多线程实例

  1using System;
  2using System.Drawing;
  3using System.Collections;
  4using System.ComponentModel;
  5using System.Windows.Forms;
  6using System.Data;
  7
  8namespace MultiThread
  9{
 10    /**//// <summary>
 11    /// 多线程实例。
 12    /// </summary>
 13    public class Form1 : System.Windows.Forms.Form
 14    {
 15        private System.Windows.Forms.Button btnStart;
 16        private System.Windows.Forms.Button btnStop;
 17        private System.Windows.Forms.Label labThreadThree;
 18        private System.Windows.Forms.Label labThreadOne;
 19        private System.Windows.Forms.Label labThreadTwo;
 20        private System.Windows.Forms.Label labThreadFour;
 21        /**//// <summary>
 22        /// 必需的设计器变量。
 23        /// </summary>
 24        private System.ComponentModel.Container components = null;
 25
 26        public Form1()
 27        {
 28            //
 29            // Windows 窗体设计器支持所必需的
 30            //
 31            InitializeComponent();
 32
 33            //
 34            // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
 35            //
 36        }
 37
 38        /**//// <summary>
 39        /// 清理所有正在使用的资源。
 40        /// </summary>
 41        protected override void Dispose( bool disposing )
 42        {
 43            if( disposing )
 44            {
 45                if (components != null)
 46                {
 47                    components.Dispose();
 48                }
 49            }
 50            base.Dispose( disposing );
 51        }
 52
 53        Windows Form Designer generated code#region Windows Form Designer generated code
 54        /**//// <summary>
 55        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
 56        /// 此方法的内容。
 57        /// </summary>
 58        private void InitializeComponent()
 59        {
 60            this.labThreadThree = new System.Windows.Forms.Label();
 61            this.labThreadOne = new System.Windows.Forms.Label();
 62            this.btnStart = new System.Windows.Forms.Button();
 63            this.labThreadTwo = new System.Windows.Forms.Label();
 64            this.labThreadFour = new System.Windows.Forms.Label();
 65            this.btnStop = new System.Windows.Forms.Button();
 66            this.SuspendLayout();
 67            //
 68            // labThreadThree
 69            //
 70            this.labThreadThree.Location = new System.Drawing.Point(34, 88);
 71            this.labThreadThree.Name = "labThreadThree";
 72            this.labThreadThree.TabIndex = 1;
 73            this.labThreadThree.Text = "3";
 74            //
 75            // labThreadOne
 76            //
 77            this.labThreadOne.Location = new System.Drawing.Point(34, 32);
 78            this.labThreadOne.Name = "labThreadOne";
 79            this.labThreadOne.TabIndex = 2;
 80            this.labThreadOne.Text = "1";
 81            //
 82            // btnStart
 83            //
 84            this.btnStart.Location = new System.Drawing.Point(67, 144);
 85            this.btnStart.Name = "btnStart";
 86            this.btnStart.Size = new System.Drawing.Size(75, 24);
 87            this.btnStart.TabIndex = 3;
 88            this.btnStart.Text = "开始计算";
 89            this.btnStart.TextAlign = System.Drawing.ContentAlignment.TopCenter;
 90            this.btnStart.Click += new System.EventHandler(this.btnStart_Click);
 91            //
 92            // labThreadTwo
 93            //
 94            this.labThreadTwo.Location = new System.Drawing.Point(202, 32);
 95            this.labThreadTwo.Name = "labThreadTwo";
 96            this.labThreadTwo.TabIndex = 4;
 97            this.labThreadTwo.Text = "2";
 98            //
 99            // labThreadFour
100            //
101            this.labThreadFour.Location = new System.Drawing.Point(202, 88);
102            this.labThreadFour.Name = "labThreadFour";
103            this.labThreadFour.TabIndex = 5;
104            this.labThreadFour.Text = "4";
105            //
106            // btnStop
107            //
108            this.btnStop.Enabled = false;
109            this.btnStop.Location = new System.Drawing.Point(195, 145);
110            this.btnStop.Name = "btnStop";
111            this.btnStop.TabIndex = 6;
112            this.btnStop.Text = "停止计算";
113            this.btnStop.TextAlign = System.Drawing.ContentAlignment.TopCenter;
