C# - IsolatedStorageFileStream Extension - WriteLines, ReadLines

IsolatedStorageFileStreamExtension.cs

// It will probably work in other streams.

public static class IsolatedFileStreamExtension
{		
	public static IEnumerable<string> ReadLines(this IsolatedStorageFileStream File)
	{
        char separator = char.MaxValue;
        System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
        List<string> Strings = new List<string>();

        string contents;
        byte[] bytes= new byte[File.Length];
        string line = "";
        int NewlineIndex;

        File.Read(bytes, 0, (int)File.Length);
        contents = new string(encoding.GetChars(bytes));

        while ((NewlineIndex = contents.IndexOf(separator)) != -1)
        {
            line = contents.Substring(0, NewlineIndex);
            contents = contents.Substring(NewlineIndex + 1);
            yield return line;
        }
    }
		
	public static string ReadLine(this IsolatedStorageFileStream File)
	{
		IEnumerable<string> Lines = File.ReadLines();
		if(Lines != null && Lines.Count() != 0)
			return Lines.First();
        return "";
	}
		
	public static void WriteLines(this IsolatedStorageFileStream File, IEnumerable<string> Lines)
	{
		char separator = char.MaxValue;
        System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();

        string contents = "";
        byte[] bytes;

        foreach (var str in Lines)
            contents += str + separator;

        bytes = encoding.GetBytes(contents);
        File.Write(bytes, 0, bytes.Length);
    }
    	
    public static void WriteLine(this IsolatedStorageFileStream File, string Line)
    {
    	List<string> Lines = new List<string>();
    	Lines.Add(Line);
    	File.WriteLines(Lines);
    }
}