CODEWITHSUNDEEP
c#winformspicturebox
Eitan Yona
Eitan Yona

Reputation: 75

how to draw a square in to a PictureBox?

I have a problem with my C# Windows-Forms project. I am trying to draw a square and I want to display the square inside a picture-box. How can I do that?

This is my function for drawing the square:

public void DrawingSquares(int x, int y)//the function gets x and y to know where to print the square.
    {
        Graphics graphicsObj;
        graphicsObj = this.CreateGraphics();
        Pen myPen = new Pen(Color.Black, 5);
        Rectangle myRectangle = new Rectangle(x, y, 100, 100);
        graphicsObj.DrawRectangle(myPen, myRectangle);
    }

Upvotes: 1

Views: 11684

Answers (3)

Pascal
Pascal

Reputation: 2214

my vs solution

using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
    public Form1()
    {
        InitializeComponent();

        this.pictureBox1.Image = this.Draw(this.pictureBox1.Width, this.pictureBox1.Height);
    }

    public Bitmap Draw(int width, int height)
    {
        var bitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb);
        var graphics = Graphics.FromImage(bitmap);
        graphics.SmoothingMode = SmoothingMode.AntiAlias;
        graphics.FillRectangle(new SolidBrush(Color.Tomato), 10, 10, 100, 100);

        return bitmap;
    }
  }
}

this is my Form1.cs

you should have something simillar

Upvotes: 2

ApprenticeHacker
ApprenticeHacker

Reputation: 22011

You must add a PaintEventHandler inside your picture box and draw the rectangle inside it:

private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
    ...
    e.Graphics.DrawRectangle(myPen, myRectangle);
}

Upvotes: 1

Pascal
Pascal

Reputation: 2214

public Bitmap Draw()
{
   var bitmap = new Bitmap(width,height, PixelFormat.Format32bppArgb);
   var graphics = Graphics.FromImage(bitmap);
   graphics.SmoothingMode = SmoothingMode.AntiAlias;
   graphics.FillRectangle(new SolidBrush(Color.Tomato), 10, 10, 100, 100);
}

this.pictureBox1.Image = new PieChart().Draw();

so if you just return a bitmap, it works

Upvotes: -1

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