在子线程里控制UI状态关键字：#delegate #Invoke

Ying-er — Wed, 21 Sep 2011 02:24:00 GMT

step1：定义委托

private delegate void loadingRun(int step);

step2：将对UI的操作封装成方法

private void doUpdate(int step)
        {
            if (step == 1)
            {
                this.checkBox1.Checked = true;
                this.checkBox1.Font = new System.Drawing.Font("MS UI Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
                this.checkBox2.Font = new System.Drawing.Font("MS UI Gothic", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            }
            else if (step == 2)
            {
                this.checkBox2.Checked = true;
                this.checkBox2.Font = new System.Drawing.Font("MS UI Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
                this.checkBox3.Font = new System.Drawing.Font("MS UI Gothic", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            }
            else if (step == 3)
            {
                this.checkBox3.Checked = true;
                this.checkBox3.Font = new System.Drawing.Font("MS UI Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
                this.checkBox4.Font = new System.Drawing.Font("MS UI Gothic", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            }
            else if (step == 4)
            {
                this.checkBox4.Checked = true;
                this.checkBox4.Font = new System.Drawing.Font("MS UI Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
                this.Close();
            }
        }

step3：实例化委托并调用doUpdate

public void run()
        {
            loadingRun load = new loadingRun(doUpdate);

            //do something

            this.Invoke(load, 1);

            //do something

            this.Invoke(load, 2);

            //do something

            this.Invoke(load, 3);

            //do something

            this.Invoke(load, 4);
        }

step4：让子线程执行run

private void init()
        {
            ThreadStart ts = new ThreadStart(run);
            Thread runThread = new Thread(ts);
            runThread.Start();
        }

========================================分割线=============以下为完整代码============================================

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;
using System.Threading;

namespace WindowsFormsApplication1
{
    public partial class LoadingTest : Form
    {
        private delegate void loadingRun(int step);

        public LoadingTest()
        {
            InitializeComponent();
            init();
        }

        private void init()
        {
            ThreadStart ts = new ThreadStart(run);
            Thread runThread = new Thread(ts);
            runThread.Start();
        }

        public void run()
        {
            loadingRun load = new loadingRun(doUpdate);

            //do something

            this.Invoke(load, 1);

            //do something

            this.Invoke(load, 2);

            //do something

            this.Invoke(load, 3);

            //do something

            this.Invoke(load, 4);
        }

        private void doUpdate(int step)
        {
            if (step == 1)
            {
                this.checkBox1.Checked = true;
                this.checkBox1.Font = new System.Drawing.Font("MS UI Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
                this.checkBox2.Font = new System.Drawing.Font("MS UI Gothic", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            }
            else if (step == 2)
            {
                this.checkBox2.Checked = true;
                this.checkBox2.Font = new System.Drawing.Font("MS UI Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
                this.checkBox3.Font = new System.Drawing.Font("MS UI Gothic", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            }
            else if (step == 3)
            {
                this.checkBox3.Checked = true;
                this.checkBox3.Font = new System.Drawing.Font("MS UI Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
                this.checkBox4.Font = new System.Drawing.Font("MS UI Gothic", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            }
            else if (step == 4)
            {
                this.checkBox4.Checked = true;
                this.checkBox4.Font = new System.Drawing.Font("MS UI Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
                this.Close();
            }
        }
    }
}

Ying-er 2011-09-21 10:24 发表评论

在子线程里ShowDialog()

Ying-er — Fri, 02 Sep 2011 09:22:00 GMT

eg:

子线程showDialog了一个窗体：frm1。

在frm1中需要使用OpenFileDialog的ShowDialog方法

我们应该这样定义子线程：

Thread app = new Thread(new ThreadStart(method));
app.SetApartmentState(ApartmentState.STA);
app.Start();

public void method()
        {
            frmSendMail frm = new frmSendMail();
            frm.ShowDialog();
        }

这样，frm里OpenFileDialog的ShowDialog方法，就能正常使用了。

Ying-er 2011-09-02 17:22 发表评论

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在子线程里控制UI状态 关键字：#delegate #Invoke

在子线程里ShowDialog()

在子线程里控制UI状态关键字：#delegate #Invoke