When I print a pdf file with PDFsharp in c# with this code below
printDocument1.PrinterSettings = printDialog1.PrinterSettings;
PdfFilePrinter.AdobeReaderPath = #"C:\Program Files\Adobe\Reader 10.0\Reader\AcroRd32.exe";
PdfFilePrinter printer = new PdfFilePrinter(pdfFilename, printDocument1.PrinterSettings.PrinterName);
try
{
printer.Print();
}
catch (Exception ex)
{
throw new NotImplementedException();
}
, everything is fine while printing but one thing I don't like is AdobeReader pops up.
How can I close this pop-up by code?
Please help.
The PdfFilePrinter class uses Process.Start to start Adobe Reader. You can play with the ProcessStartInfo options and maybe you can get the behavior you want (launch minimized or without a window at all etc.).
PDFsharp is open source and the PdfFilePrinter class is included in the source package. IIRC this class was developed in the days of Adobe Reader 5 or 6. Maybe Adobe Reader 10 or XI can do better with a slightly modified way of invoking them.
I don't have time to try this myself, but I would like to hear from you if you managed to improve your issue.
Or is the issue to close Adobe Reader after printing? That would be more difficult as you have to find out when Reader finished printing.
Related
I wrote a game in flex and that game has sound. I load the sound from an asset like this to play the sound file, this is the function:
public function playSound(value:String, vol:Number):void
{
mySound=new Sound();
var urlRequest:URLRequest=new URLRequest(value);
mySound.load(urlRequest);
sChannel=mySound.play(0, 0, new SoundTransform(vol, 0));
}
When I'd like to play the sound I call it like this:
playSound("sounds/abc.mp3", 1)
The "sounds" in the package in the current project. It works fine when I build in eclipse, but when I put that game on the web, I can't hear the music.
Could anyone tell me how to fix please
Have you ever tried to modified your sound file by
Remove all metadata in the sound file.
Export it to a new MP3 file.
Is it too large to load? Try to add error event to listen.
var urlRequest:URLRequest=new URLRequest(value);
You're passing this a relative path, so when it's running on a remote machine it's looking there for the sound and obviously not finding it. You need to embed the sound, as detailed in this question:
[Embed(source="myfile.mp3")]
[Bindable] //Not required. Just an example of using multiple meta tags.
public var soundCls:Class;
Then, I'm a bit rusty, but I believe it's
sChannel = new soundCls().play(0, 0, new SoundTransform(vol, 0));
Just try this.
var urlReq:URLRequest = new URLRequest("assets/sound/sound3.mp3");
var sound:Sound= new Sound(urlReq);
sound.play();
Dear Expert i am getting an error while saving an image the code is as follows
ClsImageManager objImgManager = new ClsImageManager();
Bitmap ImageBitmap = objImgManager.GetBitmapFromBytes(ImageData);
Response.ContentType = "image/tiff";
ImageBitmap.Save(Response.OutputStream, ImageFormat.Tiff);
ImageBitmap.Dispose();
Response.End();
when i used Image.format.jpeg the code is working good but when i changes it to ImageFormat.Tiff then i am getting an error a generic error occurred in gdi+.
You should note that GDI/GDI+ (System.Drawing namespace) is not officially supported in ASP.NET - see "Caution" in http://msdn.microsoft.com/en-us/library/system.drawing.aspx.
WIC is supposed to be used instead GDI+ (see http://weblogs.asp.net/bleroy/archive/2009/12/10/resizing-images-from-the-server-using-wpf-wic-instead-of-gdi.aspx)
Said that, many had successfully use GDI+ in ASP.NET. Most probably, you should attempt saving image into memory stream (or on file) and then writing saved image into the response. See this link for details: http://www.west-wind.com/weblog/posts/2006/Oct/19/Common-Problems-with-rendering-Bitmaps-into-ASPNET-OutputStream
Another work-around can be related to user account. Apparently, GDI/GDI+ is bound to device context (screen, printer etc) and they may not be available under service accounts. So you may try running your ASP.NET code on some normal user account if that helps or not.
