WinForm多线程及委托防止界面假死

资料来源：网络整理时间：2023/2/14 0:04:39 共计：3622 浏览

当有大量数据需要计算、显示在界面或者调用sleep函数时，容易导致界面卡死，可以采用多线程加委托的方法解决。


	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 FormMain : Form

    {

        DataTable table; int currentIndex = 0; int max = 10000; public FormMain()

        {

            InitializeComponent();

        } private void button1_Click(object sender, EventArgs e)

        {

            button1.Enabled = false;

            Thread thread = new Thread(new ThreadStart(LoadData));

            thread.IsBackground = true;

            thread.Start();

 

            progressBar1.Minimum = 0;

            progressBar1.Maximum = max;

        } private void LoadData()

        {

            SetLableText("数据加载中...");

            currentIndex = 0;

            table = new DataTable();

            table.Columns.Add("id");

            table.Columns.Add("name");

            table.Columns.Add("age"); while (currentIndex < max)

            {

                SetLableText(string.Format("当前行:{0},剩余量:{1},完成比例:{2}%", currentIndex, max - currentIndex,

                         (Convert.ToDecimal(currentIndex) / Convert.ToDecimal(max) * 100).ToString("f0")));

                SetPbValue(currentIndex);

                DataRow dr = table.NewRow();

                dr["id"] = currentIndex; string name = "张三";

                dr["name"] = name;

                dr["age"] = currentIndex + 5;

                table.Rows.Add(dr);

                currentIndex++;

            }

            SetDgvDataSource(table);

            SetLableText("数据加载完成！"); this.BeginInvoke(new MethodInvoker(delegate()

            {

                button1.Enabled = true;

            }));

        } delegate void labDelegate(string str); private void SetLableText(string str)

        { if (label1.InvokeRequired)

            {

                Invoke(new labDelegate(SetLableText), new string[] { str });

            } else {

                label1.Text = str;

            }

        } delegate void dgvDelegate(DataTable table); private void SetDgvDataSource(DataTable table)

        { if (dataGridView1.InvokeRequired)

            {

                Invoke(new dgvDelegate(SetDgvDataSource), new object[] { table });

            } else {

                dataGridView1.DataSource = table;

            }

        } delegate void pbDelegate(int value); private void SetPbValue(int value)

        { if (progressBar1.InvokeRequired)

            {

                Invoke(new pbDelegate(SetPbValue), new object[] { value });

            } else {

                progressBar1.Value = value;

            }

        }

    }

}

运行效果图：
}<br>运行效果图：

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