.NET截取指定长度汉字超出部分以"..."代替

代码
/// <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;
}

 简单方法

  //截取字符串函数

        protected string PartSubString(string s)

        {

            if (s.Length > 5)

            {

                return s.Substring(0, 5) + "...";

            }

            return s;

        }

 

调用

 <asp:Label ID="Label22" runat="server" Text='<%# PartSubString(DataBinder.Eval(Container.DataItem,"Note").ToString()) %>'
                                                        ToolTip='<%# Bind("Note") %>'></asp:Label>

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