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Application Snapshot

    Question

  • Can someone show me how to programmatically take a snapshot of ONLY the application and then save the file to a location? I only want the application in the image. Thank you guys.
    Monday, November 10, 2008 3:44 PM

Answers

  • Create a bitmap that's large enough to contain every window in your app.  Use Graphics.FromImage() to get a Graphics object, then Graphics.CopyFromScreen().  This is easy to do if you only have one window:

        private void button1_Click(object sender, EventArgs e) {
          using (Bitmap bmp = new Bitmap(this.Width, this.Height)) {
            using (Graphics gr = Graphics.FromImage(bmp)) {
              gr.CopyFromScreen(this.Left, this.Top, 0, 0, this.Size);
              bmp.Save(@"c:\temp\screenshot.png");
            }
          }
        }

    Monday, November 10, 2008 4:01 PM
    Moderator
  • If your application is using only one form, then this will create an image of just your application:

    private void button1_Click(object sender, EventArgs e)
    {
        // create a new Bitmap object the size of the form
        using (Bitmap bmp = new Bitmap(this.Width, this.Height))
        {
            // use the DrawToBitmap() method
            this.DrawToBitmap(bmp, new Rectangle(0, 0, this.Width, this.Height));

            // save the Bitmap somewhere.
            bmp.Save(@"C:\this.bmp");
        }
    }

    As far as your problem with "using", it could have to do with incorrect punctuation (ie, having ";" at the end of the using line)
    Read more about using here: http://msdn.microsoft.com/en-us/library/yh598w02(VS.80).aspx

    If you don't want to use "using", be sure to dispose of you bitmap object.  So the above could also be written as so:

    private void (button1_Click(object sender, EventArgs e)
    {
        Bitmap bmp = new Bitmap(this.Width, this.Height);

        this.DrawToBitmap(bmp, new Rectangle(0, 0, this.Width, this.Height));

        bmp.Save(@"C:\this.bmp");

        bmp.Dispose();
    }
    Monday, November 10, 2008 8:02 PM

All replies

  • Create a bitmap that's large enough to contain every window in your app.  Use Graphics.FromImage() to get a Graphics object, then Graphics.CopyFromScreen().  This is easy to do if you only have one window:

        private void button1_Click(object sender, EventArgs e) {
          using (Bitmap bmp = new Bitmap(this.Width, this.Height)) {
            using (Graphics gr = Graphics.FromImage(bmp)) {
              gr.CopyFromScreen(this.Left, this.Top, 0, 0, this.Size);
              bmp.Save(@"c:\temp\screenshot.png");
            }
          }
        }

    Monday, November 10, 2008 4:01 PM
    Moderator
  • Hi, i'm still really new to programming. Why is it when I type "using", then intellisense stops working for everything else. Should it not be "using"?
    Monday, November 10, 2008 4:11 PM
  • Please start a new thread for your new question.
    Monday, November 10, 2008 4:17 PM
    Moderator
  • Why would I start a new thread? That question pertains to your reply to my first question. It's all about the same question...I was only asking what you meant in your reply...
    Monday, November 10, 2008 4:20 PM
  • If your application is using only one form, then this will create an image of just your application:

    private void button1_Click(object sender, EventArgs e)
    {
        // create a new Bitmap object the size of the form
        using (Bitmap bmp = new Bitmap(this.Width, this.Height))
        {
            // use the DrawToBitmap() method
            this.DrawToBitmap(bmp, new Rectangle(0, 0, this.Width, this.Height));

            // save the Bitmap somewhere.
            bmp.Save(@"C:\this.bmp");
        }
    }

    As far as your problem with "using", it could have to do with incorrect punctuation (ie, having ";" at the end of the using line)
    Read more about using here: http://msdn.microsoft.com/en-us/library/yh598w02(VS.80).aspx

    If you don't want to use "using", be sure to dispose of you bitmap object.  So the above could also be written as so:

    private void (button1_Click(object sender, EventArgs e)
    {
        Bitmap bmp = new Bitmap(this.Width, this.Height);

        this.DrawToBitmap(bmp, new Rectangle(0, 0, this.Width, this.Height));

        bmp.Save(@"C:\this.bmp");

        bmp.Dispose();
    }
    Monday, November 10, 2008 8:02 PM