WinForm多线程+委托防止界面假死
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;
}
}
}
}<br>运行效果图：
标签: WinForm , C#
作者： Leo_wl
出处： http://www.cnblogs.com/Leo_wl/
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。
版权信息查看更多关于WinForm多线程+委托防止界面假死的详细内容...