Unable to convert special characters in UTF-8 file into ANSI

Question

I have a file that needs to be read and a text has to be added at the end. The program failed due to character "í" . On opening the file in notepad++ (UTF-8) encoding, I could see

In my C# code I tried to convert it to Default encoding, but the application changes it to "?" instead of "í".

Sample code:

string processFilePath = @"D:\Test\File1.txt";
string outfile = @"D:\Test\File2.txt";

using (StreamReader reader = new StreamReader(processFilePath))
{
    using (StreamWriter writer = new StreamWriter(outfile, false, Encoding.Default))
    {
        writer.WriteLine(reader.ReadToEnd());
    }
}

                

I looked into similar questions on SO (above code snipped was the modified version from here): UTF-8 to ANSI Conversion using C#

I tried different types of encoding available in the "System.Text.Encoding" - ASCII/ UTF*/ Default but the best I could get is a "?" instead of "í".

I had also gone through : http://kunststube.net/encoding/ , I did learn a lot, but was still unable to resolve the issue.

What I am getting:

What I need:

On Microsoft website:

What else am I missing (Should have been easy if System.Text.Encoding.ANSI existed )

Answer 1

MSDN:

StreamReader defaults to UTF-8 encoding unless specified otherwise, instead of defaulting to the ANSI code page for the current system.

i.e. when opening StreamReader(processFilePath) it takes data as in UTF-8, which seems not the case, i.e. if the source text is ANSI, or most likely Windows-1252 for Spanish, use

using (StreamReader reader = new StreamReader(processFilePath, Encoding.GetEncoding(1252)))
{
    using (StreamWriter writer = new StreamWriter(outfile, false, Encoding.UTF8))
    {
        writer.WriteLine(reader.ReadToEnd());
    }
} 

Note specified 1252 and UTF8.

P.S. Also note that false in StreamWriter will not append to the end, but overwrite.