMessage
    {
        int InArgCount
        {
            [SecurityCritical]
            get;
        }

        object[] InArgs
        {
            [SecurityCritical]
            get;
        }

        [SecurityCritical]
        string GetInArgName(int index);

        [SecurityCritical]
        object GetInArg(int argNum);
    }
}