Asp.Net多附件上传

这里有一个要点大家不要忽略了，否则程序不能正常工作。
就是必须指定form的enctype="multipart/form-data" 属性

代码如下： 
<%@ Page language="c#" Codebehind="MultiAttchments.aspx.cs" AutoEventWireup="false" Inherits="WebApplication3.MultiAttchments" %>

            <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >

            <HTML>

                  <HEAD>

                        <script>

                        function AddAttachments()

                        {

                              document.getElementById('attach').innerText = "继续添加附件";

                              

                              tb = document.getElementById('attAchments');                  

                              newRow = tb.insertRow();

                              newRow.insertCell().innerHTML = "<input name='File' size='50' type='file'>&nbsp;&nbsp;<input type=button value='删除' onclick='delFile(this.parentElement.parentElement.rowIndex)'>";

                        }

                        function delFile(index)

                        {

                              document.getElementById('attAchments').deleteRow(index);

                              tb.rows.length > 0?document.getElementById('attach').innerText = "继续添加附件":document.getElementById('attach').innerText = "添加附件";

                        }

                        </script>

                  </HEAD>

                  <body MS_POSITIONING="GridLayout">

                        <form id="form1" method="post" runat="server" enctype="multipart/form-data">

                        <div><table id="attAchments"></table></div><span><IMG src="icoAddFl.gif"> </span> <A id="attach" style="font-family:宋体;font-size:9pt;" title="如果您要发送多个附件，您只需多次点击“继续添加附件”即可, 要注意附件总量不能超过发送限制的大小。" onclick="AddAttachments();"

                                    href="javascript:;" name="attach">添加附件</A>

                              <br><br><br><br><br><br>

                              <asp:Button id="btnSend" runat="server" Text=" 上传 "></asp:Button>

                        </form>

                  </body>

            </HTML>
            
private void btnSend_Click(object sender, System.EventArgs e)

            {

                  StringBuilder sb = new StringBuilder();
            
 

            
      int attCount = 0;

                  string filePath = "";

                        for(int i=0; i< Request.Files.Count; i++)

                        {

                              if(Request.Files[i].ContentLength > 0)

                              {

                                    filePath = Request.Files[i].FileName;

                                    sb.Append("Files" + attCount++ + ": " + filePath + "<br>");

                                    Request.Files[0].SaveAs(Server.MapPath("./") + filePath.Substring(filePath.LastIndexOf("file://%22)+1/));

                              }

                        }

            
      sb.Insert(0, "you upload " + attCount + " files.<br>");

                  Response.Write(sb.ToString());

            }

posted on 2008-06-25 16:27  EricGu  阅读(1195)  评论(0)  编辑  收藏  举报

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