10/29 按鈕3*3

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
    {
        System.Windows.Forms.Button[] Buttons;
        System.Windows.Forms.TextBox[] TextBoxs;
        int bno;
        int[,] a = new int[4, 4];
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            Buttons = new System.Windows.Forms.Button[9];
            TextBoxs = new System.Windows.Forms.TextBox[9];

            for (int i = 0; i < 9; ++i)
            {
                Buttons[i] = new Button();
                Buttons[i].Click += new System.EventHandler(Buttons_Click);
                this.Controls.Add(Buttons[i]);
                if (i <= 2)
                    Buttons[i].Location = new System.Drawing.Point(10 + i * 80, 10 + 100);
                else if (i > 2 && i <= 5)
                    Buttons[i].Location = new System.Drawing.Point(10 + (i - 3) * 80, 40 + 100);
                else if (i > 5 && i <= 9)
                    Buttons[i].Location = new System.Drawing.Point(10 + (i - 6) * 80, 70 + 100);
            }
            for (int i = 0; i < 9; ++i)
            {
                TextBoxs[i] = new TextBox();
                this.Controls.Add(TextBoxs[i]);
                if (i <= 2)
                    TextBoxs[i].Location = new System.Drawing.Point(10 + i * 100, 10);
                else if (i > 2 && i <= 5)
                    TextBoxs[i].Location = new System.Drawing.Point(10 + (i - 3) * 100, 40);
                else if (i > 5 && i <= 9)
                    TextBoxs[i].Location = new System.Drawing.Point(10 + (i - 6) * 100, 70);
            }
            TextBoxs[0].Text = "7";
            TextBoxs[1].Text = "2";
            TextBoxs[2].Text = "4";
            TextBoxs[3].Text = "5";
            TextBoxs[4].Text = "0";
            TextBoxs[5].Text = "6";
            TextBoxs[6].Text = "8";
            TextBoxs[7].Text = "3";
            TextBoxs[8].Text = "1";
        }
       
        public void Buttons_Click(object sender, EventArgs e)
        {
            // System.Windows.Forms.MessageBox.Show("You have clicked button " +
            //   ((System.Windows.Forms.Button)sender).Tag.ToString());
            String tnum= sender.ToString();
            int tlen = tnum.Length;
           
            String no = tnum.Substring(tlen - 1);
            for (int i = 0; i < 9;i++ )
            {
                if (Buttons[i].Text == no)
                    bno = i;
            }
             switch(bno)
             {
                 case 0:
                     if (Buttons[1].Text == "0")
                     {
                         String temp;
                         temp = Buttons[0].Text;
                         Buttons[0].Text = Buttons[1].Text;
                         Buttons[1].Text = temp;
                     }
                     if (Buttons[3].Text == "0")
                     {
                         String temp;
                         temp = Buttons[0].Text;
                         Buttons[0].Text = Buttons[3].Text;
                         Buttons[3].Text = temp;
                     }
                
                     break;
                 case 1:
                     if (Buttons[4].Text == "0")
                     {
                         String temp;
                         temp = Buttons[4].Text;
                         Buttons[4].Text = Buttons[1].Text;
                         Buttons[1].Text = temp;
                     }
                     if (Buttons[0].Text == "0")
                     {
                         String temp;
                         temp = Buttons[0].Text;
                         Buttons[0].Text = Buttons[1].Text;
                         Buttons[1].Text = temp;
                     }
                     if (Buttons[2].Text == "0")
                     {
                         String temp;
                         temp = Buttons[2].Text;
                         Buttons[2].Text = Buttons[1].Text;
                         Buttons[1].Text = temp;
                     }
                   
                     break;
                 case 2:
                     if (Buttons[1].Text == "0")
                     {
                         String temp;
                         temp = Buttons[2].Text;
                         Buttons[2].Text = Buttons[1].Text;
                         Buttons[1].Text = temp;
                     }
                     if (Buttons[5].Text == "0")
                     {
                         String temp;
                         temp = Buttons[2].Text;
                         Buttons[2].Text = Buttons[5].Text;
                         Buttons[5].Text = temp;
                     }
                    
