Increase Dots size in rectangle.

Shashank Sivakoti 1 Reputation point
2022-11-03T19:19:08.297+00:00

Hi Team,

How to increase the white dots sizes? Please refer the attached image.

using System;  
using System.Drawing;  
using System.Drawing.Drawing2D;  
using System.Drawing.Imaging;  
using System.IO;  
static void Main(string[] args)  
{  
//Image image = new Bitmap(1000, 1000, PixelFormat.Format32bppArgb);  
Bitmap bitmap = new Bitmap(100, 100, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);  
Graphics graph = Graphics.FromImage(bitmap);  
Pen pen = new Pen(Brushes.Green);  
Rectangle rect = new Rectangle(0, 0, 100, 100);  
graph.DrawRectangle(pen, rect);  
Brush b = new HatchBrush(HatchStyle.Percent90, Color.Orange, Color.White);  
// Fill rectangle to screen.  
graph.FillRectangle(b, rect);  
bitmap.Save("myImage.png", System.Drawing.Imaging.ImageFormat.Png);  
}

C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
10,503 questions
{count} votes

1 answer

Sort by: Most helpful
  1. Viorel 113.9K Reputation points
    2022-11-03T20:10:01.77+00:00

    I think that you can use a TextureBrush. For example, you can build it dynamically:

    Bitmap bitmap = new Bitmap( 100, 100, System.Drawing.Imaging.PixelFormat.Format32bppPArgb );  
      
    Graphics graph = Graphics.FromImage( bitmap );  
    Rectangle rect = new Rectangle( 0, 0, 100, 100 );  
      
    using( var img = new Bitmap( 8, 8, graph ) )  
    {  
        using( var g = Graphics.FromImage( img ) )  
        {  
            g.Clear( Color.Orange );  
            g.FillRectangle( Brushes.White, 0, 6, 2, 2 );  
            g.FillRectangle( Brushes.White, 4, 3, 2, 2 );  
        }  
      
        var tb = new TextureBrush( img );  
      
        graph.FillRectangle( tb, rect );  
    }  
      
    bitmap.Save( "myImage.png", System.Drawing.Imaging.ImageFormat.Png );  
    

    You can load the texture brush from an existing image too, made by a Graphical Editor or Visual Studio, saved as a file or embedded resource.

    It is also possible to scale it using tb.ScaleTransform.