GetManifestResourceStream returns NULL

Question

This is a C# .NET 4.0 application:

I\'m embedding a text file as a resource and then trying to display it in a dialog box:

    var assembly = Assembl         


        

Answer 1

Although OP got GetManifestResourceStream returning NULL from resources in the same Assembly, some Answers suggested that when Resources are in another Project or Assembly they cannot be retrieved, and are a fair cause of GetManifestResourceStream returning NULL.

This is not true, at least since 2011; as I pointed in some comments elsewhere, Assembly.LoadFrom() or typeof do the trick and as a result you can access resources that are in another project.

I have a moderately complex example here to illustrate; this is my test setup:

Path to another project:

Captured here:

 var sharedXMLResource =
                "D:\\My Documents\\Consultório Impressos\\DB Pacientes\\Teste\\TestesVariados\\WinFormFramework\\Read_Embedded_XML_File_CS\\bin\\Debug\\Read_Embedded_XML_File_CS.exe";

And on Form1.cs from WinFormFramework I specify with

Namespace.Folder.Resource

like that:

StreamReader reader = 
                new StreamReader(Assembly.LoadFrom(sharedXMLResource).GetManifestResourceStream("Read_Embedded_XML_File_CS.SharedResources.ContactList.xml") ?? throw new InvalidOperationException());

And the result displayed at textbox:

I spent several hours to get it right; for that, I had to use a lot these at Immediate Window:

Environment.CurrentDirectory
AppDomain.CurrentDomain.BaseDirectory
System.Reflection.Assembly.GetExecutingAssembly().Location
System.Reflection.Assembly.GetAssembly(typeof(WinFormFramework.Program)).Location

Hope it helps someone