C# 在.cs文件中使用正则表达式 - niuyy

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

posted on 2007-08-21 09:34 niuyy 阅读(1446) 评论(1) 收藏举报

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