StreamReader to find specific text and rewrite file

[Netman06]

Hello,

I'm trying to find the best way to read and then find specific text within file and then remove it, using StreamWriter.

I have already created the StreamReader, but now need to find out the best way to find : with the file and remove it, then rewrite file.

Thanks,

Mike

 

[Netman06]

I might be able to use stringbuilder, if I know that my file will always have the : on the forth line, can I only replace it with a blank line, and not other lines that contain :, because the another lines have the word cn:, which is correct and not a line that starts with :

static string MinifyB(string p)
{
StringBuilder b = new StringBuilder(p);
b.Replace(" ", string.Empty);
b.Replace(Environment.NewLine, string.Empty);
b.Replace("\\t", string.Empty);
b.Replace(" {", "{");
b.Replace(" :", ":");
b.Replace(": ", ":");
b.Replace(", ", ",");
b.Replace("; ", ";");
b.Replace(";}", "}");
return b.ToString();
}
Thanks,

Mike