這裡有一個要點大家不要忽略了,否則程式不能正常工作。
就是必須指定form的enctype="multipart/form-data" 屬性
代碼如下:
<%@ 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 = "繼續添加附件"; tb = document.getElementById('attAchments'); newRow = tb.insertRow(); newRow.insertCell().innerHTML = "<input name='File' size='50' type='file'> <input type=button value='刪除' onclick='delFile(this.parentElement.parentElement.rowIndex)'>"; } function delFile(index) { document.getElementById('attAchments').deleteRow(index); tb.rows.length > 0?document.getElementById('attach').innerText = "繼續添加附件":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:宋體;font-size:9pt;" title="如果您要發送多個附件,您只需多次點擊“繼續添加附件”即可, 要注意附件總量不能超過發送限制的大小。" onclick="AddAttachments();" href="javascript:;" name="attach">添加附件</A> <br><br><br><br><br><br> <asp:Button id="btnSend" runat="server" Text=" 上傳 "></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()); } |