1 <body> 2 <form id="form1" runat="server"> 3 <div> 4 <table> 5 <tr> 6 <td style=" 400px"> 7 <input id="InputFile" style=" 399px" type="file" runat="server" /></td> 8 <td style=" 80px"> 9 <asp:Button ID="UploadButton" runat="server" Text="上传图片" OnClick="UploadButton_Click" /></td> 10 </tr> 11 12 </table> 13 </div> 14 15 </form> 16 </body>
.cs代码
1 protected void UploadButton_Click(object sender, EventArgs e) 2 { 3 string uploadName = InputFile.Value;//获取待上传图片的完整路径，包括文件名 4 //string uploadName = InputFile.PostedFile.FileName; 5 string pictureName = "";//上传后的图片名，以当前时间为文件名，确保文件名没有重复 6 if (InputFile.Value != "") 7 { 8 int idx = uploadName.LastIndexOf("."); 9 string suffix = uploadName.Substring(idx);//获得上传的图片的后缀名 10 pictureName = DateTime.Now.Ticks.ToString() + suffix; 11 } 12 try 13 { 14 if (uploadName != "") 15 { 16 17 string path = Server.MapPath("~/images/");//文件夹必须存在 否则报错，创建文件夹的方法if(File.Exists(@"文件路径")) System.IO.File.Create() 18 InputFile.PostedFile.SaveAs(path + pictureName); 19 Response.Write("<script>alert('上传成功')</script>"); 20 21 } 22 } 23 catch (Exception ex) 24 { 25 Response.Write(ex); 26 } 27 }
另一种方式，使用httpHander
1 <body> 2 <!-- 请求报文的格式发生改变了，因为form表单中加入enctype="multipart/form-data" 3 Content-Type: multipart/form-data; boundary=---------------------------7dd34bc30222 4 --> 5 <form action="UploadImage.ashx" method="post" enctype="multipart/form-data"> 6 选择图片：<input type="file" name="fImage" /> 7 <input type="text" name="txtName" value="rose" /> 8 <input type="submit" value="上传" /> 9 </form> 10 </body>
using System; using System.Web; using System.IO; public class UploadImage : IHttpHandler { public void ProcessRequest (HttpContext context) { context.Response.ContentType = "text/plain"; //接收上传 的文件 HttpRequest.Files属性拿到了上传的所有文件 HttpPostedFile pfile = context.Request.Files[0]; if (pfile != null) { //保存到硬盘上, string path = context.Server.MapPath("~/Upload"); //string fileName = Path.GetFileName(pfile.FileName); string fileName = context.Request.Form["txtName"]; fileName = Path.Combine(path, fileName + ".jpg"); pfile.SaveAs(fileName); context.Response.Write("上传"+Path.GetFileName(fileName)+"成功了"); context.Response.End();//不能再向Response中写入内容,本次请求结束 } context.Response.Write("上传失败了，请重新试一下"); } public bool IsReusable { get { return false; } } }