设立三种事件结果只能应用其中一种，迷茫中.........

Question

我设立了三种事件                      switch (this.iFlag)
              {
                case 1: g.FillEllipse(MyBrush, this.button1.ClientRectangle);
                    break;
                case 2: g.FillEllipse(MyBrush, (this.button1.Width - this.button1.Height)
                     / 2, 0, this.button1.Height, this.button1.Height);
                    break;
                case 3: g.FillPie(MyBrush, 0, 0, this.button1.Width, this.button1.Height,
                     60, 240);
                    break;
               }
          
用三个button来选择，但是当定义iFlag时
                        private System.Int32 iFlag = 2;iFlag =（）  只能选择一种事件，这样一来form上的三个button来选择就不起作用了，我应该如何定义iFlag才能避免这个问题呢？

Answer 1

在Button1_Click里面写
iFlag = 1;
然后再调用上面的代码。其余类似。

Answer 2

       private void button3_Click(object sender, System.EventArgs e)
        {
            this.iFlag = 1;
            this.button2.Refresh();        }        private void button4_Click(object sender, System.EventArgs e)
        {
            this.iFlag = 2;
            this.button2.Refresh();        }        private void button5_Click(object sender, System.EventArgs e)
        {
            this.iFlag = 3;
            this.button2.Refresh();        }
我都定义过了，但它最后只默认  “private System.Int32 iFlag = 2;” 我填写的值

Answer 3

      private void button3_Click(object sender, System.EventArgs e) 
        { 
            this.iFlag = 1; 
            this.button3.Refresh();         }         private void button4_Click(object sender, System.EventArgs e) 
        { 
            this.iFlag = 2; 
            this.button4.Refresh();         }         private void button5_Click(object sender, System.EventArgs e) 
        { 
            this.iFlag = 3; 
            this.button5.Refresh();         } 

Answer 4

还是不好使！
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 button1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
        {
            if (this.StrFileName.Trim() == "")
                return;
            System.Drawing.Bitmap MyBitmap = new Bitmap(this.StrFileName);
            Graphics g = e.Graphics;
            TextureBrush MyBrush = new TextureBrush(MyBitmap);
            switch (this.iFlag)
            {
                case 1: 
                    g.FillEllipse(MyBrush, this.button1.ClientRectangle);
                    break;
                case 2: 
                    g.FillEllipse(MyBrush, (this.button1.Width - this.button1.Height)
                     / 2, 0, this.button1.Height, this.button1.Height);
                    break;
                case 3: 
                    g.FillPie(MyBrush, 0, 0, this.button1.Width, this.button1.Height,
                     60, 240);
                    break;
        }        }
        private void button3_Click(object sender, System.EventArgs e)
        {
            this.iFlag = 1;
            this.button3.Refresh();        }        private void button4_Click(object sender, System.EventArgs e)
        {
            this.iFlag = 2;
            this.button4.Refresh();        }        private void button5_Click(object sender, System.EventArgs e)
        {
            this.iFlag = 3;
            this.button5.Refresh();        }
        private System.String StrFileName = "";
        private System.Int32 iFlag = 3;        private void button2_Click(object sender, System.EventArgs e)
        {
            this.openFileDialog1.ShowDialog();
            this.StrFileName = this.openFileDialog1.FileName;
            this.button2.Refresh();
        }        private void button1_Click(object sender, EventArgs e)
        {        }   
             
    }
}现在是在“private System.Int32 iFlag = 2;”设定下的形状能够回到事件1的设置，再往下选择就又不好使了！

Answer 5

晕 没看明白  是不是要3个button都想用到button1_Paint事件？？
如果是的话就这样
给个例子
        private void Form6_Load(object sender, EventArgs e)
        {
            this.button1.Paint += new PaintEventHandler(MyButton_Paint);
            this.button2.Paint += new PaintEventHandler(MyButton_Paint);
            this.button3.Paint += new PaintEventHandler(MyButton_Paint);
        }        private void MyButton_Paint(object sender, PaintEventArgs e)
        {
            //code
        }这样就可以了
没看懂你说的意思。。