You may need to try explicitly encoding the image save.
Have a look at the code example at the bottom of this MSDN documentation on Image.Save
Image.Save Method (String, ImageCodecInfo, EncoderParameters)
The same actions can be applied to your save.
However, it could also possibly be that your objImgManager is disposing of the buffer where the image is stored before you can save it.
Bitmap ImageBitmap = objImgManager.GetBitmapFromBytes(ImageData);
You can get around this by creating a copy of the image by doing this:
Bitmap ImageBitmap = new Bitmap(objImgManager.GetBitmapFromBytes(ImageData));
In asp.net, we have uploaded a .jpeg file and saved this as bitmap image using following code
HttpPostedFile uploadFile;
System.IO.Stream stream = uploadFile.InputStream;
using (System.Drawing.Image imgSource = System.Drawing.Bitmap.FromStream(stream))
{
System.Drawing.Image.GetThumbnailImageAbort myCallback = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback);
using (System.Drawing.Image imgThumbnail = imgSource.GetThumbnailImage(imgSource.Width, imgSource.Height, myCallback, IntPtr.Zero))
{
imgThumbnail.Save(filePath, System.Drawing.Imaging.ImageFormat.Jpeg);
imgThumbnail.Dispose();
}
imgSource.Dispose();
}
stream.Close();
stream.Flush();
stream.Dispose();
After upload, if we perfrom delete operation it throws error.
We are following code to do so;
if (File.Exists(filePath))
{
File.Delete(filePath);
}
The exception says:The process cannot access the file 'abc.jpg' because it is being used by another process.
Does anyone know, why this is happening ?
Thanks in advance.
The garbage collector doesn't release it's resources to your file immediately.
You can try and run GC.Collect() to "force" the garbage collector to do it's thing. Do this after you have Disposed your file and before you try and delete it.
Edit: I you have some anti virus software on your machine it's likely that it is what is using your file. Same if you have an Explorer window open to the folder where the image is created etc.
How about trying first flushing and then closing the stream?
Also:
The using construct takes care of calling Dispose() for you. You don't need to do it explicitly, and in fact, doing so might break improperly implemented IDisposables.
Are you absolutely sure that filename is different each time? If not, concurrent requests may overwrite each others' files, so the exception you're getting may be caused by one thread trying to delete the file while another is overwriting it.
We're having problems with an ASP.NET application which allows users to upload, and crop images. The images are all scaled to fixed sizes afterwards. We basically run out of memory when a large file is processed; it seems that the handling of JPEG is rather inefficient -- we're using System.Drawing.BitMap. Do you have any general advice, and perhaps some pointers to a more efficient image handling library? What experiences do you have?
I had the same problem, the solution was to use System.Drawing.Graphics to do the transformations and dispose every bitmap object as soon as I was finished with it. Here's a sample from my library (resizing) :
public Bitmap ApplyTo(Bitmap bitmap)
{
using (bitmap)
{
Bitmap newBitmap = new Bitmap(bitmap, CalculateNewSize(bitmap));
using (Graphics graphics = Graphics.FromImage(newBitmap))
{
graphics.SmoothingMode =
SmoothingMode.None;
graphics.InterpolationMode =
InterpolationMode.HighQualityBicubic;
graphics.CompositingQuality =
CompositingQuality.HighQuality;
graphics.DrawImage(
bitmap,
new Rectangle(0, 0, newBitmap.Width, newBitmap.Height));
}
return newBitmap;
}
}
I found imageresizer and its great. and good API. Works Great.
Downloaded from Visual studio 2010 Extension Manager: http://nuget.org/.
Easy Steps to download API in VS-2010:
1). Install Extension http://nuget.org/.
