Form1 × Function: 000 Draw 000

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question

simple utitly curve 

i have this code 

using System;
using System.Data;
using System.Drawing;
using System.Windows.Forms;

namespace WindowsFormsApp11
{
    public partial class Form1 : Form
    {
        private PictureBox displayArea;
        private TextBox functionInput;
        private Button drawButton;
        private Label functionLabel;

        public Form1()
        {
            InitializeComponent();
        }

        private void InitializeComponent()
        {
            this.displayArea = new System.Windows.Forms.PictureBox();
            this.functionInput = new System.Windows.Forms.TextBox();
            this.drawButton = new System.Windows.Forms.Button();
            this.functionLabel = new System.Windows.Forms.Label();
            ((System.ComponentModel.ISupportInitialize)(this.displayArea)).BeginInit();
            this.SuspendLayout();

            // 
            // displayArea
            // 
            this.displayArea.BackColor = System.Drawing.Color.White;
            this.displayArea.Location = new System.Drawing.Point(10, 10);
            this.displayArea.Name = "displayArea";
            this.displayArea.Size = new System.Drawing.Size(400, 300);
            this.displayArea.TabIndex = 0;
            this.displayArea.TabStop = false;

            // 
            // functionInput
            // 
            this.functionInput.Location = new System.Drawing.Point(80, 320);
            this.functionInput.Name = "functionInput";
            this.functionInput.Size = new System.Drawing.Size(230, 22);
            this.functionInput.TabIndex = 2;

            // 
            // drawButton
            // 
            this.drawButton.Location = new System.Drawing.Point(320, 320);
            this.drawButton.Name = "drawButton";
            this.drawButton.Size = new System.Drawing.Size(90, 22);
            this.drawButton.TabIndex = 3;
            this.drawButton.Text = "Draw";
            this.drawButton.Click += new System.EventHandler(this.DrawButton_Click);

            // 
            // functionLabel
            // 
            this.functionLabel.AutoSize = true;
            this.functionLabel.Location = new System.Drawing.Point(10, 320);
            this.functionLabel.Name = "functionLabel";
            this.functionLabel.Size = new System.Drawing.Size(60, 16);
            this.functionLabel.TabIndex = 1;
            this.functionLabel.Text = "Function:";

            // 
            // Form1
            // 
            this.ClientSize = new System.Drawing.Size(430, 380);
            this.Controls.Add(this.displayArea);
            this.Controls.Add(this.functionLabel);
            this.Controls.Add(this.functionInput);
            this.Controls.Add(this.drawButton);
            this.Name = "Form1";
            this.Text = "Function Curve Drawer";
            ((System.ComponentModel.ISupportInitialize)(this.displayArea)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();
        }

        private void DrawButton_Click(object sender, EventArgs e)
        {
            DrawFunction();
        }

        private void DrawFunction()
        {
            try
            {
                using (Graphics g = this.displayArea.CreateGraphics())
                {
                    g.Clear(Color.White);
                    Pen pen = new Pen(Color.Black);

                    for (int x = 0; x < this.displayArea.Width; x++)
                    {
                        double yValue = Math.Sin(x * 0.05); // Example function (sinusoidal)
                        int y = (int)(100 * yValue);
                        g.DrawRectangle(pen, x, this.displayArea.Height / 2 - y, 1, 1);
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error drawing function: " + ex.Message);
            }
        }

        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

i have error cs1061

i have error cs0121

i have error cs0111

the image is the design

Form1
×
Function:
000
Draw
000
Transcribed Image Text:Form1 × Function: 000 Draw 000
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