Crystal Report - C# Discussion Boards

OnPaintBackground Problem.

14-May-08 1:37

You need to do this by inspecting the website using the DOM. It's not a simple thing, the web browser is it's own world, it doesn't expose stuff like a windows app

Christian Graus

Please read this if you don't understand the answer I've given you

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Crystal Report

mehrdadc4814-May-08 0:40

mehrdadc48

14-May-08 0:40

Hi,
I'm using an Access file as data source of a crystal report Report, in my computer all is ok, but when install my application in another system, because the path of mdb file changes, the report don't work?
how can give a related path in crystal report or force it to read the path from a setting file?

Best wishes

Re: Crystal Report

ChandraRam14-May-08 1:20

ChandraRam

14-May-08 1:20

mehrdadc48 wrote:
I'm using an Access file as data source of a crystal report Report, in my computer all is ok, but when install my application in another system, because the path of mdb file changes, the report don't work?
how can give a related path in crystal report or force it to read the path from a setting file?

You will need to define the connection parameters to the report within your code.

HTH.

hdv21214-May-08 0:21

hdv212

14-May-08 0:21

hi i need a control that display my image maps and panning and zooming it in my control.
i was create a userControl named ImageMap, and add a panel to it and set Doc to Fill and wrote this code to get result :

public partial class ImageMap : UserControl<br />
    {        <br />
        Bitmap bitmap;        <br />
        BufferedGraphicsContext currentContext;<br />
        BufferedGraphics myBuffer;  <br />
        PointF viewPortCenter;<br />
        float Zoom = 1.0f;<br />
<br />
        bool draging = false;<br />
        Point lastMouse;<br />
        public static Rectangle rec;<br />
<br />
<br />
        public ImageMap()<br />
        {<br />
            InitializeComponent();<br />
            currentContext = BufferedGraphicsManager.Current;<br />
            setup(false);<br />
            rec = this.panel1.DisplayRectangle;<br />
        }        <br />
<br />
        private void setup(bool resetViewport)<br />
        {            <br />
            if (myBuffer != null)<br />
                myBuffer.Dispose();<br />
            myBuffer = currentContext.Allocate(this.panel1.CreateGraphics(), this.panel1.DisplayRectangle);<br />
            if (bitmap != null)<br />
            {<br />
                if (resetViewport)<br />
                    SetViewPort(new RectangleF(0, 0, bitmap.Width, bitmap.Height));                <br />
            }            <br />
            this.panel1.Focus();<br />
            this.panel1.Invalidate();<br />
        }   <br />
     <br />
        private void SetViewPort(RectangleF worldCords)<br />
        {           <br />
           //Find smallest screen extent and zoom to that<br />
            if (worldCords.Height > worldCords.Width)<br />
            {<br />
                //Use With as limiting factor<br />
                this.Zoom = worldCords.Width / bitmap.Width;<br />
            }<br />
            else<br />
                this.Zoom = worldCords.Height / bitmap.Height;<br />
<br />
            viewPortCenter = new PointF(worldCords.X +(worldCords.Width / 2.0f), worldCords.Y + (worldCords.Height / 2.0f));<br />
            <br />
        }        <br />
<br />
        private void PaintImage()<br />
        {<br />
            if (bitmap != null)<br />
            {<br />
                float widthZoomed = panel1.Width / Zoom;<br />
                float heigthZoomed = panel1.Height / Zoom;<br />
<br />
                //Do checks the reason 30,000 is used is because much over this will cause DrawImage to crash<br />
                if (widthZoomed > 30000.0f)<br />
                {<br />
                    Zoom = panel1.Width / 30000.0f;<br />
                    widthZoomed = 30000.0f;<br />
                }<br />
                if (heigthZoomed > 30000.0f)<br />
                {<br />
                    Zoom = panel1.Height / 30000.0f;<br />
                    heigthZoomed = 30000.0f;<br />
                }<br />
<br />
                //we stop at 2 because at this point you have almost zoomed into a single pixel<br />
                if (widthZoomed < 2.0f)<br />
                {<br />
                    Zoom = panel1.Width / 2.0f;<br />
                    widthZoomed = 2.0f;<br />
                }<br />
                if (heigthZoomed < 2.0f)<br />
                {<br />
                    Zoom = panel1.Height / 2.0f;<br />
                    heigthZoomed = 2.0f;<br />
                }<br />
<br />
                float wz2 = widthZoomed / 2.0f;<br />
                float hz2 = heigthZoomed / 2.0f;<br />
                Rectangle drawRect = new Rectangle(<br />
                    (int)(viewPortCenter.X - wz2),<br />
                    (int)(viewPortCenter.Y - hz2),<br />
                    (int)(widthZoomed),<br />
                    (int)(heigthZoomed));<br />
<br />
                //this.toolStripStatusLabel1.Text = "DrawRect = " + drawRect.ToString();<br />
<br />
                myBuffer.Graphics.Clear(Color.White); //Clear the Back buffer<br />
<br />
                //Draw the image, Write image to back buffer, and render back buffer<br />
                myBuffer.Graphics.DrawImage(bitmap, this.panel1.DisplayRectangle, drawRect, GraphicsUnit.Pixel);<br />
                myBuffer.Render(this.panel1.CreateGraphics());<br />
            }            <br />
        }<br />
<br />
        protected override void OnBackgroundImageChanged(EventArgs e)<br />
        {<br />
            bitmap = (Bitmap)this.BackgroundImage;<br />
            setup(true);<br />
            base.OnBackgroundImageChanged(e);<br />
        }<br />
<br />
        protected override void OnResize(EventArgs e)<br />
        {<br />
            setup(false);<br />
            base.OnResize(e);<br />
        }<br />
<br />
        private void panel1_Paint(object sender, PaintEventArgs e)<br />
        {            <br />
            PaintImage();<br />
        }<br />
<br />
        private void panel1_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e)<br />
        {<br />
            Zoom += Zoom * (e.Delta / 1200.0f); //the 1200.0f is any-number it just seem to work well so i use it.<br />
            if (e.Delta > 0) //I prefer to use the targe zoom when zooming in only, remove "if" to have it apply to zoom in and out<br />
                viewPortCenter = new PointF(viewPortCenter.X + ((e.X - (panel1.Width / 2)) /(2* Zoom)), viewPortCenter.Y + ((e.Y - (panel1.Height/2)) / (2*Zoom)));                            <br />
            this.panel1.Invalidate();            <br />
        }<br />
<br />
        private void panel1_MouseDown(object sender, MouseEventArgs e)<br />
        {<br />
            if (e.Button == MouseButtons.Left)<br />
                draging = true;<br />
        }<br />
<br />
        private void panel1_MouseMove(object sender, MouseEventArgs e)<br />
        {<br />
            if (draging)<br />
            {<br />
                viewPortCenter = new PointF(viewPortCenter.X + ((lastMouse.X - e.X)/Zoom), viewPortCenter.Y + ((lastMouse.Y- e.Y)/Zoom));                <br />
                panel1.Invalidate();                <br />
            }<br />
            lastMouse = e.Location;<br />
        }<br />
        <br />
        private void panel1_MouseUp(object sender, MouseEventArgs e)<br />
        {<br />
            if (e.Button == MouseButtons.Left)<br />
                draging = false;<br />
        }        <br />
    }

