C#关于跨线程访问控件信息和创建控件

来源：互联网发布：奇商网络编辑：程序博客网时间：2024/06/05 02:55

跨线程创建创建控件和刷新数据需要使用到委托，C#里面BeginInvoke属于是异步调用，Invoke属于是同步调用

示例包含跨线程实现跨线程访问lable数据和创建控件。

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.Threading;namespace WindowsFormsApplication3{    public partial class Form1 : Form    {        public delegate void update_lable(string str);        static update_lable update_lable_object;        public delegate bool add_controls();        static add_controls add_controls_object;        public Form1() {            InitializeComponent();            update_lable_object = new update_lable(update_lable_func);            Thread update_lable_thread = new Thread(update_lable_thread_func);            update_lable_thread.IsBackground = true;            update_lable_thread.Start();            add_controls_object = new add_controls(add_controls_func);            Thread add_control_thread = new Thread(add_control_thread_func);            add_control_thread.IsBackground = true;            add_control_thread.Start();        }        public void update_lable_thread_func() {            int count = 0;            while (count <= 6) {                try {                                       // 属于是同步调用                    this.Invoke(update_lable_object, "test" + count );                    Thread.Sleep(5000);                } catch (Exception e){                     MessageBox.Show(e.Message);                                 }                finally {                    this.Close(); // 退出程序                }                count++;            }        }        public void add_control_thread_func() {                try {                    Thread.Sleep(5000);                    // 属于是异步调用                    this.BeginInvoke(add_controls_object);                } catch (Exception e) {                    MessageBox.Show(e.Message);                }                finally {                    this.Close();// 退出程序                }        }        public void update_lable_func(string str) {            label1.Text = str;        }        public bool add_controls_func() {            try {                Label lable = new Label();                lable.Top = 20;                lable.Left = 30;                lable.Size = new Size(80, 30);                lable.Text = "sdasdad";                Controls.Add(lable);                return true;            }catch(Exception e){                MessageBox.Show(e.Message);                return false;            }        }    }}

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