FileUpLoad 多文件上传代码,Asp.Net代码库,德仔网

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【Asp.Net】 FileUpLoad 多文件上传
作者:Dezai.CN / 发布于2012/12/4/ 636
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>未命名頁面</title>
    <style type="text/css">
.myspan { BACKGROUND-COLOR: blue; HEIGHT: 20px; COLOR: #fff; CURSOR: pointer; boder: solid 1px ccc }
</style>
 
    <script language="javascript">
        var tempID=1;
        function AddFile(obj)
        {
            if(tempID>4)
            {
                alert("最多只能同時上傳5個文件")
                return;
            }
            var filenfo = document.getElementById("FilesInfo");
            var odiv = document.createElement("div");
            odiv.id = "div_"+tempID;
            odiv.innerHTML  +="<input type ='file' name ='File' id='File_"+tempID+"' size='55'><span title='取消' onclick='removeFile("+tempID+")' class='myspan'>取消</span>";
            filenfo.appendChild(odiv);
            tempID++;
        }
        function removeFile(removeID)
        {
             
            var FileInfo = document.getElementById("FilesInfo");
            var tempFiles = document.getElementById("div_"+removeID);
            if(tempFiles)
            {
                FileInfo.removeChild(tempFiles)
                tempID = tempID-1;
            }
        }
        function StartUpFile()
        {
            if(document.getElementById("File0").value == "")
            {
                document.getElementById("lblMessage").innerHTML= "請選擇上傳文件";
                event.returnValue = false;
                return;
            }
            document.getElementById("lblMessage").innerHTML = "    正在上傳,請稍候...";
        }
         
         
    </script>
 
</head>
<body>
    <form id="form1" runat="server" enctype="multipart/form-data">
        <div id="Add">
            <b>上傳文件</b>
            <div id="baseFile">
                <input id="File0" type="file" name="Files0" size="55"></div>
            <div id="FilesInfo">
            </div>
            <div>
                <asp:Button ID="btnUpFile" runat="server" Text="開始上傳" OnClientClick="StartUpFile()" OnClick="btnUpFile_Click">
                </asp:Button>
                <input onclick="AddFile()" type="button" value="添加文件" style="width: 79px; height: 24px">
            </div>
            <asp:Label ID="lblMessage" runat="server" ForeColor="#ff0066"></asp:Label></div>
    </form>
</body>
</html>
[code=C#]
protected void btnUpFile_Click(object sender, EventArgs e)
    {
        HttpFileCollection files = Request.Files;
        HttpPostedFile postFile;
        for (int i = 0; i < files.Count; i++)
        {
            postFile = files[i];
            if (postFile.ContentLength == 0) continue;
            UpLoadFile(postFile, Server.MapPath("~/") + Path.GetFileName(postFile.FileName));
        }
        Response.Write("上傳成功");
 
    }
    public void UpLoadFile(System.Web.HttpPostedFile postFile, string savePath)
    {
        try
        {
            if (!Directory.Exists(Path.GetDirectoryName(savePath)))
                Directory.CreateDirectory(Path.GetDirectoryName(savePath));
            using (FileStream fs = new FileStream(savePath, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite))
            {
                using (BinaryReader reader = new BinaryReader(postFile.InputStream))
                {
                    int bufferLength = 0;
                    int readLength = 10240;
                    byte[] buffer = new byte[10240];
                    while (true)
                    {
                        bufferLength = reader.Read(buffer, 0, readLength);
                        if (bufferLength == 0) break;
                        fs.Write(buffer, 0, bufferLength);
                    }
                }
            }
        }
        catch (Exception ex)
        {
            throw new Exception(ex.Source + ex.Message);
        }
    }
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