2010/10/8 3*3矩陣

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[,] a = new int[4, 4];
            int[,] b = new int[4, 4];
            int[,] c = new int[4, 4];
            string output;
            a[1,1]=int.Parse (textBox1.Text);
            a[1,2]=int.Parse (textBox3.Text);
            a[1,3]=int.Parse (textBox6.Text);
            a[2,1]=int.Parse (textBox5.Text);
            a[2,2]=int.Parse (textBox2.Text);
            a[2,3]=int.Parse (textBox12.Text);
            a[3,1]=int.Parse (textBox4.Text);
            a[3,2]=int.Parse (textBox7.Text);
            a[3,3]=int.Parse (textBox11.Text);
            b[1, 1] = int.Parse(textBox10.Text);
            b[1, 2] = int.Parse(textBox16.Text);
            b[1, 3] = int.Parse(textBox13.Text);
            b[2, 1] = int.Parse(textBox9.Text);
            b[2, 2] = int.Parse(textBox15.Text);
            b[2, 3] = int.Parse(textBox19.Text);
            b[3, 1] = int.Parse(textBox8.Text);
            b[3, 2] = int.Parse(textBox14.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];
             output= Convert.ToString(c[1,1]);
             textBox28.Text = output;
             output = Convert.ToString(c[1, 2]);
             textBox26.Text = output;
             output = Convert.ToString(c[1, 3]);
             textBox23.Text = output;
             output = Convert.ToString(c[2, 1]);
             textBox24.Text = output;
             output = Convert.ToString(c[2, 2]);
             textBox27.Text = output;
             output = Convert.ToString(c[2, 3]);
             textBox20.Text = output;
             output = Convert.ToString(c[3, 1]);
             textBox25.Text = output;
             output = Convert.ToString(c[3, 2]);
             textBox22.Text = output;
             output = Convert.ToString(c[3, 3]);
             textBox21.Text = output;
          

        }
        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
        }
        private void textBox13_TextChanged(object sender, EventArgs e)
        {
        }
    }
}