How to create a triangle in Visual Studio?

Tonny Petkova

6y5.3k

I want to create a triangle with Windows Form in Visual Studio (c# code). In Form1 I have 3 textboxes that the user enters the lengths of the sides of the triangle and 1 "Enter" button. When the button is pressed, Form2 is opened and a triangle is drawn when the mouse is clicked. Can somebody help me?

7 Replies

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Derek Stevens5y ago
If you want to draw shapes and figures, you can try the Leadtools annotations SDK (https://www.leadtools.com/sdk/annotation). I've used them before and they have a lot of options for customizing how they are rendered and behave. It supports WinForms, but also JavaScript like on their live demo (https://demo.leadtools.com/JavaScript/Annotations/)

Here's a tutorial they have for WinForms:
https://www.leadtools.com/help/sdk/v21/tutorials/dotnet-winforms-draw-and-edit-annotations-on-images.html
Rikam Palkar6y ago
1. <Polygon
2. Points="0,0 80,50, 0,100"
3. Stroke="Gray"
4. StrokeThickness = "2"
5. Fill="Black" />
Change Stroke, fill colors as per your requirements.

Rajanikant Hawaldar6y ago

You can pass inputs from textbook to System.Drawing.Rectangle( method on click of button as you said

Tonny Petkova6y ago

I don't know how write it without:

System.Drawing.Rectangle rectangle = new System.Drawing.Rectangle( 50, 50, 150, 150);

how i write it with use textboxes..?

Rajanikant Hawaldar6y ago

https://docs.microsoft.com/en-us/previous-versions/visualstudio/visual-studio-2008/sfwzeec0(v=vs.90)?redirectedfrom=MSDN

Amit Gupta6y ago

You can use Graphics class to draw a triangle.

Jignesh Kumar6y ago

Hi,

Please use this link which will guide you,

http://csharpdevelopertool.blogspot.com/2012/02/draw-triangle-on-form-using-cnet.html

https://docs.microsoft.com/en-us/dotnet/framework/winforms/advanced/how-to-draw-an-outlined-shape