How to make relative path work with streamreader

[lightwalker19]

Hello world! I've got a problem... im using a streamreader to read the text lines, but when i call the location of the text file it says:"Could not find a part of the path 'C:\Program Files (x86)\Common Files\Microsoft Shared\DevServer\10.0\~\IDS\Lang\1.txt'." But i have a hyperlink with the same relative path, and it works :/ What am i doing wrong? i need this to work in a server in the future..

 
StreamReader reader = new StreamReader(@"~/IDS/Lang/1.txt");          
string strAllFile=reader.ReadToEnd().Replace("\r\n","\n").Replace("\n\r","\n");
string[] arrLines = strAllFile.Split(new char[] { '\n' });
TextBox35.Text = arrLines[0] + arrLines[1] + arrLines[2];
            reader.Close(); 

[lightwalker19]

Found the solution, so simple it hurts xD

 StreamReader reader = new StreamReader(Server.MapPath(@"~/IDS/Lang/1.txt"));