Download multiple dlls from bin folder using reflection

Question

I am writing an application where I need a collection of all commandIds. They are present in several DLLs. I have access to the bin folder.

I used reflection and was able to do this for one DLL at a time

Assembly a = System.Reflection.Assembly.LoadFrom(@"T:\Bin\Commands.dll"); IEnumerable<Type> types = Helper.GetLoadableTypes(a); foreach (Type type in types) { FieldInfo ID = type.GetField("ID"); if (ID != null) { string fromValue = (ID.GetRawConstantValue().ToString()); ListFromCSFiles.Add(fromValue); } } 

My problem is that I need to get all identifiers from all DLLs. The Bin folder contains files other than DLLs.

Answer 1

It looks like you just need to iterate over the dlls in the directory.

You also need to make sure that you are not downloading an already downloaded assembly.

eg:

  string bin = "c:\YourBin"; DirectoryInfo oDirectoryInfo = new DirectoryInfo( bin ); //Check the directory exists if ( oDirectoryInfo.Exists ) { //Foreach Assembly with dll as the extension foreach ( FileInfo oFileInfo in oDirectoryInfo.GetFiles( "*.dll", SearchOption.AllDirectories ) ) { Assembly tempAssembly = null; //Before loading the assembly, check all current loaded assemblies in case talready loaded //has already been loaded as a reference to another assembly //Loading the assembly twice can cause major issues foreach ( Assembly loadedAssembly in AppDomain.CurrentDomain.GetAssemblies() ) { //Check the assembly is not dynamically generated as we are not interested in these if ( loadedAssembly.ManifestModule.GetType().Namespace != "System.Reflection.Emit" ) { //Get the loaded assembly filename string sLoadedFilename = loadedAssembly.CodeBase.Substring( loadedAssembly.CodeBase.LastIndexOf( '/' ) + 1 ); //If the filenames match, set the assembly to the one that is already loaded if ( sLoadedFilename.ToUpper() == oFileInfo.Name.ToUpper() ) { tempAssembly = loadedAssembly; break; } } } //If the assembly is not aleady loaded, load it manually if ( tempAssembly == null ) { tempAssembly = Assembly.LoadFile( oFileInfo.FullName ); } Assembly a = tempAssembly; } } 

Answer 2

Try to get all the catalog files using Directory.GetFiles . After that, according to http://msdn.microsoft.com/en-us/library/ms173100.aspx , define the assemblies and use your own method for each assembly.