뚱2's Story

// class
public class MyObject
{
    pub int Connect()
    {
        // 접속 ...
    }
    public void GetLastError(out int errorCode, out string errorMessage)
    {
        // 내부 코드들 ...
    }
}

    // ErrorUtil
    public class ErrorUtil
    {
        private static readonly string methodName = "GetLastError";
        private static int errorCode = 0;
        private static string errorMessage = "";

        public static int ErrorCode
        {
            get { return errorCode; }
        }

        public static string ErrorMessage
        {
            get { return errorMessage; }
        }

        public static bool GetLastError(object obj)
        {
            try
            {
                Type t = obj.GetType();
                MethodInfo info = t.GetMethod(
                    ErrorUtil.methodName,
                    BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance,
                    null,
                    new[] 
                    {
                        typeof(int).MakeByRefType(),
                        typeof(string).MakeByRefType()
                    },
                    null
                );

                if (info != null)
                {
                    object[] parameters = new object[2];
                    info.Invoke(obj, parameters);

                    errorCode = (int)parameters[0];
                    errorMessage = (string)parameters[1];
                    return true;
                }
                else
                {
                    errorMessage = String.Format("{0} 메소드를 찾을수 없거나, 파라미터가 정확하지 않습니다.", ErrorUtil.methodName);
                    return false;
                }
            }
            catch (Exception ex)
            {
                errorMessage = ex.Message;
                return false;
            }
        }
    }

// 사용예
    MyObject oCommpany = new MyObject();
    int retCode = oCompany.Connect();
    if (retCode != 0)
    {
           ErrorUtil.GetLastError(oCompany);
           MessageBox.Show(ErrorUtil.ErrorMessage);
    }