C# – Regular Expression Contain Chinese Word

C# – Regular Expression Contain Chinese Word

using System.Text;   using System.Text.RegularExpressions;   using System;     private bool IsEnglish(string value)   {     var chinese = @"[\u4e00-\u9fa5]";     var regex = new Regex(chinese);       if (value != null)     {       if (regex.IsMatch(value.ToString()))         return false;       else         return true;     }     else     {       return true;     }   }