C# 线程中操作控件报错 四中处理方法

// 委托
private delegate void mySetState(bool bState);//声明委托

// 实现
private void threadSetState(bool bState)
{
    if (this.InvokeRequired)
    {
        mySetState st = new mySetState(threadSetState);
        Invoke(st, new object[] { bState });
    }
    else
    {
        buttonBegin.Enabled = bState;
    }
}

Invoke(new Action(() => {
    buttonBegin.Enabled = true;
}));

buttonBegin.BeginInvoke(new Action(() => { buttonBegin.Enabled = false; }));