Support forums » Products » Ajax Uploader » Re: Leave page mechanism during upload.

Leave page mechanism during upload.

Last post 11-24-2009, 10:04 AM by cutechat. 3 replies.
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  •  11-17-2009, 3:29 PM 57222

    Leave page mechanism during upload.

    Reply Quote
    Hi all,
     
    The next code adds well known mechanism of preventing page leave to the "Simple Upload (Customizing the UI)" demo (with slight modifications):
    1. <%@ Page Language="C#" %>  
    2.   
    3. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
    4.   
    5. <script runat="server">  
    6.     void InsertMsg(string msg)  
    7.     {  
    8.         ListBoxEvents.Items.Insert(0, msg);  
    9.         ListBoxEvents.SelectedIndex = 0;  
    10.     }  
    11.     void Uploader_FileUploaded(object sender, UploaderEventArgs args)  
    12.     {  
    13.         Uploader uploader = (Uploader)sender;  
    14.         InsertMsg("File uploaded! " + args.FileName + ", " + args.FileSize + " bytes.");  
    15.   
    16.         //Copys the uploaded file to a new location.  
    17.         //args.CopyTo("c:\\temp\\"+args.FileName);  
    18.         //You can also open the uploaded file's data stream.  
    19.         //System.IO.Stream data = args.OpenStream();  
    20.     }  
    21.   
    22.     protected void Uploader1_UploadCompleted(object sender, UploaderEventArgs[] args)  
    23.     {  
    24.   
    25.     }  
    26. </script>  
    27.   
    28. <script type="text/javascript">  
    29.   
    30. window.onbeforeunload = confirmExit;  
    31.   
    32. function confirmExit() {  
    33.     return "Test!!!";  
    34. }  
    35.   
    36. </script>  
    37.   
    38.   
    39. <html xmlns="http://www.w3.org/1999/xhtml">  
    40. <head runat="server">  
    41.     <title>Simple Upload</title>  
    42.     <link rel="stylesheet" href="demo.css" type="text/css" />  
    43. </head>  
    44. <body>  
    45.     <form id="form1" runat="server">  
    46.         <div class="content">  
    47.             <h2>  
    48.                 Simple Upload (Customizing the UI)  
    49.             </h2>  
    50.             <a href="http://www.dapasoft.com">Link</a>  
    51.             <p>  
    52.                 A sample demonstrating how to customize the look and feel of file upload controls.  
    53.                 (Maximum file size: 10M).  
    54.             </p>  
    55.             <asp:Image runat="server" ID="Uploader1Insert" AlternateText="Upload File" ImageUrl="~/sampleimages/upload.png" />  
    56.             <asp:Panel runat="server" ID="Uploader1Progress" BorderColor="Orange" BorderStyle="dashed"  
    57.                 BorderWidth="2" Style="padding-right: 4px; padding-left: 4px; padding-bottom: 4px;  
    58.                 padding-top: 4px">  
    59.                 <asp:Label ID="Uploader1ProgressText" runat="server" ForeColor="Firebrick"></asp:Label>  
    60.             </asp:Panel>  
    61.             <asp:Image runat="server" ID="Uploader1Cancel" AlternateText="Cancel" ImageUrl="~/sampleimages/cancel_button.gif" />  
    62.             <CuteWebUI:Uploader runat="server" ID="Uploader1" InsertButtonID='Uploader1Insert'  
    63.                 ProgressCtrlID='Uploader1Progress' ProgressTextID='Uploader1ProgressText' CancelButtonID='Uploader1Cancel'  
    64.                 OnFileUploaded="Uploader_FileUploaded"   
    65.                 onuploadcompleted="Uploader1_UploadCompleted">  
    66.                 <ValidateOption MaxSizeKB="2097000" />  
    67.             </CuteWebUI:Uploader>  
    68.             <br />  
    69.             <br />  
    70.             <div>  
    71.                 Server Trace:  
    72.                 <br>  
    73.                 <br>  
    74.                 <asp:ListBox runat="server" ID="ListBoxEvents" Width="400"></asp:ListBox>  
    75.             </div>  
    76.         </div>  
    77.     </form>  
    78. </body>  
    79. </html> 
     
     
    If during file upload you try to leave the page next error appears:
     
    Can be done something about it?
    Regards,
    Michael Raizman

  •  11-18-2009, 10:32 AM 57256 in reply to 57222

    Re: Leave page mechanism during upload.

    Reply Quote
    Hi,
     
    Currently you can get avoid of the message by this way :
     
    <script>
    function CuteWebUI_AjaxUploader_OnError(msg)
    {
          if(msg.indexOf("transfer expired")!=-1)
                   return true;
    }
    </script>
     
    Regards,
    Terry

  •  11-18-2009, 1:30 PM 57261 in reply to 57256

    Re: Leave page mechanism during upload.

    Reply Quote
    Hi Terry,
     
    Thank you for your answer.

    If I press "Back" button, it doesn't help, I still see the error message.
    Regards,
    Michael Raizman

  •  11-24-2009, 10:04 AM 57387 in reply to 57261

    Re: Leave page mechanism during upload.

    Reply Quote
    Michael ,
     
    I have checked it.
     
    We will find another solution and will provide an update soon.
     
    Regards,
    Terry
     
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