Trim string from the end of a string in .NET - why is this missing?

Question

I need this all the time and am constantly frustrated that the Trim(), TrimStart() and TrimEnd() functions don\'t take strings as inputs. You call EndsWith() on a string, an

Answer 1

I knocked up this quick extension method.

Not positive it works (I can't test it right now), but the theory is sound.

    public static string RemoveLast(this string source, string value)
    {
        int index = source.LastIndexOf(value);
        return index != -1 ? source.Remove(index, value.Length) : source;
    }