檔案上傳 帶進度條 多種風格 非常漂亮。
友好的提示 以及上傳驗證。
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() { //擷取檔案長度 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} 位元組", 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'); } // 註冊表單 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); //更新資訊 updateMessage('info', result.message); if(result == 100){ // 自動消失 window.clearInterval(intervalID); } } }); }, 500); } else{ onComplete('error', '您必需選擇一個檔案'); } } function onComplete(type, msg){ // 自動消失 window.clearInterval(intervalID); // 顯示訊息 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>檔案上傳</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">請選擇要上傳的檔案</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', '無法上傳檔案。請重新整理頁面，然後再試一次);"; 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 { // 設定路徑 string path = this.Server.MapPath(@"Uploads"); string fileName = Path.GetFileName(this.fileUpload.PostedFile.FileName); // 上傳資訊 uploadInfo.ContentLength = this.fileUpload.PostedFile.ContentLength; uploadInfo.FileName = fileName; uploadInfo.UploadedLength = 0; //檔案存在 初始化... uploadInfo.IsReady = true; //緩衝 int bufferSize = 1; byte[] buffer = new byte[bufferSize]; // 儲存位元組 using (FileStream fs = new FileStream(Path.Combine(path, fileName), FileMode.Create)) { while (uploadInfo.UploadedLength < uploadInfo.ContentLength) { //從輸入資料流放進緩衝區 int bytes = this.fileUpload.PostedFile.InputStream.Read(buffer, 0, bufferSize); // 位元組寫入檔案流 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', '超出上傳檔案限制大小，請重新選擇');"; ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", js, true); } else { const string js = "window.parent.onComplete('error', '上傳檔案出錯');"; 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', '上傳檔案出錯');"; ScriptManager.RegisterStartupScript(this, typeof(upload_aspx), "progress", js, true); } uploadInfo.IsReady = false; } }
代碼就不貼完了 直接打包下載吧。
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