assembly method invoke

[san1907]

Assembly assembly = Assembly.LoadFrom(@"D:\Work\ex\project5stepwrapper.dll");
                foreach (Type Cls in assembly.GetTypes())
                {
                    if (Cls.IsInterface)
                        continue;
                    object instance = Activator.CreateInstance(Cls);
                    foreach (MethodInfo Method in Cls.GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly))
                        foreach (ParameterInfo pi1 in ((MethodInfo)Method).GetParameters())
                            string returnValue = (string)Method.Invoke(instance, new object[] { pi1 });
                  }

---------------------------------------------------------------
error message is comming :

Object of type 'System.Reflect ion.RuntimePara meterInfo' cannot be converted to type 'System.String& '.

any such solution to be appreciated and i shall be greatfull...... ..

[Frinavale]

Check out the ParameterInfo Class for an explanation on how to use it, complete with an example.

-Frinny

[san1907]

@san1907

Option Explicit
Private m_Street As String
 
Public Function GetNameBlank() As String
GetNameBlank = "Hello World"
End Function
 
Public Function GetName(SomeString As String) As String
GetName = SomeString
End Function
 
Public Property Let Street(ByVal strNewStreet As String)
If Len(strNewStreet) = 0 Then Err.Raise 5
m_Street = strNewStreet
End Property
 
Public Property Get Street() As String
Street = m_Street
End Property
 

---------------------------------------------------------------------------
this is the VB6.0 dll, name is : project5.dll
convert it in wrapper using regsvr32, sn -k and tlbimp, name is : project5wrapper .dll
---------------------------------------------------------------------------
then i wish to call this wrapper dynamically in .net in this way :
-------------------------------------------------------------------------

Assembly assembly = Assembly.LoadFrom(@"D:\Work\ex\project5stepwrapper .dll");
foreach (Type Cls in assembly.GetTypes())
{
  if (Cls.IsInterface)
    continue;
  object instance = Activator.CreateInstance(Cls);
  foreach (MethodInfo Method in Cls.GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly))
    if (String.Compare(Method.Name, "GetName", false) == 0)
    {
      var parameters = new List<object>();
      foreach (ParameterInfo pi1 in ((MethodInfo)Method).GetParameters())
      {
        if (pi1.ParameterType == typeof(string))
          parameters.Add("test");
      }
      object returnValue = Method.Invoke(instance, parameters.Count == 0 ? null : parameters.ToArray());
 
      if (returnValue != null)
        Trace.Assert(true, returnValue.ToString());
    }
}

------------------------------------------------------------------------------------
function GetNameBlank() and property Street are successfully invoke because they have no parameters
but when invoking GetName(), an error messege is coming
Object of type 'System.Reflect ion.RuntimePara meterInfo' cannot be converted to type 'System.String& '
-----------------------------------------------------------------------------------
if it solved then try to call this .net class library in vb6.0
--------------------------------------------------------------------------------------

[MrMancunian]

Did you even read what Frinavale handed you? Perhaps you could respond to that by telling us what you did with that information?

Steven

[san1907]

i have a COM type dll which developed in VB6.0 but i have no source code. my 90% project was developed in .net where 10% needed for completion. that's why 6 dll are required which are COM type and also each is dependent
ex. HTMLEvent.dll -> HTMLSupport.dll -> HTMLInterface.d ll

my ambition is
1) convert COM type dll(unmanaged) to .net (managed) which was called wrapper(using regsvr32, sn -k, tlbimp)
2) then the invoke all property and method signature in .net. if it is successfull
3) developed body of the method and property
3) delete the COM type dll and in which .net wrapper is added.

so .net wrapper/any other replace my COM type dll