方法1：
button1.Enabled = false;
TaskScheduler ui = TaskScheduler.FromCurrentSynchronizationContext();
Task t = Task.Factory.StartNew(() =>
{
for (int i = 0; i < 5; i++)
{
Console.WriteLine("任务1: " + DateTime.Now.ToString("ss.fff"));
Task.Delay(1000).Wait();
}
return 1;
}).ContinueWith(m =>
{
button1.Enabled = true;
Console.WriteLine("任务1：结束");
}, ui);
方法2：
button2.Enabled = false;
TaskScheduler ui = TaskScheduler.FromCurrentSynchronizationContext();
Task t = Task.Factory.StartNew(() =>
{
for (int i = 0; i < 5; i++)
{
Console.WriteLine("任务2: " + DateTime.Now.ToString("ss.fff"));
Task.Delay(1000).Wait();
}
return 1;
}).ContinueWith(m =>
{
this.Invoke(new MethodInvoker(() =>
{
button2.Enabled = true;
Console.WriteLine("任务2：结束");
}));
});
using System;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
button1.Enabled = false;
TaskScheduler ui = TaskScheduler.FromCurrentSynchronizationContext();
Task t = Task.Factory.StartNew(() =>
{
for (int i = 0; i < 5; i++)
{
Console.WriteLine("任务1: " + DateTime.Now.ToString("ss.fff"));
Task.Delay(1000).Wait();
}
return 1;
}).ContinueWith(m =>
{
button1.Enabled = true;
Console.WriteLine("任务1：结束");
}, ui);
}
private void button2_Click(object sender, EventArgs e)
{
button2.Enabled = false;
TaskScheduler ui = TaskScheduler.FromCurrentSynchronizationContext();
Task t = Task.Factory.StartNew(() =>
{
for (int i = 0; i < 5; i++)
{
Console.WriteLine("任务2: " + DateTime.Now.ToString("ss.fff"));
Task.Delay(1000).Wait();
}
return 1;
}).ContinueWith(m =>
{
ButtonEnabled();
});
}
private void ButtonEnabled()
{
this.Invoke(new MethodInvoker(() =>
{
button2.Enabled = true;
Console.WriteLine("任务2：结束");
}));
}
private int i = 0;
private void btnOperate_Click(object sender, EventArgs e)
{
lblMsg.Text = i++.ToString();
}
}
}
View Code
namespace WindowsFormsApp1
{
partial class Form1
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要修改
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.btnOperate = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.lblMsg = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(161, 51);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 0;
this.button1.Text = "开始";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// btnOperate
//
this.btnOperate.Location = new System.Drawing.Point(312, 62);
this.btnOperate.Name = "btnOperate";
this.btnOperate.Size = new System.Drawing.Size(150, 99);
this.btnOperate.TabIndex = 0;
this.btnOperate.Text = "点开始后，再点我不阻塞";
this.btnOperate.UseVisualStyleBackColor = true;
this.btnOperate.Click += new System.EventHandler(this.btnOperate_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(161, 127);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(75, 23);
this.button2.TabIndex = 0;
this.button2.Text = "开始";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(91, 62);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(47, 12);
this.label1.TabIndex = 1;
this.label1.Text = "方法1：";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(91, 132);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(47, 12);
this.label2.TabIndex = 1;
this.label2.Text = "方法2：";
//
// lblMsg
//
this.lblMsg.AutoSize = true;
this.lblMsg.BackColor = System.Drawing.Color.Transparent;
this.lblMsg.Font = new System.Drawing.Font("宋体", 16F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.lblMsg.ForeColor = System.Drawing.Color.Tomato;
this.lblMsg.Location = new System.Drawing.Point(352, 26);
this.lblMsg.Name = "lblMsg";
this.lblMsg.Size = new System.Drawing.Size(65, 22);
this.lblMsg.TabIndex = 1;
this.lblMsg.Text = "-----";
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(510, 254);
this.Controls.Add(this.lblMsg);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Controls.Add(this.button2);
this.Controls.Add(this.btnOperate);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button btnOperate;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label lblMsg;
}
}
View Code