114            this.btnStop.Click += new System.EventHandler(this.btnStop_Click);
115            //
116            // Form1
117            //
118            this.AutoScaleBaseSize = new System.Drawing.Size(8, 18);
119            this.ClientSize = new System.Drawing.Size(336, 184);
120            this.Controls.AddRange(new System.Windows.Forms.Control[] {
121                this.btnStop,
122                this.labThreadFour,
123                this.labThreadTwo,
124                this.btnStart,
125                this.labThreadOne,
126                this.labThreadThree});
127            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
128            this.Name = "Form1";
129            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
130            this.Text = "多线程实例";
131            this.ResumeLayout(false);
132
133        }
134        #endregion
135
136        /**//// <summary>
137        /// 应用程序的主入口点。
138        /// </summary>
139        [STAThread]
140        static void Main()
141        {
142            Application.Run(new Form1());
143        }
144
145        // 定义四个线程变量。
146        public System.Threading.Thread m_thdOne;
147        public System.Threading.Thread m_thdTwo;
148        public System.Threading.Thread m_thdThree;
149        public System.Threading.Thread m_thdFour;
150        // 定义四个计算变量。
151        public int m_iOne;
152        public int m_iTwo;
153        public int m_iThree;
154        public int m_iFour;
155        // 定义一个委托来进行辅助线程调用主线程组件的方法。
156        public delegate void ShowData();
157
158        // 定义四个线程函数。
159        public void ThreadOne()
160        {
161            int i;
162            while (true)
163            {
164                m_iOne += 1;
165                for (i=0; i<10000; i++);
166                labThreadOne.Invoke(new ShowData(ShowOne));
167            }
168        }
169        public void ThreadTwo()
170        {
171            int i;
172            while (true)
173            {
174                m_iTwo += 2;
175                for (i=0; i<10000; i++);
176                labThreadTwo.Invoke(new ShowData(ShowTwo));
177            }
178        }
179        public void ThreadThree()
180        {
181            int i;
182            while (true)
183            {
184                for (i=0; i<10000; i++);
185                m_iThree += 3;
186                labThreadThree.Invoke(new ShowData(ShowThree));
187            }
188        }
189        public void ThreadFour()
190        {
191            int i;
192            while (true)
193            {
194                for (i=0; i<10000; i++);
195                m_iFour += 4;
196                labThreadFour.Invoke(new ShowData(ShowFour));
197            }
198        }
199        // 四个显示线程计算结果的函数。
200        public void ShowOne()
201        {
202            labThreadOne.Text = m_iOne.ToString();
203        }
204        public void ShowTwo()
205        {
206            labThreadTwo.Text = m_iTwo.ToString();
207        }
208        public void ShowThree()
209        {
210            labThreadThree.Text = m_iThree.ToString();
211        }
212        public void ShowFour()
213        {
214            labThreadFour.Text = m_iFour.ToString();
215        }
216        // 开始多线程计算。
217        private void btnStart_Click(object sender, System.EventArgs e)
218        {
219            btnStart.Enabled = false;
220            btnStop.Enabled  = true;
221            m_iOne = 0;
222            m_iTwo = 0;
223            m_iThree = 0;
224            m_iFour = 0;
225            m_thdOne = new System.Threading.Thread(new System.Threading.ThreadStart(this.ThreadOne));
226            m_thdTwo = new System.Threading.Thread(new System.Threading.ThreadStart(this.ThreadTwo));
227            m_thdThree = new System.Threading.Thread(new System.Threading.ThreadStart(this.ThreadThree));
228            m_thdFour = new System.Threading.Thread(new System.Threading.ThreadStart(this.ThreadFour));
229            m_thdOne.Start();
230            m_thdTwo.Start();
231            m_thdThree.Start();
232            m_thdFour.Start();
233        }
234        // 停止多线程计算。
235        private void btnStop_Click(object sender, System.EventArgs e)
236        {
237            btnStart.Enabled = true;
238            btnStop.Enabled  = false;
239            m_thdOne.Abort();
240            m_thdTwo.Abort();
241            m_thdThree.Abort();
242            m_thdFour.Abort();
243        }
244    }
245}
246