aspx网页代码
1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="upload.aspx.cs" Inherits="upload" %>
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 <script language="javascript" type="text/javascript">
9 function preview(imageurl)
10 {
11 document.getElementById("Image1").src=imageurl;
12 }
13 </script>
14 </head>
15 <body>
16 <form id="form1" runat="server">
17 <div>
18
19 <asp:FileUpload ID="FileUpload1" runat="server" onchange="preview(this.value);" />
20 <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="上传" />
21 <br />
22 <asp:Image ID="Image1" runat="server" />
23
24 </div>
25 </form>
26 </body>
27 </html>
28
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 <script language="javascript" type="text/javascript">
9 function preview(imageurl)
10 {
11 document.getElementById("Image1").src=imageurl;
12 }
13 </script>
14 </head>
15 <body>
16 <form id="form1" runat="server">
17 <div>
18
19 <asp:FileUpload ID="FileUpload1" runat="server" onchange="preview(this.value);" />
20 <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="上传" />
21 <br />
22 <asp:Image ID="Image1" runat="server" />
23
24 </div>
25 </form>
26 </body>
27 </html>
28
cs文件代码
1 using System;
2 using System.Collections;
3 using System.Configuration;
4 using System.Data;
5 using System.Linq;
6 using System.Web;
7 using System.Web.Security;
8 using System.Web.UI;
9 using System.Web.UI.HtmlControls;
10 using System.Web.UI.WebControls;
11 using System.Web.UI.WebControls.WebParts;
12 using System.Xml.Linq;
13
14 public partial class upload : System.Web.UI.Page
15 {
16 protected void Page_Load(object sender, EventArgs e)
17 {
18
19 }
20 protected void Button1_Click(object sender, EventArgs e)
21 {
22 Random rad = new Random();
23 string pathname = Server.MapPath("upload/");
24 string filename = FileUpload1.FileName;
25 string filesavename = DateTime.Now.Millisecond + rad.Next() + filename;
26 int filesize = FileUpload1.PostedFile.ContentLength;
27 string filetype = filename.Substring(filename.LastIndexOf(".") + 1);
28 if (filetype == "jpg" || filetype == "jpeg" || filetype == "gif")
29 {
30 if (filesize<200000)
31 {
32 FileUpload1.PostedFile.SaveAs(Server.MapPath("~/upload/"+filesavename));
33 //Image1.ImageUrl="~/upload/"+filesavename;
34 }
35 else
36 {
37 Response.Write("<script>alert('图片太大！');</script>");
38 }
39 }
40 else
41 {
42 Response.Write("<script>alert('上传格式不正确！');</script>");
43 }
44 }
45 }
2 using System.Collections;
3 using System.Configuration;
4 using System.Data;
5 using System.Linq;
6 using System.Web;
7 using System.Web.Security;
8 using System.Web.UI;
9 using System.Web.UI.HtmlControls;
10 using System.Web.UI.WebControls;
11 using System.Web.UI.WebControls.WebParts;
12 using System.Xml.Linq;
13
14 public partial class upload : System.Web.UI.Page
15 {
16 protected void Page_Load(object sender, EventArgs e)
17 {
18
19 }
20 protected void Button1_Click(object sender, EventArgs e)
21 {
22 Random rad = new Random();
23 string pathname = Server.MapPath("upload/");
24 string filename = FileUpload1.FileName;
25 string filesavename = DateTime.Now.Millisecond + rad.Next() + filename;
26 int filesize = FileUpload1.PostedFile.ContentLength;
27 string filetype = filename.Substring(filename.LastIndexOf(".") + 1);
28 if (filetype == "jpg" || filetype == "jpeg" || filetype == "gif")
29 {
30 if (filesize<200000)
31 {
32 FileUpload1.PostedFile.SaveAs(Server.MapPath("~/upload/"+filesavename));
33 //Image1.ImageUrl="~/upload/"+filesavename;
34 }
35 else
36 {
37 Response.Write("<script>alert('图片太大！');</script>");
38 }
39 }
40 else
41 {
42 Response.Write("<script>alert('上传格式不正确！');</script>");
43 }
44 }
45 }