                     break;                   
                 case 3:
                      if (Buttons[4].Text == "0")
                     {
                         String temp;
                         temp = Buttons[4].Text;
                         Buttons[4].Text = Buttons[3].Text;
                         Buttons[3].Text = temp;
                     }
                     if (Buttons[0].Text == "0")
                     {
                         String temp;
                         temp = Buttons[0].Text;
                         Buttons[0].Text = Buttons[3].Text;
                         Buttons[3].Text = temp;
                     }
                     if (Buttons[6].Text == "0")
                     {
                         String temp;
                         temp = Buttons[6].Text;
                         Buttons[6].Text = Buttons[3].Text;
                         Buttons[3].Text = temp;
                     }
            
                     break;
                 case 4:
                     if (Buttons[1].Text == "0")
                     {
                         String temp;
                         temp = Buttons[1].Text;
                         Buttons[1].Text = Buttons[4].Text;
                         Buttons[4].Text = temp;
                     }
                     if (Buttons[3].Text == "0")
                     {
                         String temp;
                         temp = Buttons[3].Text;
                         Buttons[3].Text = Buttons[4].Text;
                         Buttons[4].Text = temp;
                     }
                     if (Buttons[5].Text == "0")
                     {
                         String temp;
                         temp = Buttons[5].Text;
                         Buttons[5].Text = Buttons[4].Text;
                         Buttons[4].Text = temp;
                     }
                     if (Buttons[7].Text == "0")
                     {
                         String temp;
                         temp = Buttons[7].Text;
                         Buttons[7].Text = Buttons[4].Text;
                         Buttons[4].Text = temp;
                     }
                   
                     break;
                 case 5:
                     if (Buttons[2].Text == "0")
                     {
                         String temp;
                         temp = Buttons[2].Text;
                         Buttons[2].Text = Buttons[5].Text;
                         Buttons[5].Text = temp;
                     }
                     if (Buttons[4].Text == "0")
                     {
                         String temp;
                         temp = Buttons[4].Text;
                         Buttons[4].Text = Buttons[5].Text;
                         Buttons[5].Text = temp;
                     }
                     if (Buttons[8].Text == "0")
                     {
                         String temp;
                         temp = Buttons[8].Text;
                         Buttons[8].Text = Buttons[5].Text;
                         Buttons[5].Text = temp;
                     }
                    
                     break;
                 case 6:
                     if (Buttons[3].Text == "0")
                     {
                         String temp;
                         temp = Buttons[3].Text;
                         Buttons[3].Text = Buttons[6].Text;
                         Buttons[6].Text = temp;
                     }
                     if (Buttons[7].Text == "0")
                     {
                         String temp;
                         temp = Buttons[7].Text;
                         Buttons[7].Text = Buttons[6].Text;
                         Buttons[6].Text = temp;
                     }
                  
                     break;
                 case 7:
                     if (Buttons[4].Text == "0")
                     {
                         String temp;
                         temp = Buttons[4].Text;
                         Buttons[4].Text = Buttons[7].Text;
                         Buttons[7].Text = temp;
                     }
                     if (Buttons[6].Text == "0")
                     {
                         String temp;
                         temp = Buttons[6].Text;
                         Buttons[6].Text = Buttons[7].Text;
                         Buttons[7].Text = temp;
                     }
                     if (Buttons[8].Text == "0")
                     {
                         String temp;
                         temp = Buttons[8].Text;
                         Buttons[8].Text = Buttons[7].Text;
                         Buttons[7].Text = temp;
                     }
                   
                     break;
                 case 8:
                     if (Buttons[5].Text == "0")
                     {
                         String temp;
                         temp = Buttons[5].Text;
                         Buttons[5].Text = Buttons[8].Text;
                         Buttons[8].Text = temp;
                     }
                     if (Buttons[7].Text == "0")
                     {
                         String temp;
                         temp = Buttons[7].Text;
                         Buttons[7].Text = Buttons[8].Text;
                         Buttons[8].Text = temp;
                     }
                   
                     break;
                      
             }
  
           
         
        }
   
     
        private void button1_Click_1(object sender, EventArgs e)
        {
            //讀入  input
            a[1, 1] = Convert.ToInt16(TextBoxs[0].Text);
            a[1, 2] = Convert.ToInt16(TextBoxs[1].Text);
            a[1, 3] = Convert.ToInt16(TextBoxs[2].Text);
            a[2, 1] = Convert.ToInt16(TextBoxs[3].Text);
            a[2, 2] = Convert.ToInt16(TextBoxs[4].Text);
            a[2, 3] = Convert.ToInt16(TextBoxs[5].Text);
            a[3, 1] = Convert.ToInt16(TextBoxs[6].Text);
            a[3, 2] = Convert.ToInt16(TextBoxs[7].Text);
            a[3, 3] = Convert.ToInt16(TextBoxs[8].Text);
            //輸出  output
            for (int i = 0; i < 9; i++)
            {
                if (i < 3)
                {
                    Buttons[i].Text = Convert.ToString(a[1, i + 1]);
                }
                else if (i >= 3 && i < 6)
                {
                    Buttons[i].Text = Convert.ToString(a[2, (i - 3) + 1]);
                }
                else
                {
                    Buttons[i].Text = Convert.ToString(a[3, (i - 3 * 2) + 1]);
                }
            }
        }
    }
}

