Problem with Substring() - ArgumentOutOfRangeException

Question

I have a repeater that displays data from my Projects table. There are projectId, name and description. I use Substring(1, 240) on description. But sometimes the string is s

Answer 1

Based on Jon Skeet's answer, I think it should be checking for null or else it's not exactly a safe method :)

public static string SafeSubstring(this string text, int start, int length)
{
    if (text == null) return null;      

    return text.Length <= start ? ""
        : text.Length - start <= length ? text.Substring(start)
        : text.Substring(start, length);
}