.Net 通过反射的方式调用成员函数

helper.cs

public class Helper
{
  /// <summary>
  ///   Runs a method on a type, given its parameters. This is useful for calling private methods.
  /// </summary>
  /// <returns>The return value of the called method.</returns>
  public static object RunStaticMethod(System.Type t, string strMethod, object[] aobjParams, Type[] types) {
    BindingFlags eFlags = BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic;
    return RunMethod(t, strMethod, null, aobjParams, eFlags, types);
  }

  public static object RunInstanceMethod(System.Type t, string strMethod, object objInstance, object[] aobjParams, Type[] types) {
    BindingFlags eFlags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;
    return RunMethod(t, strMethod, objInstance, aobjParams, eFlags, types);
  }

  private static object RunMethod(System.Type t, string strMethod, object objInstance, object[] aobjParams,
    BindingFlags eFlags, Type[] types) {
    MethodInfo m;
    try {
      if (null == types) {
        m = t.GetMethod(strMethod, eFlags);
      } else {
        m = t.GetMethod(strMethod, eFlags, Type.DefaultBinder, types, null);
      }
      if (m == null) {
        throw new ArgumentException("There is no method '" + strMethod + "' for type '" + t.ToString() + "'.");
      }

      object objRet = m.Invoke(objInstance, aobjParams);
      return objRet;
    }
    catch {
      throw;
    }
  }
}