title: cannot find the path to the resource file c#
body: <p>firstly apology if this has already been answered and I am duplicating the question. I have tried to find the answer to my issue but have failed and none of the auto-suggestions answers my problem.
  I have my main project (XAML) and also a class library project called FileStore for files. The class library project is referenced into the main project and I have images and icon file in the class library project that I can access with no issues in my main project, however, I struggle to get the content of a txt file from the CL project to display in a label on the main project. I get the error: the system could not find the file and from the error, I can see that it is trying to look for a file in the main project bin\debug folder</p>
  
  <p>I tried to follow this previous post which seemed to partly answer my issue but to no avail sadly.
  <a href="https://stackoverflow.com/questions/25419694/get-relative-file-path-in-a-class-library-project-that-is-being-referenced-by-a">Get relative file path in a class library project that is being referenced by a web project</a></p>
  
  <p>The txt file Build action is set to: Resource and Copy to Output Directory set to: Copy Always.
  As I mentioned I have the FileStore project referenced in my main project and the images work fine.
  Below is the code I am using, I have tried different variations such as:
  \Resources\textFile.txt and \textFile.txt, still no luck.
  '''</p>
  
  <pre><code>   public static string ReadFileinClLibr()
      {
          var buildDir = 
         Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
          var filePath = buildDir + @"\textFile.txt";
          return File.ReadAllText(filePath);
      }
  </code></pre>
  
  <p>'''
  For comparition here is the path for the image files that works, but I cannot get it to work with the txt file, as the error reads: the given paths format is not supported..
  '''</p>
  
  <pre><code>   @"pack://application:,,,/FileStore;component/Resources\textFile.txt"
  </code></pre>
  
  <p>'''
  I want to be able to input the content of the text file from the class library project to the label in the main xaml project.
  At the moment compiler keeps looking for this file in a debug folder of the main project, what I want is, for the compiler to look for the txt file in a CL FileStore project</p>