resize an Image sent by ajax RSS

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  pasluc7469

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  12 Posts

  resize an Image sent by ajax

  Nov 10, 2012 01:23 PM|LINK

  hi experts, i have a problem with , hope someone can help me!!!

  I have an aspx page with this code:

  <input id="fileToUpload" type="file" size="5" name="fileToUpload" onchange="return handelEvent();" />
    <br />
    <input type="button" value="Salva" id="submit" name="submit" onclick="return GetContents();" class="pro_btn pro_comment2 pro_inf" />
    <img id="loading" src="jqueryFileUpload/loading.gif" style="display:none;" />

  on the button click, i call this ajax function:

   $.ajaxFileUpload
     (
     {
      url: 'WebServices/ImageHandler.ashx',
      secureuri: false,
      fileElementId: 'fileToUpload',
      dataType: 'json',
      data: { name: 'logan', id: 'id', idArticle: idArticle },
        success: function (data, status) {
          if (typeof (data.error) != 'undefined') {
             if (data.error != '') {
                    alert(data.error);
             } else {
             alert(data.msg);
                     }
             }
             },
             error: function (data, status, e) {
                 alert(e);
             }
         }
     )

  the issue is in the .ashx file, because i'm not be able to get a Bitmap object

    public void ProcessRequest(HttpContext context)
          {
              if (context.Request.Files.Count > 0)
              {
  ........
  Bitmap originalBMP = new Bitmap(context.Response.OutputStream);
  .......
  }

  Exeption: NotSupportedException...

  how can i fix this problem???

  Thank you in advance.
  
  
  

• • Reply
  

  Song-Tian - ...

  All-Star

  43699 Points

  4304 Posts

  Microsoft

  Re: resize an Image sent by ajax

  Nov 13, 2012 06:43 AM|LINK

  Hi,

  For Bitmap, please refer to: http://msdn.microsoft.com/en-us/library/system.drawing.bitmap.aspx.

  Please mark the replies as answers if they help or unmark if not.
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  • Edited by Song-Tian - MSFT on Nov 16, 2012 08:22 AM
  • Edited by mbanavige on Nov 18, 2012 08:54 PM
• • Reply
  

  Neodynamic

  Participant

  988 Points

  283 Posts

  Re: resize an Image sent by ajax

  Nov 13, 2012 09:30 AM|LINK

  So the problem is that you want to handle the upload image through Bitmap class and you get such exception error? If yes, then the issue for me is that you are not specifying the correct constructor param to Bitmap class here:

  Bitmap originalBMP = new Bitmap(context.Response.OutputStream);

  To get the content of the uploaded file you should replace that line by this one:

  Bitmap originalBMP = new Bitmap(context.Request.Files[0].InputStream);

  HTH
  
  
  

  Barcode, Labeling, Printing & Imaging tools for ASP.NET Developers
  • Marked as answer by Song-Tian - MSFT on Nov 16, 2012 08:22 AM
• • Reply
  

  pasluc7469

  0 Points

  12 Posts

  Re: resize an Image sent by ajax

  Nov 14, 2012 02:59 PM|LINK

  Neodynamic

  So the problem is that you want to handle the upload image through Bitmap class and you get such exception error? If yes, then the issue for me is that you are not specifying the correct constructor param to Bitmap class here:

  Bitmap originalBMP = new Bitmap(context.Response.OutputStream);

  To get the content of the uploaded file you should replace that line by this one:

  Bitmap originalBMP = new Bitmap(context.Request.Files[0].InputStream);

  HTH
  
  
  

  That's perfect... thank you!!!