Printscreen & Then Save JPG

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

the quality of the jpg is 50%

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

Code:

---

/// <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:

Code:

---

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 :)

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?)

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;

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

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

VB Code:

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:

VB Code:

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.

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 :D

here's a sample project:)

thanks

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/