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

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form2 fr = new Form2();
            fr.Show();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Form3 fr3 = new Form3();
            fr3.Show();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            Form4 fr4 = new Form4();
            fr4.Show();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            Form5 fr5 = new Form5();
            fr5.Show();
        }
    }
}
 

執行結果：

/*
 * 編寫一個能夠顯示正弦曲線的Windows應用程式。
 */
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.Drawing2D;

namespace WindowsFormsApplication1
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void Form2_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            Pen p = new Pen(Color.Black, 1.0f);
            p.EndCap = LineCap.ArrowAnchor;
            g.DrawLine(p, new Point(50, 150), new Point(250, 150));
            Pen p1 = new Pen(Color.Black, 1.0f);
            p1.StartCap = LineCap.ArrowAnchor;
            g.DrawLine(p1, 150, 50, 150, 250);
            Pen p2 = new Pen(Color.Black, 1.0f);
            Point[] points = { new Point(50, 100), new Point(100, 200), new Point(200, 100), new Point(250, 200) };
            g.DrawCurve(p2, points, 0.8f);
        }
    }
}
 

執行結果：

//編寫一個Windows應用程式，實現從白色到綠色漸變的背景。
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.Drawing2D;

namespace WindowsFormsApplication1
{
    public partial class Form3 : Form
    {
        public Form3()
        {
            InitializeComponent();
        }

        private void Form3_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            LinearGradientBrush brush = new LinearGradientBrush(this.ClientRectangle, Color.White, Color.Green, LinearGradientMode.Vertical);
            g.FillRectangle(brush, this.ClientRectangle);
            g.Dispose();
        }
    }
}
 

執行結果：

/*
 * 編寫一個應用程式，利用Graphics物件的DrawString方法在窗體上繪製文字“山東省煙臺大學”，要求文字用一副圖片填充。
 */
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.Drawing2D;

namespace WindowsFormsApplication1
{
    public partial class Form5 : Form
    {
        public Form5()
        {
            InitializeComponent();
        }

        private void Form5_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            Image imag = Image.FromFile(Application.StartupPath + @"\20.png");
            TextureBrush brush = new TextureBrush(imag);
            Font font = new Font("楷體", 25, FontStyle.Underline ^ FontStyle.Bold);
            g.DrawString("山東省煙臺大學", font, brush, new Point(10, 100));
        }
    }
}

執行結果：