先饱饱眼福：
在之前的文章中也有类似带进度条文件传送的案例，大家可以翻阅之前的文章对知识点进行扩充。
部分代码：
<%@ Page Language="C#" %> <%@ Register Assembly="MattBerseth.WebControls.AJAX" Namespace="MattBerseth.WebControls.AJAX.Progress" TagPrefix="mb" %> <!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>Untitled Page</title> <link rel="Stylesheet" href="_assets/css/progress.css" mce_href="_assets/css/progress.css" /> <link rel="Stylesheet" href="_assets/css/upload.css" mce_href="_assets/css/upload.css" /> <mce:style type="text/css"><!-- BODY{ font-family:Arial, Sans-Serif; font-size:12px;} --></mce:style><style type="text/css" mce_bogus="1"> BODY{ font-family:Arial, Sans-Serif; font-size:12px;} </style> <mce:script type="text/C#" runat="server"><!-- protected void Page_Load(object sender, EventArgs args) { if (!this.IsPostBack) { this.Session["UploadInfo"] = new UploadInfo { IsReady = false }; } } /// <summary> /// /// </summary> [System.Web.Services.WebMethod] [System.Web.Script.Services.ScriptMethod] public static object GetUploadStatus() { //获取文件长度 UploadInfo info = HttpContext.Current.Session["UploadInfo"] as UploadInfo; if (info != null && info.IsReady) { int soFar = info.UploadedLength; int total = info.ContentLength; int percentComplete = (int)Math.Ceiling((double)soFar / (double)total * 100); string message = string.Format("上传 {0} ... {1} of {2} 字节", info.FileName, soFar, total); // 返回百分比 return new { percentComplete = percentComplete, message = message }; } // 还没有准备好... return null; } // --></mce:script> </head> <body> <form id="form1" runat="server"> <asp:ScriptManager ID="scriptManager" runat="server" EnablePageMethods="true" /> <mce:script type="text/javascript"><!-- var intervalID = 0; var progressBar; var fileUpload; var form; // 进度条 function pageLoad(){ $addHandler($get('upload'), 'click', onUploadClick); progressBar = $find('progress'); } // 注册表单 function register(form, fileUpload){ this.form = form; this.fileUpload = fileUpload; } //上传验证 function onUploadClick() { var vaild = fileUpload.value.length > 0; if(vaild){ $get('upload').disabled = 'disabled'; updateMessage('info', '初始化上传...'); //提交上传 form.submit(); // 隐藏frame Sys.UI.DomElement.addCssClass($get('uploadFrame'), 'hidden'); // 0开始显示进度条 progressBar.set_percentage(0); progressBar.show(); // 上传过程 intervalID = window.setInterval(function(){ PageMethods.GetUploadStatus(function(result){ if(result){ // 更新进度条为新值 progressBar.set_percentage(result.percentComplete); //更新信息 updateMessage('info', result.message); if(result == 100){ // 自动消失 window.clearInterval(intervalID); } } }); }, 500); } else{ onComplete('error', '您必需选择一个文件'); } } function onComplete(type, msg){ // 自动消失 window.clearInterval(intervalID); // 显示消息 updateMessage(type, msg); // 隐藏进度条 progressBar.hide(); progressBar.set_percentage(0); // 重新启用按钮 $get('upload').disabled = ''; // 显示frame Sys.UI.DomElement.removeCssClass($get('uploadFrame'), 'hidden'); } function updateMessage(type, value){ var status = $get('status'); status.innerHTML = value; // 移除样式 status.className = ''; Sys.UI.DomElement.addCssClass(status, type); } // --></mce:script> <div> <div> <h3>文件上传</h3> <div> <iframe id="uploadFrame" frameborder="0" scrolling="no" src="Upload.aspx" mce_src="Upload.aspx"></iframe> <mb:ProgressControl ID="progress" runat="server" CssClass="lightblue" mce_style="display:none" Value="0" Mode="Manual" Speed=".4" Width="100%" /> <div> <div id="status">请选择要上传的文件</div> <div> <input id="upload" type="button" value="上传" /> </div> </div> </div> </div> </div> </form> </body> </html>
