给你完整做了一个
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Q717883
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
currPt = new Point(0, 0);
}
private Point currPt { get; set; }
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
e.Graphics.FillRectangle(Brushes.White, pictureBox1.DisplayRectangle);
foreach (var line in textBox1.Lines.Select(x => x.ToLower().Trim()).Where(x => x != ""))
{
if (line.StartsWith("moveto"))
{
int x = int.Parse(line.Replace("moveto", "").Replace(" ", "").Trim().Split(',')[0]);
int y = int.Parse(line.Replace("moveto", "").Replace(" ", "").Trim().Split(',')[1]);
currPt = new Point(x, y);
}
else if (line.StartsWith("circle"))
{
int r = int.Parse(line.Replace("circle", "").Trim().Split(',')[0]);
e.Graphics.DrawEllipse(Pens.Black, currPt.X - r, currPt.Y - r, r + r, r + r);
}
}
}
private void button1_Click(object sender, EventArgs e)
{
pictureBox1.Refresh();
}
}
}
namespace Q717883
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(11, 14);
this.textBox1.Multiline = true;
this.textBox1.Name = "textBox1";
this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Both;
this.textBox1.Size = new System.Drawing.Size(207, 386);
this.textBox1.TabIndex = 0;
this.textBox1.Text = "moveTo 100,100\r\ncircle 20";
//
// button1
//
this.button1.Location = new System.Drawing.Point(130, 408);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(87, 26);
this.button1.TabIndex = 1;
this.button1.Text = "draw";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// pictureBox1
//
this.pictureBox1.Location = new System.Drawing.Point(227, 15);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(473, 418);
this.pictureBox1.TabIndex = 2;
this.pictureBox1.TabStop = false;
this.pictureBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.pictureBox1_Paint);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(714, 446);
this.Controls.Add(this.pictureBox1);
this.Controls.Add(this.button1);
this.Controls.Add(this.textBox1);
this.Name = "Form1";
this.Text = "Form1";
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.PictureBox pictureBox1;
}
}
