/// <summary> /// 截取文本，區(qū)分中英文字符，中文算兩個(gè)長(zhǎng)度，英文算一個(gè)長(zhǎng)度/// </summary>/// <param name="str">待截取的字符串</param>/// <param name="length">需計(jì)算長(zhǎng)度的字符串</param>/// <returns>string</returns>public static string GetSubString(string str, int length){  string temp = str;  int j = 0;  int k = 0;  for (int i = 0; i < temp.Length; i++)  { if (Regex.IsMatch(temp.Substring(i, 1), @"[/u4e00-/u9fa5]+")) {   j += 2; } else {   j += 1; } if (j <= length) {   k += 1; } if (j > length) {   return temp.Substring(0, k) + ".."; }  }  return temp;}