upload.aspx:
//限制大小 1M protected void Page_Load2(object sender, EventArgs e) { if (this.IsPostBack) { UploadInfo uploadInfo = this.Session["UploadInfo"] as UploadInfo; if (uploadInfo == null) { // 让父页面知道无法处理上传 const string js = "window.parent.onComplete('error', '无法上传文件。请刷新页面，然后再试一次);"; ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", js, true); } else { // 让服务端知道我们还没有准备好.. uploadInfo.IsReady = false; // 上传验证 if (this.fileUpload.PostedFile != null && this.fileUpload.PostedFile.ContentLength > 0 && this.fileUpload.PostedFile.ContentLength < 1048576)// 限制1M { // 设置路径 string path = this.Server.MapPath(@"Uploads"); string fileName = Path.GetFileName(this.fileUpload.PostedFile.FileName); // 上传信息 uploadInfo.ContentLength = this.fileUpload.PostedFile.ContentLength; uploadInfo.FileName = fileName; uploadInfo.UploadedLength = 0; //文件存在 初始化... uploadInfo.IsReady = true; //缓存 int bufferSize = 1; byte[] buffer = new byte[bufferSize]; // 保存字节 using (FileStream fs = new FileStream(Path.Combine(path, fileName), FileMode.Create)) { while (uploadInfo.UploadedLength < uploadInfo.ContentLength) { //从输入流放进缓冲区 int bytes = this.fileUpload.PostedFile.InputStream.Read(buffer, 0, bufferSize); // 字节写入文件流 fs.Write(buffer, 0, bytes); // 更新大小 uploadInfo.UploadedLength += bytes; // 线程睡眠 上传就更慢 这样就可以看到进度条了 System.Threading.Thread.Sleep(100); } } // 删除. File.Delete(Path.Combine(path, fileName)); // 让父页面知道已经处理上传完毕 const string js = "window.parent.onComplete('success', '{0} 已成功上传');"; ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", string.Format(js, fileName), true); } else { if (this.fileUpload.PostedFile.ContentLength >= 1048576)//1M { const string js = "window.parent.onComplete('error', '超出上传文件限制大小，请重新选择');"; ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", js, true); } else { const string js = "window.parent.onComplete('error', '上传文件出错');"; ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", js, true); } } uploadInfo.IsReady = false; } } } // 不限制大小 protected void Page_Load(object sender, EventArgs e) { if (this.IsPostBack) { UploadInfo uploadInfo = this.Session["UploadInfo"] as UploadInfo; uploadInfo.IsReady = false; if (this.fileUpload.PostedFile != null && this.fileUpload.PostedFile.ContentLength > 0) { string path = this.Server.MapPath(@"Uploads"); string fileName = Path.GetFileName(this.fileUpload.PostedFile.FileName); uploadInfo.ContentLength = this.fileUpload.PostedFile.ContentLength; uploadInfo.FileName = fileName; uploadInfo.UploadedLength = 0; uploadInfo.IsReady = true; int bufferSize = 1; byte[] buffer = new byte[bufferSize]; using (FileStream fs = new FileStream(Path.Combine(path, fileName), FileMode.Create)) { while (uploadInfo.UploadedLength < uploadInfo.ContentLength) { int bytes = this.fileUpload.PostedFile.InputStream.Read(buffer, 0, bufferSize); fs.Write(buffer, 0, bytes); uploadInfo.UploadedLength += bytes; } } const string js = "window.parent.onComplete('success', '{0} 已成功上传');"; ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", string.Format(js, fileName), true); } else { const string js = "window.parent.onComplete('error', '上传文件出错');"; ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", js, true); } uploadInfo.IsReady = false; } }
代码就不贴完了，直接上干货，亲，这可是免邮的哦！下载地址
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