做的是winform程序，因为有循环不想界面卡死所以就想调用线程，可是抛出异常“线程间操作无效:从不是创建控件 的线程访问它”，百度了下说要创建线程委托来调用，改了之后可以使用，但是功能开启界面还是卡死，要怎么使用多线程啊？
------解决思路----------------------
我做了一个小例子，虽然例子背景举的有点蹩脚，但是主要的都说的很明白了;其中包括异步委托执行（都有带参数和返回值），还有在不是创建窗体控件的线程上如何操作控件情况，总之，你看一下就会很明了的啦。代码奉上
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;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
#region 窗体设计器代码
/// <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
/// 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.textBox1 = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.textBox2 = new System.Windows.Forms.TextBox();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(58, 119);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 0;
this.button1.Text = "start";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(128, 63);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(100, 20);
this.textBox1.TabIndex = 1;
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(55, 66);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(67, 13);
this.label1.TabIndex = 2;
this.label1.Text = "线程做加法";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(287, 63);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(100, 20);
this.textBox2.TabIndex = 3;
//
// button2
//
this.button2.Location = new System.Drawing.Point(157, 119);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(240, 23);
this.button2.TabIndex = 4;
this.button2.Text = "执行start按钮期间,点击我弹Message";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(437, 249);
this.Controls.Add(this.button2);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.label1);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Button button1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Button button2;
#endregion
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
int startInt =10;//从10开始加起
ProcessMethod = new Btn_ProcessMethod(CallFun);
ProcessMethod.BeginInvoke(startInt,new AsyncCallback(CallBackFun),null);
}
/// <summary>
/// 委托调用的方法（主要是做一件事情;把textBox1中的数字加1加5次，返回事情已经做完的结果状态）
/// </summary>
/// <param name="sign"></param>
/// <returns></returns>
private bool CallFun(int sign)
{
int ReturnInt = 0;//返回加1的次数
while (ReturnInt < 5)//加5次
{
sign++;
if (this.InvokeRequired)//如果不是当前UI线程则返回true
{
this.Invoke(new delegateAddDisplay(AddDisplay), sign);
}
else
{
AddDisplay(sign);
}
ReturnInt++;
System.Threading.Thread.Sleep(2000);//两秒加一次
}
return true;
}
delegate void delegateAddDisplay(int sign);//显示textBox1信息委托
delegate void delegateEndDisplay(string str);//显示textBox2信息委托
private void AddDisplay(int sign)
{
this.textBox1.Text = sign.ToString();
}
private void EndDisplay(string str)
{
this.textBox2.Text = str;
}
/// <summary>
/// 异步回调方法
/// </summary>
/// <param name="IAresult"></param>
/// <returns></returns>
public void CallBackFun(IAsyncResult IAresult)
{
bool ReturnBool = ProcessMethod.EndInvoke(IAresult);//得到CallFun方法的返回值
if (ReturnBool)//CallFun方法返回True，说明CallFun方法已经执行完毕
{
if (this.InvokeRequired)//如果不是当前UI线程则返回true
{
//因为textBox2是UI线程创建的控件，所以要判断当前是不是创建此控件的UI线程
//（不然，就出现你所说的错误：“ 线程间操作无效:从不是创建控件 的线程访问它”）
this.Invoke(new delegateEndDisplay(EndDisplay), "事情已经做完");
}
else
{
EndDisplay("事情已经做完");
}
}
}
delegate bool Btn_ProcessMethod(int sign);//UI以外线程代理
Btn_ProcessMethod ProcessMethod;//UI以外线程代理申明
private void button2_Click(object sender, EventArgs e)
{
MessageBox.Show("你执行你的加法运算，我弹我的框，哈哈");
}
}
}