3). Find and Install ImageResizing
4).Then Code: (I m using here cropping. you can use any) Documentation on imageresizing.net
string uploadFolder = Server.MapPath(Request.ApplicationPath + "images/");
FileUpload1.SaveAs(uploadFolder + FileUpload1.FileName);
//The resizing settings can specify any of 30 commands.. See http://imageresizing.net for details.
ResizeSettings resizeCropSettings = new ResizeSettings("width=200&height=200&format=jpg&crop=auto");
//Generate a filename (GUIDs are safest).
string fileName = Path.Combine(uploadFolder, System.Guid.NewGuid().ToString());
//Let the image builder add the correct extension based on the output file type (which may differ).
fileName = ImageBuilder.Current.Build(uploadFolder + FileUpload1.FileName, fileName, resizeCropSettings, false, true);
Try!!! its very awsumm and easy to use. thanks.
A couple of thoughts spring to mind -
What size of images do you allow
your users to upload and can you
impose restrictions on this?
When you're using the
System.Drawing.Bitmap class, are you
remembering to dispose of it
correctly? We found one of the primary causes of System.OutOfMemoryException exceptions on our shared hosting platform was users not disposing of Bitmap objects correctly.
Kev
There was an older bug with .net that all images would default to 32 bits per pixel - at this size you can exhaust your memory pretty fast. Please use PixelFormat structure to make sure this is not the case for your problem.
This link might help: http://msdn.microsoft.com/en-us/library/aa479306.aspx
Do you perhaps have a stack trace to look at?
I have also done some image editing after a user has uploaded an image. The only problems that I ran into were restrictions on file upload size on the browsers and timeouts. But nothing related to .Net's libraries.
Something else to consider. If you are doing multiple images or have some dangerous looping somewhere then are you making sure to flush() and dispose() things.
Is it possible to generate PDF Documents in an Adobe AIR application without resorting to a round trip web service for generating the PDF? I've looked at the initial Flex Reports on GoogleCode but it requires a round trip for generating the actual PDF.
Given that AIR is supposed to be the Desktop end for RIAs is there a way to accomplish this? I suspect I am overlooking something but my searches through the documentation don't reveal too much and given the target for AIR I can't believe that it's just something they didn't include.
There's AlivePDF, which is a PDF generation library for ActionScript that should work, it was made just for the situation you describe.
Just added a Adobe Air + Javascript + AlivePDF demo:
This demo doesn't require flex and is pretty straight forward.
http://www.drybydesign.com/2010/02/26/adobe-air-alivepdf-without-flex/
One of the other teams where I work is working on a Flex-based drawing application and they were totally surprised that AIR / Flex does not have PDF authoring built-in. They ended up rolling their own simple PDF creator based on the PDF specification.
Yes it is very easy to create PDF using AlivePDF, here is the sample code, first method create a pdf and second method save the pdf on disk and return the path, feel free to ask any question.
public function createFlexPdf() : String
{
pdf = new PDF();
pdf.setDisplayMode (Display.FULL_WIDTH,Layout.ONE_COLUMN,Mode.FIT_TO_PAGE,0.96);
pdf.setViewerPreferences(ToolBar.SHOW,MenuBar.HIDE,WindowUI.SHOW,FitWindow.RESIZED,CenterWindow.CENTERED);
pdf.addPage();
var myFontStyle:IFont = new CoreFont ( FontFamily.COURIER );
pdf.setFont(myFontStyle,10);
pdf.addText('Kamran Aslam',10,20);//String, X-Coord, Y-Coord
return savePDF();
}
private function savePDF():String
{
var fileStream:FileStream = new FileStream();
var file:File = File.createTempDirectory();
file = file.resolvePath("temp.pdf");
fileStream.open(file, FileMode.WRITE);
var bytes:ByteArray = pdf.save(Method.LOCAL);
fileStream.writeBytes(bytes);
fileStream.close();
return file.url;
}