Microsoft.JScript.LateBinding.CallCOMObject C# (CSharp) Method

      private static Object CallCOMObject(IReflect ir, String name, Object ob, Binder binder, Object[] arguments,
                                          ParameterModifier[] modifiers, CultureInfo culture, String[] namedParameters,
                                          bool construct, bool brackets, VsaEngine engine){
        try{
          try{
            LateBinding.Change64bitIntegersToDouble(arguments);
            BindingFlags flags =
              BindingFlags.Public|BindingFlags.Instance|BindingFlags.Static|BindingFlags.OptionalParamBinding;
            if (construct)
              return ir.InvokeMember(name, flags|BindingFlags.CreateInstance, binder, ob, arguments, modifiers, culture, namedParameters);
            else if (brackets){
              // Expression like ob.name[args]. First try to invoke as an indexed property. If that
              // results in a ArgumentException, try to evaluate (ob.name) and then invoke
              // the default indexed property on the result.
              try {
                return ir.InvokeMember(name, flags|BindingFlags.GetProperty|BindingFlags.GetField, binder, ob, arguments, modifiers, culture, namedParameters);
              }catch(TargetInvocationException){
                Object ob1 = ir.InvokeMember(name, flags|BindingFlags.GetProperty|BindingFlags.GetField, binder, ob, new Object[0], modifiers, culture, new String[0]);
                return LateBinding.CallValue(ob1, arguments, construct, brackets, engine, ob1, binder, culture, namedParameters);
              }
            }else{
              int length = arguments == null ? 0 : arguments.Length;
              if (namedParameters != null && namedParameters.Length > 0 && (namedParameters[0].Equals("[DISPID=-613]") || namedParameters[0].Equals("this")))
                length--;
              flags |= length > 0
                ? BindingFlags.InvokeMethod | BindingFlags.GetProperty
                : BindingFlags.InvokeMethod;
              return ir.InvokeMember(name, flags, binder, ob, arguments, modifiers, culture, namedParameters);
            }
          }catch(MissingMemberException){
            if (brackets) //ob["x"]. Tried ob.Item()["x"] but failed. So return undefined.
              return null;
            else //ob("x"). Tried ob.Item()("x") but failed. Complain that ob is not a callable thing.
              throw new JScriptException(JSError.FunctionExpected);
          }catch(COMException e){
            int code = e.ErrorCode;
            if (((uint)code) == 0x80020006 || ((uint)code) == 0x80020003) //Unknown name or Member not found
              if (brackets)
                return null;
              else
                throw new JScriptException(JSError.FunctionExpected);
            if ((code & 0xFFFF0000) == 0x800A0000){
              String source = e.Source;
              if (source != null && source.IndexOf("JScript") != -1)
                throw new JScriptException(e, null);
            }
            throw e;
          }
        }catch(JScriptException e){
          if ((e.Number & 0xFFFF) == (int)JSError.FunctionExpected){
            //try to find a method on System.Object
            MemberInfo[] members = typeof(Object).GetMember(name, BindingFlags.Public|BindingFlags.Instance);
            if (members != null && members.Length > 0)
              return LateBinding.CallOneOfTheMembers(members, arguments, construct, ob, binder, culture, namedParameters, engine);
          }
          throw e;
        }
      }