ANSI Encoding Issue

Question

I was reading a file using the below code The file is in ANSI encode

string strReadTheWholeFile = 
    File.ReadAllText(txtFilePath.Text.ToString(),Encoding.GetEncoding(1250));

Once read and fetched into a string i use the below code to replace a string in the file

strReadTheWholeFile = strReadTheWholeFile.Replace(
    "PortableSpecFileVersion=5.0;", ":ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ:");

Once replaced i save back the file using the below code

File.WriteAllText(@"C:\MK\Converted\" + Path.GetFileName(txtFilePath.Text.ToString()),
    strReadTheWholeFile, Encoding.GetEncoding(1250));

Once saved i open the file to see whether the changes have been committed or not but what i found is that the string is replaced but its been replaced wrong

Original String:

PortableSpecFileVersion=5.0;ConversionName=GSKPrePayValidation;

Replaced String:

:yyyyyyyyyyyyyyyyyyyyyyyyyyyy:ConversionName=GSKPrePayValidation;

As you can see the i wanted to replace it with "ÿ" but instead it was replaced by "y" Can any one suggest what i am doing wrong

Answer 1

ÿ does not exist in the codepage you're reading and writing, so it gets replaced. It does seem to exist in 1252, though.

Answer 2

According to the reference page on MSDN, the ÿ character does not exist in that set.

You could use an encoding that you know could handle it, like UTF8: (tested, works)

File.WriteAllText(@"C:\MK\Converted\" + Path.GetFileName(txtFilePath.Text.ToString()),
                  strReadTheWholeFile, Encoding.UTF8);