asp.net文件上傳帶進度條實現(xiàn)案例（多種風格）

更新時間：2022年05月06日 15:10:22 投稿：lijiao

這篇文章主要講解了asp.net文件上傳帶進度條實現(xiàn)案例，有不同風格的進度條，一定有一款最適合你，感興趣的小伙伴們可以參考一下

先飽飽眼福：

在之前的文章中也有類似帶進度條文件傳送的案例，大家可以翻閱之前的文章對知識點進行擴充。

部分代碼：

<%@ 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() 
 { 
 //獲取文件長度 
 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("上傳 {0} ... {1} of {2} 字節(jié)", info.FileName, soFar, total); 
 
 // 返回百分比 
 return new { percentComplete = percentComplete, message = message }; 
 } 
 
 // 還沒有準備好... 
 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; 
 // 進度條 
 function pageLoad(){ 
 $addHandler($get('upload'), 'click', onUploadClick); 
 progressBar = $find('progress'); 
 } 
 // 注冊表單 
 function register(form, fileUpload){ 
 this.form = form; 
 this.fileUpload = fileUpload; 
 } 
 //上傳驗證 
 function onUploadClick() { 
 var vaild = fileUpload.value.length > 0; 
 if(vaild){ 
 $get('upload').disabled = 'disabled'; 
 updateMessage('info', '初始化上傳...'); 
 //提交上傳 
 form.submit(); 
 // 隱藏frame 
 Sys.UI.DomElement.addCssClass($get('uploadFrame'), 'hidden'); 
 // 0開始顯示進度條 
 progressBar.set_percentage(0); 
 progressBar.show(); 
 // 上傳過程 
 intervalID = window.setInterval(function(){ 
 PageMethods.GetUploadStatus(function(result){ 
 if(result){ 
 // 更新進度條為新值 
 progressBar.set_percentage(result.percentComplete); 
 //更新信息 
 updateMessage('info', result.message); 
 
 if(result == 100){ 
 // 自動消失 
 window.clearInterval(intervalID); 
 } 
 } 
 }); 
 }, 500); 
 } 
 else{ 
 onComplete('error', '您必需選擇一個文件'); 
 } 
 } 
 
 function onComplete(type, msg){ 
 // 自動消失 
 window.clearInterval(intervalID); 
 // 顯示消息 
 updateMessage(type, msg); 
 // 隱藏進度條 
 progressBar.hide(); 
 progressBar.set_percentage(0); 
 // 重新啟用按鈕 
 $get('upload').disabled = ''; 
 // 顯示frame 
 Sys.UI.DomElement.removeCssClass($get('uploadFrame'), 'hidden'); 
 } 
 function updateMessage(type, value){ 
 var status = $get('status'); 
 status.innerHTML = value; 
 // 移除樣式 
 status.className = ''; 
 Sys.UI.DomElement.addCssClass(status, type); 
 } 
 
 
// --></mce:script> 
 
 <div> 
 <div class="upload"> 
 <h3>文件上傳</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" style="display:none" mce_style="display:none" Value="0" Mode="Manual" Speed=".4" Width="100%" /> 
 <div> 
 <div id="status" class="info">請選擇要上傳的文件</div> 
 <div class="commands"> 
 <input id="upload" type="button" value="上傳" /> 
 </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) 
 { 
 // 讓父頁面知道無法處理上傳 
 const string js = "window.parent.onComplete('error', '無法上傳文件。請刷新頁面，然后再試一次);"; 
 ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", js, true); 
 } 
 else 
 { 
 // 讓服務端知道我們還沒有準備好.. 
 uploadInfo.IsReady = false; 
 
 // 上傳驗證 
 if (this.fileUpload.PostedFile != null && this.fileUpload.PostedFile.ContentLength > 0 
 
 && this.fileUpload.PostedFile.ContentLength < 1048576)// 限制1M 
 { 
 // 設置路徑 
 string path = this.Server.MapPath(@"Uploads"); 
 string fileName = Path.GetFileName(this.fileUpload.PostedFile.FileName); 
 
 // 上傳信息 
 uploadInfo.ContentLength = this.fileUpload.PostedFile.ContentLength; 
 uploadInfo.FileName = fileName; 
 uploadInfo.UploadedLength = 0; 
 
 //文件存在 初始化... 
 uploadInfo.IsReady = true; 
 
 //緩存 
 int bufferSize = 1; 
 byte[] buffer = new byte[bufferSize]; 
 
 // 保存字節(jié) 
 using (FileStream fs = new FileStream(Path.Combine(path, fileName), FileMode.Create)) 
 { 
 while (uploadInfo.UploadedLength < uploadInfo.ContentLength) 
 { 
 //從輸入流放進緩沖區(qū) 
 int bytes = this.fileUpload.PostedFile.InputStream.Read(buffer, 0, bufferSize); 
 // 字節(jié)寫入文件流 
 fs.Write(buffer, 0, bytes); 
 // 更新大小 
 uploadInfo.UploadedLength += bytes; 
 
 // 線程睡眠 上傳就更慢 這樣就可以看到進度條了 
 System.Threading.Thread.Sleep(100); 
 } 
 } 
 
 // 刪除. 
 File.Delete(Path.Combine(path, fileName)); 
 
 // 讓父頁面知道已經(jīng)處理上傳完畢 
 const string js = "window.parent.onComplete('success', '{0} 已成功上傳');"; 
 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', '超出上傳文件限制大小，請重新選擇');"; 
 ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", js, true); 
 } 
 else 
 { 
 const string js = "window.parent.onComplete('error', '上傳文件出錯');"; 
 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} 已成功上傳');"; 
 ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", string.Format(js, fileName), true); 
 } 
 else 
 { 
 const string js = "window.parent.onComplete('error', '上傳文件出錯');"; 
 ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", js, true); 
 } 
 uploadInfo.IsReady = false; 
 } 
 }

代碼就不貼完了，直接上干貨，親，這可是免郵的哦！下載地址

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