Printscreen & Then Save JPG

[ayman_rapper]

how i would save my screen as a Jpg image ...

the quality of the jpg is 50%

[MrPolite]

dunno about the print screen. But to save a jpeg with a certain quality:

/// <summary>
		/// Only for JPEG format.
		/// </summary>
		/// <param name="quality">from 0 to 100.</param>
		public static void GetImgQualityParams (int quality, out ImageCodecInfo imageCodec, out EncoderParameters encoderParams)
		{
			if (quality<0  ||  quality>100)
				throw new ArgumentOutOfRangeException("quality must be between 0 and 100.");

			// Get an array of ImageEncoders.
			ImageCodecInfo[] imgCodecs = ImageCodecInfo.GetImageEncoders();
			encoderParams = new EncoderParameters(1);
			
			EncoderParameter imgQuality = 
				new EncoderParameter (Encoder.Quality, quality);


			// Set the quality
			encoderParams.Param[0] = imgQuality;
			// JPEG format is index 1
			imageCodec = imgCodecs[1];
		}

you have that function and as an example you could use it like this:

Image img = img.FromFile ("c:\\whatnot.bmp");
ImageCodecInfo codecInfo=null;
EncoderParameters encoderParams=null;
GetImgQualityParams (batchInfo.JpegQuality, out codecInfo, out encoderParams);	
img.Save ("C:\\whatnot.jpg", codecInfo, encoderParams);

hope it helps

[ayman_rapper]

Error 1 The type or namespace name 'ImageCodecInfo' could not be found (are you missing a using directive or an assembly reference?)

Error 2 The type or namespace name 'EncoderParameters' could not be found (are you missing a using directive or an assembly reference?)

[MrPolite]

learn to use the Object Browser in vs.net, it's helpful
you need to import a namespace:
put this at the top of the code
using System.Drawing.Imaging;

[ayman_rapper]

Still there are some problems ...
pls attach a sample for the code ..
and thank u .........

[jmcilhinney]

You can try this line of code to get a screenshot:

SendKeys.Send("+({PRTSC})");

which sends the keystroke combination Shift+PrintScreen to your application. This should capture the entire screen. If you want just your app window, try this instead:

SendKeys.Send("{PRTSC}");

You can then access the image via the clipboard. Lookup the Clipboard class in the help to learn how to retrieve the image.

[MrPolite]

sendkeys is SLIGHLY stupid as it makes you modify your clipboard to get the screenshot. But if you don;t know any other way then I guess that's it

here's a sample project

[ayman_rapper]

thanks

[MrPolite]

see this for capturing the screen, if you want to do it the "right" way. it uses windows API calls:
http://www.developerfusion.com/show/4630/