求大神 帮忙 捉急啊
哪里出错了 在textbox中输入坐标 为毛坐标图上没有点·····
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 mianjian
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void panel1_Paint(object sender, PaintEventArgs e)
{
XYLinesFactory.DrawXY(panel1);
XYLinesFactory.DrawYLine(panel1, 45, 85, 8);
XYLinesFactory.DrawXLine(panel1,18,4,14);
}
private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
string[] ss = textBox1.Text.Trim().Split(new char[] { ',' });
int x = Convert.ToInt32(ss[0]);
int y = Convert.ToInt32(ss[1]);
Graphics g = textBox1.CreateGraphics();
g.FillEllipse(Brushes.Red, new Rectangle(4, 45, x, y));
}
}
}
class XYLinesFactory
{
#region 画出X轴与Y轴
/// <summary>
/// 在任意的panel里画一个坐标，坐标所在的四边形距离panel边52像素
/// </summary>
/// <param name="pan"></param>
public static void DrawXY(Panel pan)
{
Graphics g = pan.CreateGraphics();
//整体内缩move像素
float move = 52f;
float newX = pan.Width - move;
float newY = pan.Height - move;
//绘制X轴,
PointF px1 = new PointF(move, newY);
PointF px2 = new PointF(newX, newY);
g.DrawLine(new Pen(Brushes.Black, 2), px1, px2);
//绘制Y轴
PointF py1 = new PointF(move, move);
PointF py2 = new PointF(move, newY);
g.DrawLine(new Pen(Brushes.Black, 2), py1, py2);
}
#endregion
#region
/// <summary>
/// 画出X轴上的分值线，从零开始
/// </summary>
/// <param name="pan"></param>
/// <param name="maxX"></param>
/// <param name="len"></param>
public static void DrawXLine(Panel pan, float minX, float maxX, int len)
{
float move = 50f;
float LenX = pan.Width - 2 * move;
float LenY = pan.Height - 2 * move;
Graphics g = pan.CreateGraphics();
for (int i = 0; i <= len; i++) //len等份X轴
{
PointF py1 = new PointF(LenX * i / len + move, pan.Height - move - 4);
PointF py2 = new PointF(LenX * i / len + move, pan.Height - move);
string sx = (maxX - (maxX - minX) * i / len).ToString();
g.DrawLine(new Pen(Brushes.Black, 2), py1, py2);
g.DrawLine(new Pen(Brushes.Black, 2), py1, py2);
g.DrawString(sx, new Font("宋体", 8f), Brushes.Black, new PointF(LenX * i / len + move, pan.Height - move / 1.1f));
}
Pen pen = new Pen(Color.Black, 1);
g.DrawString("X轴", new Font("宋体 ", 10f), Brushes.Black, new PointF(pan.Width - move / 1.5f, pan.Height - move / 1.5f));
}
#endregion
#region 画出Y轴上的分值线，从任意值开始
/// <summary>
/// 画出Y轴上的分值线，从任意值开始
/// </summary>
/// <param name="pan"></param>
/// <param name="minY"></param>
/// <param name="maxY"></param>
/// <param name="len"></param>
public static void DrawYLine(Panel pan, float minY, float maxY, int len)
{
float move = 50f;
float LenX = pan.Width - 2 * move;
float LenY = pan.Height - 2 * move;
Graphics g = pan.CreateGraphics();
for (int i = 0; i <= len; i++) //len等份Y轴
{
PointF px1 = new PointF(move, LenY * i / len + move);
PointF px2 = new PointF(move + 4, LenY * i / len + move);
string sx = (maxY - (maxY - minY) * i / len).ToString();
g.DrawLine(new Pen(Brushes.Black, 2), px1, px2);
StringFormat drawFormat = new StringFormat();
drawFormat.Alignment = StringAlignment.Far;
drawFormat.LineAlignment = StringAlignment.Center;
g.DrawString(sx, new Font("宋体", 8f), Brushes.Black, new PointF(move / 1.2f, LenY * i / len + move * 1.1f), drawFormat);
}
Pen pen = new Pen(Color.Black, 1);
g.DrawString("Y轴", new Font("宋体 ", 10f), Brushes.Black, new PointF(move / 3, move / 2f));
}
#endregion
}
}
public static void DrawXY(Graphics g)
{
//删除
// Graphics g = pan.CreateGraphics();
...
}
//全部替换成这个参数
public static void DrawXLine(Graphics g, float minX, float maxX, int len);
public static void DrawYLine(Graphics g, float minY, float maxY, int len)
private void panel1_Paint(object sender, PaintEventArgs e)
{
Graphics g=e.Graphics;
XYLinesFactory.DrawXY(g);
XYLinesFactory.DrawYLine(g, 45, 85, 8);
XYLinesFactory.DrawXLine(g,18,4,14);
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
Draw(e.Graphics);
}
private void Draw(Graphics g)
{
//绘图代码
}
private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
this.Invalidate();
}
点是text1里，输入坐标回车后有，应该将textBox1-->panel1
int x = Convert.ToInt32(ss[0]);
int y = Convert.ToInt32(ss[1]);
Graphics g =panel1.CreateGraphics();
