Reading txt with Streamreader

Question

When reading a TXT file, of accounting releases exporting by a third party system, being my problem in the lines that have the Nº.

VLR REF SOMETHING NO 1834 MORE TEXT

Using the class StreamReader as follows

using (var reader = new StreamReader(@"D:\Projetos\Syns\Documentação\Contabilidade\exemplo.txt"))
{
    string actual = reader.ReadToEnd();
    Assert.AreEqual("VLR REF ALGUMA COISA Nº 1834 MAIS TEXTO", actual);
}

What I have as a return in current string is

VLR REF SOMETHING N?? 1834 MORE TEXT

and need to return the value equal to the text file.

What kind of enconding I have to use in this situation?

Answer 1

The most common is UTF8, but you can also try with ANSI

using (var reader = new StreamReader(@"D:\Projetos\Syns\Documentação\Contabilidade\exemplo.txt", System.Text.Encoding.UTF8))
{
     string actual = reader.ReadToEnd();
     Assert.AreEqual("VLR REF ALGUMA COISA Nº 1834 MAIS TEXTO", actual);
}

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EDIT: As seen in the comments, by @Rovannlinhalis Enconding.Default was the solution to the problem.