页面代码:
1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="IsNumeric.aspx.cs" Inherits="IsNumeric" %>
2
3 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5 <html xmlns="http://www.w3.org/1999/xhtml" >
6 <head runat="server">
7 <title>无标题页</title>
8 </head>
9 <body>
10 <form id="form1" runat="server">
11 <div>
12 <asp:Label ID="Label1" runat="server" Text="正整数验证"></asp:Label>
13 <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
14 <asp:Button ID="Button1" runat="server" Text="正整数验证" OnClick="Button1_Click" />
15 <br />
16 <br />
17 <br />
18 <br />
19 <asp:Label ID="Label2" runat="server" Text="钱币验证"></asp:Label>
20 <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
21
22 <asp:Button ID="Button2" runat="server" Text="钱币验证" OnClick="Button2_Click" /></div>
23 </form>
24 </body>
25 </html>
后台代码:
1 using System;
2 using System.Data;
3 using System.Configuration;
4 using System.Collections;
5 using System.Web;
6 using System.Web.Security;
7 using System.Web.UI;
8 using System.Web.UI.WebControls;
9 using System.Web.UI.WebControls.WebParts;
10 using System.Web.UI.HtmlControls;
11 using System.Text.RegularExpressions;
12
13 public partial class IsNumeric : System.Web.UI.Page
14 {
15 protected void Page_Load(object sender, EventArgs e)
16 {
17
18 }
19
20 protected void Button1_Click(object sender, EventArgs e)
21 {
22 string value =TextBox1.Text;
23 bool Istrue = isNumeric(value);
24 if (Istrue)
25 {
26
27 Response.Write("<script language='javascript' type='text/javascript'> alert('你输入的数是整数！') </script>");
28 }
29 else
30 {
31 Response.Write("<script language='javascript' type='text/javascript'> alert('你输入的数不是整数！') </script>");
32 }
33
34 }
35 protected void Button2_Click(object sender, EventArgs e)
36 {
37 string value = TextBox2.Text;
38 bool Istrue = isMoney(value);
39 if (Istrue)
40 {
41
42 Response.Write("<script language='javascript' type='text/javascript'> alert('你输入的数是货币形式！') </script>");
43 }
44 else
45 {
46 Response.Write("<script language='javascript' type='text/javascript'> alert('你输入的数不是不是货币形式！') </script>");
47 }
48 }
49
50 private static bool isNumeric(string itemValue)
51 {
52 return (IsRegEx("^\\d+$", itemValue));//正整数
53
54 }
55 private static bool isMoney(string itemValue)
56 {
57 return (IsRegEx("^[0-9]+(\\.[0-9]{1,2})?$", itemValue));
58 }
59
60 private static bool IsRegEx(string regExValue, string itemValue)
61 {
62
63 try
64 {
65 Regex regex = new System.Text.RegularExpressions.Regex(regExValue);
66 if (regex.IsMatch(itemValue)) return true;
67 else return false;
68 }
69 catch (Exception)
70 {
71 return false;
72 }
73 finally
74 {
75 }
76 }
77
78 }
79
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