/// <summary>/// 刪除字符串中的中文/// </summary>public static string Delete中文(string str){  string retValue = str;  if (System.Text.RegularExpressions.Regex.IsMatch(str, @"[/u4e00-/u9fa5]"))  {    retValue = string.Empty;    var strsStrings = str.ToCharArray();    for (int index = 0; index < strsStrings.Length; index++)    {      if (strsStrings[index] >= 0x4e00 && strsStrings[index] <= 0x9fa5)      {        continue;      }      retValue += strsStrings[index];    }  }  return retValue;}