c# string collection methods, early work

gistfile1.cs

public static class StringExtensions
{
    public static string Truncate(this string value, int maxLength) {
        if (!string.IsNullOrEmpty(value) && value.Length > maxLength) {
            return value.Substring(0, maxLength);
        }
 
        return value;
    }
	
	public static string SeoCleanString(this string input)
     {
            if (!string.IsNullOrEmpty(input))
            {
                input = input.Replace(' ', '-');
                return Regex.Replace(input, @"[^A-Za-z0-9\-\s]", "");
 
            }
 
            return "";
        }
}