asp.net ajax 和 asp.net 2.0中的fileupload合力打造无刷新文件上传
【IT168技术文档】
在做一个信息管理平台时用到了图片,就像做一个上传的,正好用的是asp.net ajax
就试着做了一个
不很好
自定义用户控件文件 PicUpload.ascx
自定义用户控件文件 PicUpload.ascx.cs1<%@ control language="C#" autoeventwireup="true" inherits="Admin_PicUpload, App_Web_mboefw14" %> 2 <asp:Image ID="EP_Image" runat="server" Height="160px" ImageUrl='<%# Bind("EP_Pic") %>' 3 Width="314px" /> 4<br /> 5<asp:FileUpload ID="FileUpload1" runat="server" /> 6<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="上传" />
逐步完成...1using System; 2using System.Data; 3using System.Configuration; 4using System.Collections; 5using System.Web; 6using System.Web.Security; 7using System.Web.UI; 8using System.Web.UI.WebControls; 9using System.Web.UI.WebControls.WebParts; 10using System.Web.UI.HtmlControls; 11 12public partial class Admin_PicUpload : System.Web.UI.UserControl 13{ 14 protected void Page_Load(object sender, EventArgs e) 15 { 16 17 } 18 protected void Button1_Click(object sender, EventArgs e) 19 { 20 bool fileOK = false; 21 //获取根文件绝对路径 22 string path = Server.MapPath("~/UpLoad/"); 23 //如上传了文件,就判断文件格式 24 FileUpload FU = FileUpload1; 25 if (FU.HasFile) 26 { 27 string fileExtension = System.IO.Path.GetExtension(FU.FileName).ToLower(); 28 string[] allowedExtensions ={ ".gif", ".jpg", ".png", ".bmp", }; 29 for (int i = 0; i < allowedExtensions.Length; i++) 30 { 31 if (fileExtension == allowedExtensions[i]) 32 { 33 fileOK = true; 34 } 35 } 36 } 37 //调用saveas方法,实现上传文件 38 if (fileOK) 39 { 40 try 41 { 42 FileUpload1.SaveAs(path + System.DateTime.Now.ToString("yyyyMMddhhmmss")+FU.FileName); 43 EP_Image.ImageUrl = "../Upload/" + System.DateTime.Now.ToString("yyyyMMddhhmmss") + FU.FileName; 44 Button1.Text = "上传成功"; 45 } 46 finally 47 { 48 } 49 } 50 else 51 { 52 Button1.Text = "上传失败,格式不允许"; 53 } 54 } 55} 56
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