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

TrimEnd() (and the other trim methods) accept characters to be trimmed, but not strings. If you really want a version that can trim whole strings then you could create an extension method. For example...

public static string TrimEnd(this string input, string suffixToRemove, StringComparison comparisonType = StringComparison.CurrentCulture)
{
    if (suffixToRemove != null && input.EndsWith(suffixToRemove, comparisonType)) 
    {
        return input.Substring(0, input.Length - suffixToRemove.Length);
    }

    return input;
}

This can then be called just like the built in methods.