How can I extract a file from an embedded resource and save it to disk?

I’d suggest doing it easier. I assume that the resource exists and the file is writable (this might be an issue if we’re speaking about system directories).

public void WriteResourceToFile(string resourceName, string fileName)
{
    using(var resource = Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName))
    {
        using(var file = new FileStream(fileName, FileMode.Create, FileAccess.Write))
        {
            resource.CopyTo(file);
        } 
    }
}

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