but in runTime, when i panning image in my control, it has a flicker and very bad result, for solve this problem, in top of above code, i define a new class that derived from Panel and wrote this code :

public class overRidePanel : Panel<br />
        {<br />
            protected override void OnPaintBackground(PaintEventArgs pevent) <br />
            {<br />
                <br />
            }<br />
        }

then modify my panel to instanciate from new overRidePanel class, as u can see in above code, i was override OnPaintBackground event only, then run my app, it gave me best result and remove flicker when i panning and zomming my images in app, but when my app run, the ImageMap does not have a any image to display it, and my control in runTime does not display white color correctly(it show back of the my app and not good for me), i want when i start app, it is white color before selecting image, but how to do ?
thanks

Uploading picture to server and display it in an Image control

Dextter14-May-08 0:18

Dextter

14-May-08 0:18

Hello,

I've been trying for while now to upload a picture and get it to be displayed in an Image control. I still can't get the code right. I used

FileUpload1.PostedFile.SaveAs(filepath);
Image1.ImageURL = filepath;

after performing the necessary checks. The ASP.NET debugger says the path format is not supported. I need help.

Thanks.

Obinna from Nigeria.

PS. I'm using VS 2005.

//obinnaaj Eof

Re: Uploading picture to server and display it in an Image control

Christian Graus14-May-08 0:24

How to customize .Net Textbox control

14-May-08 0:24

You need to store it within your web app, then your imageURL needs to be a URL to the file, not a path on the file system. Server.MapPath is how you convert them,

NarVish13-May-08 23:45

NarVish

13-May-08 23:45

In .Net, Text box control is in square shape. I would like to change the shape of the control to Circle from square shape. Is it possible to customize the shape of Textbox control as circle?
Thanks in advance.

dan!sh 13-May-08 23:53

13-May-08 23:53

By overriding OnPaint method

Avoid Google. Use Blackle[^]

Christian Graus13-May-08 23:58

13-May-08 23:58

Not really, no. The textbox in windows sucks because it paints itself often outside it's paint event. It can be done, but it's hard work. Why not just draw a circle of white around the edges of a textbox with no border ?

dan!sh 14-May-08 0:05

14-May-08 0:05

Sorry for wrong reply.

Avoid Google. Use Blackle[^]

Christian Graus14-May-08 0:08

14-May-08 0:08

*grin* for any other control it would probably be right. It still is, excepting that you need to handle a bunch of other events and force repaints, and you'll never get rid of the flicker.

dan!sh 14-May-08 0:11

14-May-08 0:11

Thanks

Meanwhile, was the reply for the earlier thread (disable copy paste) correct?

Avoid Google. Use Blackle[^]

Christian Graus14-May-08 0:22

14-May-08 0:22

Yes, it looked like it to me. I'd have to try it to see if it worked, but that's what I had in mind.

NarVish14-May-08 0:16

NarVish

14-May-08 0:16

Thanks for your reply. But how to draw circle in windows form design? Please guide me.

Christian Graus14-May-08 0:22

Disable copy paste in textbox

14-May-08 0:22

The FillEllipse method of the Graphics class. You'd create a control with a textbox and a circle drawn around it.

D i x y13-May-08 23:08

D i x y

13-May-08 23:08

Hello,
how to disbale copy paste from and to textbox programatically

Re: Disable copy paste in textbox

Harvey Saayman13-May-08 23:17

Harvey Saayman

13-May-08 23:17

hey

you might be able to "catch" the event of(ctrl + c) and (ctrl + v) and not handle it...
that might do the trick

Hav fun

Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
think BIG and kick ASS

you.suck = (you.passion != Programming)

Re: Disable copy paste in textbox

Christian Graus13-May-08 23:17

Re: Disable copy paste in textbox

13-May-08 23:17

You may be able to do this by catching the keystrokes and rejecting them. I don't think there's a paste event. You would probably need to reset the clipboard after a CTRL-Insert or CTRL-C, b/c it's probably already done.

dan!sh 13-May-08 23:43