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   源码介绍

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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace A._3
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private async void start_Click(object sender, RoutedEventArgs e)
        {
            this.test.Items.Clear();
            for (int i = 0; i < 3; i  )
            {
                await Task.Run(() => matrixMul(i   1));
            }
            //Parallel.For(0, 3, (i) => matrixMul(i   1));
        }

        Random rand = new Random();
        /// <summary>
        /// 创建矩阵
        /// </summary>
        /// <param name="row">矩阵的行</param>
        /// <param name="col">举证的列</param>
        /// <param name="matrix">矩阵</param>
        int[,] createMatrix(int row, int col) {

            int[,] matrix=new int[row,col];
            for (int i = 0; i < row; i  ) {
                for (int j = 0; j < col; j  ) {
                    matrix[i,j] = rand.Next(0, 50);
                }
            }
            return matrix;
        }

        /// <summary>
        /// 矩阵相乘
        /// </summary>
        void matrixMul(int No)
        {
            int matrix1_Row = rand.Next(1, 500);
            int matrix1_Col = rand.Next(1, 500);
            int matrix2_Row = matrix1_Col;
            int matrix2_Col = rand.Next(1, 500);

            int[,] mulResult = new int[matrix1_Row, matrix2_Col];

            int[,] matrix1 = createMatrix(matrix1_Row, matrix1_Col);
            int[,] matrix2 = createMatrix(matrix2_Row, matrix2_Col);

            Stopwatch sw = Stopwatch.StartNew();//计时

            Action<int> action_i = i =>
            {
                Action<int> action_j = j =>
                {
                    Action<int> action_k = k =>
                    {
                        mulResult[i, j]  = matrix1[i, k] * matrix2[k, j];
                    };
                    Parallel.For(0, matrix1_Col, action_k);
                };
                Parallel.For(0, matrix2_Col, action_j);
            };
            Parallel.For(0, matrix1_Row, action_i);

            sw.Stop();
            string result = string.Format("测试{0} (矩阵1： {1}×{2}; 矩阵2： {3}×{4},用时: {5}毫秒)", No,matrix1_Row, matrix1_Col, matrix2_Row, matrix2_Col, sw.ElapsedMilliseconds);
            this.Dispatcher.InvokeAsync(() =>{ this.test.Items.Add(result);});
        }
    }
}