长数字字符串逗号分隔

页面代码：

 1 <form id="Form1" method="post" runat="server">
 2     <TABLE id="Table1" cellSpacing="1" cellPadding="1" width="300" border="1">
 3      <TR>
 4       <TD>
 5        <asp:TextBox id="TextBox1" runat="server"></asp:TextBox>
 6        <asp:Label id="Label1" runat="server"></asp:Label></TD>
 7      </TR>
 8      <TR>
 9       <TD align="center">
10        <asp:Button id="Button1" runat="server" Text="Button"></asp:Button></TD>
11      </TR>
12     </TABLE>
13   </form>

后台代码：

1 public string Money="";
2 private void Button1_Click(object sender, System.EventArgs e)
3   {
4    float str = float.Parse(TextBox1.Text);
5    NumberFormatInfo nfi = new CultureInfo( "en-US", false ).NumberFormat;
6    Money = "￥" + str.ToString("N",nfi);
7    Label1.Text = Money;
8   }

<注>用次方法需要应用命名空间 using System.Globalization;