ResourceReader Cannot Read Resource File

[zeus82]

We are in the process of migrating an application from the .NET Framework to .NET Core 2, but it looks like the ResourceReader cannot process a valid resx file.

When I create the ResourceReader I get

System.ArgumentException: Stream is not a valid resource file.
   at System.Resources.ResourceReader._ReadResources()
   at System.Resources.ResourceReader.ReadResources()
   at System.Resources.ResourceReader..ctor(String fileName)

Here is a gist to the contents of the resx file.

[danmoseley]

That should certainly work. Could you share a code snippet?

[zeus82]

Here's how I'm using it:

        public IEnumerable<Tuple<string, string>> Parse(string fileName)
        {
            var results = new List<Tuple<string, string>>();

            fileName = Path.GetFullPath(fileName);

            if (!string.IsNullOrWhiteSpace(Path.GetDirectoryName(fileName)))
                Directory.SetCurrentDirectory(Path.GetDirectoryName(fileName));
            using (var reader = new ResourceReader(fileName)) // This blows up
            {
                foreach (DictionaryEntry pair in reader)
                {
                    results.Add(new Tuple<string, string>(pair.Key as string, pair.Value as string));
                }
            }
            return results;
        }

[jkotas]

ResourceReader is for reading .resources files. .resources files are binary compiled files.

ResourceReader is not for reading .resx files. .resx files are xml source files. You need to use GenerateResource build task to compile .resx file into .resources files. Typically, you do not need to call this build task explicitly - it gets called implicitly by just having the .resx file in your solution.

This is same between .NET Core and .NET Framework.