C#实现根据字节数截取字符串并加上省略号的方法

 原始字符串提取前endIdex个字节

 public static string GetSubString(string origStr, int endIndex) { if (origStr == null || origStr.Length == 0 || endIndex <0) return ""; int bytesCount = System.Text.Encoding.GetEncoding("gb2312").GetByteCount(origStr); if (bytesCount > endIndex) { int readyLength = 0; int byteLength; for (int i = 0; i  endIndex) { origStr = origStr.Substring(0, i) + "..."; break; } } } return origStr; }

 /// 按字节数截取字符串(不带省略号) ///  /// 原始字符串 /// 提取前endIdex个字节 ///  public static string GetSub1String(string origStr, int endIndex) { if (origStr == null || origStr.Length == 0 || endIndex <0) return ""; int bytesCount = System.Text.Encoding.GetEncoding("gb2312").GetByteCount(origStr); if (bytesCount > endIndex) { int readyLength = 0; int byteLength; for (int i = 0; i  endIndex) { origStr = origStr.Substring(0, i); break; } } } return origStr; }