namespace MySystem
{
    public static class StringExtension
    {
        #region sql条件拼装
        public static string Like(this string input, string Field, string Value) 
        {
            if (!string.IsNullOrEmpty(Value))
            {
                input += " and " + Field + " like '%" + Value + "%'";
            }
            return input;
        }
        #endregion
    }
}