==========================================================================
switch 參考網址http://www.java2s.com/Tutorial/CSharp/0080__Statement/TheswitchStatement.htm

字串 Button 10/22

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
    {
        System.Windows.Forms.Button[] Buttons;
        System.Windows.Forms.TextBox[] TextBoxs;
        int[,] a = new int[4, 4];
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            Buttons = new System.Windows.Forms.Button[9];
            TextBoxs = new System.Windows.Forms.TextBox[9];

            for (int i = 0; i < 9; ++i)
            {
                Buttons[i] = new Button();
                Buttons[i].Click += new System.EventHandler(Buttons_Click);
                this.Controls.Add(Buttons[i]);
                if (i <= 2)
                    Buttons[i].Location = new System.Drawing.Point(10 + i * 80, 10 + 100);
                else if (i > 2 && i <= 5)
                    Buttons[i].Location = new System.Drawing.Point(10 + (i - 3) * 80, 40 + 100);
                else if (i > 5 && i <= 9)
                    Buttons[i].Location = new System.Drawing.Point(10 + (i - 6) * 80, 70 + 100);
            }
            for (int i = 0; i < 9; ++i)
            {
                TextBoxs[i] = new TextBox();
                this.Controls.Add(TextBoxs[i]);
                if (i <= 2)
                    TextBoxs[i].Location = new System.Drawing.Point(10 + i * 100, 10);
                else if (i > 2 && i <= 5)
                    TextBoxs[i].Location = new System.Drawing.Point(10 + (i - 3) * 100, 40);
                else if (i > 5 && i <= 9)
                    TextBoxs[i].Location = new System.Drawing.Point(10 + (i - 6) * 100, 70);
            }
            TextBoxs[0].Text = "7";
            TextBoxs[1].Text = "2";
            TextBoxs[2].Text = "4";
            TextBoxs[3].Text = "5";
            TextBoxs[4].Text = "0";
            TextBoxs[5].Text = "6";
            TextBoxs[6].Text = "8";
            TextBoxs[7].Text = "3";
            TextBoxs[8].Text = "1";
        }
        public void Buttons_Click(object sender, EventArgs e)
        {
            // System.Windows.Forms.MessageBox.Show("You have clicked button " +
            //   ((System.Windows.Forms.Button)sender).Tag.ToString());
            String tnum= sender.ToString();
            int tlen = tnum.Length;
            String no = tnum.Substring(tlen - 1);
          //  if (no=="2")
            MessageBox.Show("" + no);
        }
   
     
        private void button1_Click_1(object sender, EventArgs e)
        {
            //讀入  input
            a[1, 1] = Convert.ToInt16(TextBoxs[0].Text);
            a[1, 2] = Convert.ToInt16(TextBoxs[1].Text);
            a[1, 3] = Convert.ToInt16(TextBoxs[2].Text);
            a[2, 1] = Convert.ToInt16(TextBoxs[3].Text);
            a[2, 2] = Convert.ToInt16(TextBoxs[4].Text);
            a[2, 3] = Convert.ToInt16(TextBoxs[5].Text);
            a[3, 1] = Convert.ToInt16(TextBoxs[6].Text);
            a[3, 2] = Convert.ToInt16(TextBoxs[7].Text);
            a[3, 3] = Convert.ToInt16(TextBoxs[8].Text);
            //輸出  output
            for (int i = 0; i < 9; i++)
            {
                if (i < 3)
                {
                    Buttons[i].Text = Convert.ToString(a[1, i + 1]);
                }
                else if (i >= 3 && i < 6)
                {
                    Buttons[i].Text = Convert.ToString(a[2, (i - 3) + 1]);
                }
                else
                {
                    Buttons[i].Text = Convert.ToString(a[3, (i - 3 * 2) + 1]);
                }
            }
        }
    }
}

