Program Dosnt let to print a rectangle - c#

Question

I have A program where i want to print an image to the form( in this case a coin) But The Program wont let me do that. it stops at the last line the crash is ArgumentException

heres The Code:

Random _Random = new Random();
            Image _CoinImage;
            int height;
            int width;
            Graphics g;
            public Coin(int Height,int Width,Graphics gr)
            {
                _CoinImage = Properties.Resources.Coin;
                height = Height;
                width = Width;
                g = gr;//gr = the form paint
                CoinRec = new Rectangle(0, 0, width, Height);
                g.DrawImage(_CoinImage, CoinRec); //Crashes Here
            }

What's the exact nature of the "crash"? Is an exception raised? If so which one? — ChrisF, Jul 19 '16 at 19:52
Why CoinRec = new Rectangle(0, 0, width, Height); is like this? width with lower case and Height uppercase? — klaymen, Jul 19 '16 at 19:57
@klaymen I suspect that's a typo. The code wouldn't compile. — ChrisF, Jul 19 '16 at 19:59

score 2 · Answer 1 · edited May 23 '17 at 12:08

2

The only overload of DrawImage that takes an Image and a Rectangle raises ArgumentNullException if the image is null:

ArgumentNullException image is null.

Either check that the image has been loaded correctly and don't call DrawImage or trap the exception. Which you do depends on how likely it is that the image is null.

As Marcelo points out in his comment you aren't loading the image correctly which is why it's null.

As the accepted answer to that question shows you need to load it like this:

var bmp = new Bitmap(WindowsFormsApplication1.Properties.Resources.myimage);

edited May 23 '17 at 12:08

Community

1
1

answered Jul 19 '16 at 19:58

ChrisF

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Complementing @ChrisF's suggestion, to properly load an image from a project's Properties, take a look at [this answer](https://stackoverflow.com/questions/1192054/load-image-from-resources-area-of-project-in-c-sharp). – marcelovca90 Jul 19 '16 at 20:01
Its definitely not Null – TheNormalPerson Jul 19 '16 at 20:04

Program Dosnt let to print a rectangle - c#

1 Answers1