DataList 限制IP地址顯示長度

cs 頁

public string CutString1(string str, int length)
    {
        int i = 0, j = 0;
        foreach (char chr in str)
        {
            if ((int)chr > 127)
            {
                i += 2;
            }
            else
            {
                i++;
            }
            if (i > length)
            {
                str = str.Substring(0, j) + "*";
                break;
            }
            j++;
        }
        return str;

    } 

綁頂頁<asp:DataList ID="DataList1" runat="server" RepeatColumns="13"  CellPadding="0">
            <ItemTemplate>               
                <table>
                    <tr>
                        <td background="@" style="width: 100px">
                            <asp:Label ID="Label1" runat="server" Text='<%# String.Format("{0:f}", DataBinder.Eval(Container.DataItem, "User_Name")) %>' ></asp:Label>
                             <asp:Label ID="Label3" runat="server" Text='<%# CutString1(DataBinder.Eval(Container.DataItem,"User_Ip").ToString(),8) %>' ></asp:Label>
                         </td>
                    </tr>                  
                </table>
            </ItemTemplate>
        </asp:DataList>