2010/10/8 3*3矩陣相乘

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 label1_Click(object sender, EventArgs e)
        {
        }
        private void button1_Click(object sender, EventArgs e)
        {
            int a, b, c;
            string output;
            a = int.Parse(textBox1.Text);
            b = int.Parse(textBox2.Text);
            c = a * b;
            output =Convert.ToString(c);
            textBox3.Text = output;
        }
        Form2 newform;
        private void button2_Click(object sender, EventArgs e)
        {
            newform = new Form2();
            newform.Show();
        }
    }
}
---------------------------------------------------------------------------------------------------------

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_Click(object sender, EventArgs e)
        {
          
            int[,] a = new int[4,4];
            int[,] b = new int[4,4];
            int[,] c = new int[4,4];
            String g1, g2, g3, g4, g5, g6, g7, g8, g9;
            a[1,1] = int.Parse(textBox1.Text);
            a[1,2] = int.Parse(textBox2.Text);
            a[1,3] = int.Parse(textBox3.Text);
            a[2,1] = int.Parse(textBox4.Text);
            a[2,2] = int.Parse(textBox5.Text);
            a[2,3] = int.Parse(textBox6.Text);
            a[3,1] = int.Parse(textBox7.Text);
            a[3,2] = int.Parse(textBox8.Text);
            a[3,3] = int.Parse(textBox9.Text);
            b[1,1] = int.Parse(textBox10.Text);
            b[1,2] = int.Parse(textBox11.Text);
            b[1,3] = int.Parse(textBox12.Text);
            b[2,1] = int.Parse(textBox13.Text);
            b[2,2] = int.Parse(textBox14.Text);
            b[2,3] = int.Parse(textBox15.Text);
            b[3,1] = int.Parse(textBox16.Text);
            b[3,2] = int.Parse(textBox17.Text);
            b[3,3] = int.Parse(textBox18.Text);
            c[1,1] = a[1,1] * b[1,1] + a[1,2] * b[2,1] + a[1,3] * b[3,1];
            c[1,2] = a[1,1] * b[1,2] + a[1,2] * b[2,2] + a[1,3] * b[3,2];
            c[1,3] = a[1,1] * b[1,3] + a[1,2] * b[2,3] + a[1,3] * b[3,3];
            c[2,1] = a[2,1] * b[1,1] + a[2,2] * b[2,1] + a[2,3] * b[3,1];
            c[2,2] = a[2,1] * b[1,2] + a[2,2] * b[2,2] + a[2,3] * b[3,2];
            c[2,3] = a[2,1] * b[1,3] + a[2,2] * b[2,3] + a[2,3] * b[3,3];
            c[3,1] = a[3,1] * b[1,1] + a[3,2] * b[2,1] + a[3,3] * b[3,1];
            c[3,2] = a[3,1] * b[1,2] + a[3,2] * b[2,2] + a[3,3] * b[3,2];
            c[3,3] = a[3,1] * b[1,3] + a[3,2] * b[2,3] + a[3,3] * b[3,3];

            g1 = Convert.ToString(c[1,1]);
            g2 = Convert.ToString(c[1,2]);
            g3 = Convert.ToString(c[1,3]);
            g4 = Convert.ToString(c[2,1]);
            g5 = Convert.ToString(c[2,2]);
            g6 = Convert.ToString(c[2,3]);
            g7 = Convert.ToString(c[3,1]);
            g8 = Convert.ToString(c[3,2]);
            g9 = Convert.ToString(c[3,3]);
            textBox19.Text = g1;
            textBox20.Text = g2;
            textBox21.Text = g3;
            textBox22.Text = g4;
            textBox23.Text = g5;
            textBox24.Text = g6;
            textBox25.Text = g7;
            textBox26.Text = g8;
            textBox27.Text = g9;

        }
    }
}

2010/10/01

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
    {
        Form2 newform;
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
        }
        private void button3_Click(object sender, EventArgs e)
        {
            newform = new Form2();
            newform.Show();
        }
    }
}
------------------------------------------------------------------------------------
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 Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            int i, j;
            int sum = 0;
            int[,] arr1 = new int[10, 10];
            for (i = 1; i <= 9; i++)
            {
                for (j = 1; j <= 9; j++)
                {
                    sum = i * j;
                    arr1[i, j] = sum;
                   
                }
            }

            for (i = 1; i <= 9; i++)
            {
                for (j = 1; j <= 9; j++)
                {

                    listBox1.Items.Add("i=" + i + ",j=" + j + ",i*j=" + arr1[i, j]);
                }
            }
          
           
          


        }
    }
}