CODEWITHSUNDEEP
c#character-encodingasciicodepages
lakedoo
lakedoo

Reputation: 385

Extended ASCII in C#

I want to store some of the extended ascii characters into a dictionary for lookup but having little issue with getting the conversion.

The current method I have to store these characters works for all the non-graphical looking ascii characters 0x20 to 0xAF.

Current method:

private static void LoadAnsiTable()
{
    for (byte i = 0x20; i < 0xFE; i++)
    {
      AnsiLookup.Add(i, Convert.ToChar(i).ToString());
    }
}

but the 0xAF and on does not have the ░ ▒ ▓ │ ┤╡ ╢ etc it just has these funky letters.

Looking at this table http://www.asciitable.com/ for reference.

This works if I manually add it,

AnsiLookup.Add(0xB0, "░");

I would like to know how I can get those symbols captured in some kind of collection without having to manually add them all?

Upvotes: 3

Views: 14182

Answers (1)

Douglas
Douglas

Reputation: 54877

I assume your "Extended ASCII" is actually code page 437:

Encoding cp437 = Encoding.GetEncoding(437);
byte[] source = new byte[1];
for (byte i = 0x20; i < 0xFE; i++)
{
    source[0] = i;
    AnsiLookup.Add(i, cp437.GetString(source));
}

Beware that this code page is not natively supported by the .NET Framework, so it might not be available on all systems.

Upvotes: 9

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