C# assembly

Question

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?

Alan · 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: 
"); 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); } } } } } } }

Alan · Answer

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.

Peter · Answer

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

C# assembly

Answers (3)