.NET截取指定长度汉字超出部分以"..."代替

 

/// <summary> 
 /// 将指定字符串按指定长度进行剪切， 
 /// </summary> 
 /// <param name= "oldStr "> 需要截断的字符串 </param> 
 /// <param name= "maxLength "> 字符串的最大长度 </param> 
 /// <param name= "endWith "> 超过长度的后缀 </param> 
 /// <returns> 如果超过长度，返回截断后的新字符串加上后缀，否则，返回原字符串 </returns> 
 public static string StringTruncat(string oldStr, int maxLength, string endWith) 
 { 
 if (string.IsNullOrEmpty(oldStr)) 
 // throw new NullReferenceException( "原字符串不能为空 "); 
 return oldStr + endWith; 
 if (maxLength < 1) 
 throw new Exception("返回的字符串长度必须大于[0] "); 
 if (oldStr.Length > maxLength) 
 { 
 string strTmp = oldStr.Substring(0, maxLength); 
 if (string.IsNullOrEmpty(endWith)) 
 return strTmp; 
 else 
 return strTmp + endWith; 
 } 
 return oldStr; 
 }