c#

来源：互联网发布：php 关闭call stack 编辑：程序博客网时间：2024/06/06 14:04

Console:

using System;using System.Threading;using System.Threading.Tasks;namespace ConsoleApplication37{    class Program    {        public static Random R = new Random();        public static string T { get; set; }        static void Main(string[] args)        {            AsyncCall2();            while (true)            {                string input = Console.ReadLine();                if (input == "exit")                    break;                Console.WriteLine(input.Length + " characters.");            }            Console.WriteLine("Press <Anykey> to exit application.");            Console.ReadLine();        }        /// <summary>        /// 无返回值的异步操作        /// </summary>        public static async void AsyncCall()        {            var t = Task.Factory.StartNew(() =>            {                while (true)                {                    // 随机睡0.1~0.3秒                    int time = R.Next(1, 3) * 100;                    Thread.Sleep(time);                    Console.WriteLine("AsyncCall()=>" + Guid.NewGuid().ToString() + " cost " + time + " ms.");                }            });            await t;        }        /// <summary>        /// 调用有返回值异步操作        /// </summary>        public static async void AsyncCall2()        {            while (true)            {                T = await AsyncCallWithReturn();                Console.WriteLine(T);            }        }        /// <summary>        /// 有返回值异步操作        /// </summary>        /// <returns></returns>        public static async Task<string> AsyncCallWithReturn()        {            // 等待结束            return await Task.Factory.StartNew<string>(() =>            {                // 随机睡1~5秒                int time = R.Next(1, 5) * 1000;                Thread.Sleep(time);                return "AsyncCallWithReturn()=>" + Guid.NewGuid().ToString() + " cost " + time + " ms.";            });        }    }}

Winform:

using System;using System.Threading;using System.Threading.Tasks;using System.Windows.Forms;namespace WindowsFormsApplication1{    public partial class Form1 : Form    {        private System.ComponentModel.IContainer components = null;        private System.Windows.Forms.Button button1;        private System.Windows.Forms.TextBox textBox1;        private System.Windows.Forms.Label label1;        public Form1()        {            InitializeComponent();        }        private async void button1_Click(object sender, EventArgs e)        {            this.label1.Text = this.textBox1.Text.Length + " characters.";            var text = await AsyncCall();            this.label1.Text = text;        }        private async Task<string> AsyncCall()        {            return await Task.Factory.StartNew(() =>            {                Thread.Sleep(5000);                return Guid.NewGuid().ToString();            });        }        #region AutoGenerated Code        protected override void Dispose(bool disposing)        {            if (disposing && (components != null))            {                components.Dispose();            }            base.Dispose(disposing);        }        private void InitializeComponent()        {            this.button1 = new System.Windows.Forms.Button();            this.textBox1 = new System.Windows.Forms.TextBox();            this.label1 = new System.Windows.Forms.Label();            this.SuspendLayout();            //             // button1            //             this.button1.Location = new System.Drawing.Point(46, 38);            this.button1.Name = "button1";            this.button1.Size = new System.Drawing.Size(75, 23);            this.button1.TabIndex = 0;            this.button1.Text = "Set";            this.button1.UseVisualStyleBackColor = true;            this.button1.Click += new System.EventHandler(this.button1_Click);            //             // textBox1            //             this.textBox1.Location = new System.Drawing.Point(46, 12);            this.textBox1.Name = "textBox1";            this.textBox1.Size = new System.Drawing.Size(356, 20);            this.textBox1.TabIndex = 1;            //             // label1            //             this.label1.AutoSize = true;            this.label1.Location = new System.Drawing.Point(46, 68);            this.label1.Name = "label1";            this.label1.Size = new System.Drawing.Size(0, 13);            this.label1.TabIndex = 2;            //             // Form1            //             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;            this.ClientSize = new System.Drawing.Size(529, 103);            this.Controls.Add(this.label1);            this.Controls.Add(this.textBox1);            this.Controls.Add(this.button1);            this.Name = "Form1";            this.Text = "Form1";            this.ResumeLayout(false);            this.PerformLayout();        }        #endregion    }}

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