.net前台截取固定长度超出显示字符

    public string cutstring(string str, int length)
    {
        int len = str.Length;
        string restr = str;
        if (len >= length)
        {
            restr = str.Substring(0, length) + "...";
        } return restr;
    }

截取的方法

前台绑定调用

   <asp:Label runat="server" ID="lblurl" Text='<%#am.substring(Eval("LogoUrl").ToString().Trim(), 22)%>'></asp:Label>