C# assembly

18y4.3kVisual Basic .NET

Hi. I have a c# assembly called test.dll, it has some entrypoints marked by[CustomAction]. How do i search the file and find the various entrypoints?

Example:

[CustomAction]
private void CA1()
{
}

How do I get CA1 returned?

3 Replies

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Alan18y ago
Accepted answer
Reflection is your friend:

using System;
using System.Reflection;

class Program
{
    static void Main()
    {
       Assembly asm = Assembly.LoadFrom("test.dll");
       Type[] types = asm.GetTypes();
       BindingFlags bf = BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic;
       Console.WriteLine("The following methods are decorated with CustomAction: \n");

       foreach(Type t in types)
       {
          MethodInfo[] mia = t.GetMethods(bf);
          foreach(MethodInfo mi in mia)
          {
             object[] attribs = mi.GetCustomAttributes(false);
             if (attribs.Length > 0)
             {
                 foreach(object attrib in attribs)
                 {
                   if (attrib.ToString() == "CustomActionAttribute")
                   {
                     Console.WriteLine("{0}.{1}", t, mi.Name);
                   }
                 }
             }
          }
       }
    }
}
+1
Alan18y ago
TBH, Peter, I don't understand why that doesn't work but when I googled to see whether the problem had been reported before I came up with this:

http://www.csharphelp.com/board2/read.html?f=1&i=52158&t=52158

So, this suggests that if you map a drive letter to the network drive, it will work OK.
+1
Peter18y ago
I tried this and it worked perfectly.

Except now I moved the dll on to a network drive, and now

object[] attribs = mi.GetCustomAttributes(false);

does not work as it used to. attribs is not filled with [0] = {Microsoft.Deployment.WindowsInstaller.CustomActionAttribute} like it is when the dll is on a local drive...

I have no clue why...
Any suggestions?

Best regards

Peter

+1