How to retrieve the methods from a dll?

[hbandarra]

How to retrieve the methods from a dll?

Can I retrieve them using the System.Reflection.Assembly? How?

Thanks!

[Cander]

yep

Imports System
Imports System.Reflection
 
Public Module DLLReport
    Public Sub Main(ByVal args() As String)
        LoadDLL(args(0))
    
    End Sub
    
    Public Sub LoadDLL(ByVal filename As String)
        Dim asm As [Assembly]     ' Assembly is reserved vb word so use the brackets to override
        Dim myClasses() As Type
        Dim myMethods() As MethodInfo
        Dim myEvents() As EventInfo
        Dim myProperties() As PropertyInfo
        Dim myParameters() As ParameterInfo
        
        Dim myTypes As Type
        Dim myMethodInfo As MethodInfo
        Dim myEventInfo As EventInfo
        Dim myPropertyInfo As PropertyInfo
        Dim myParameterInfo As ParameterInfo
        
        asm = [Assembly].LoadFrom(filename)
        If Not(asm Is Nothing) Then
            myClasses = asm.GetTypes()
        End If
        
        For Each myTypes In myClasses
            ' Output Classname
            Console.Writeline(myTypes.ToString())
            
            ' Lets get all methods(sub and function) from this class
            myMethods = myTypes.GetMethods()
            For Each myMethodInfo In myMethods
                Console.Writeline("---Method---" & myMethodInfo.Name & " Returns " & myMethodInfo.ReturnType.ToString())
                
                ' Now lets get the Parameters for this method
                myParameters = myMethodInfo.GetParameters()
                For Each myParameterInfo In myParameters
                    Console.WriteLine("    ---Parameter---" & myParameterInfo.Name & " As " & myParameterInfo.ParameterType.ToString()) 
                Next myParameterInfo
            Next myMethodInfo
            
            ' Lets get all events
            myEvents = myTypes.GetEvents()
            For Each myEventInfo In myEvents
                Console.Writeline("---Event---" & myEventInfo.Name)
            Next myEventInfo
            
            ' Lets get all properties
            myProperties = myTypes.GetProperties()          
            For Each myPropertyInfo In myProperties
                Console.Writeline("---Properties---" & myPropertyInfo.Name & " As " & myPropertyInfo.PropertyType.ToString())
            Next myPropertyInfo
        Next myTypes
    End Sub
End Module

[hbandarra]

What an excellent reply! Thank you very much, Cander!

[hbandarra]

BTW, is it possible to know the security settings of the methods declared with the [PrincipalPermissionAttribute()] ?

Thanks!

[Cander]

do you mean check if its public,private, friend, etc?

[hbandarra]

No this is about the System.Security of the .Net framework

I need to know wich username or role is the method expecting. Or, at least, to know if my Principal has the permissions that allow-me to execute the method safely (without having to call the method explicitly in search for an exception).

[Cander]

well I havnt really worked with Attributes much yet so I cant be 100%, but you may try looking into the MethodInfo objects Attributes property. Maybe that will provide some clue as since I dont know much about using Attributes, I wouldnt really be able to piece together what to do.

[hbandarra]

Well, I think that's not the way. At least I didn't found nothing...

I've made the question about reading the assembly methods on the c# forum. In fact, I've converted your code to c#. Do you mind if I publish that code with a reference to you and this thread on that forum?

Thanks!

[PT Exorcist]

search by my posts and reflection...cander some time ago posted a version of that code in C#

[Cander]

Actually I dont think I did this code in C#. I did the plug-in code orginally in C# and Edneeis ported that to VB.NET

But yeah hd..that is fine with me.