2. Изчертаване на линия
1 задача: Изчертаване на линия с координати на крайните точки :(10, 10), (100, 100).
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication24
{
public partial class Form1 : Form
{
protected override void OnPaint(PaintEventArgs e)
{
Graphics g = e.Graphics;
g.Clear(Color.FromArgb(255, 255, 255));
Pen pen = new Pen(Color.Red, 2);
g.DrawLine(pen, 10, 10, 100, 100);
}
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
I начин: Формата е чертожно поле.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication24
{
public partial class Form1 : Form
{
protected override void OnPaint(PaintEventArgs e)
{
Graphics g = e.Graphics;
g.Clear(Color.FromArgb(255, 255, 255));
Pen pen = new Pen(Color.Red, 2);
g.DrawLine(pen, 10, 10, 100, 100);
}
public Form1()
{
InitializeComponent();
}
}
}
II начин: Чертожно поле е pictureBox1.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
namespace line_ok
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent(); Draw();
}
public void Draw()
{
Bitmap bmp = new Bitmap(pictureBox1.Width, pictureBox1.Height);
Graphics graph = Graphics.FromImage(bmp);
Pen pen = new Pen(Color.Black);
graph.DrawLine(pen, 10, 10, 100, 100);
pictureBox1.Image = bmp;
}
}
}
2 задача: Да се изчертае линия по зададени координати на крайните точки.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication25
{
public partial class Form1 : Form
{
int x1,y1,x2,y2;
public Form1()
{
InitializeComponent(); Draw();
}
public void Draw()
{
Bitmap bmp = new Bitmap(pictureBox1.Width, pictureBox1.Height);
Graphics graph = Graphics.FromImage(bmp);
Pen pen = new Pen(Color.Black);
graph.DrawLine(pen, x1, y1, x2, y2);
pictureBox1.Image = bmp;
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
x1 = int.Parse(textBox1.Text);
y1 = int.Parse(textBox2.Text);
x2 = int.Parse(textBox3.Text);
y2 = int.Parse(textBox4.Text);
Draw();
}
}
}