我搜索了很多主题，但我似乎无法理解如何用委托+计时器替换现有的方法，因为我目前仅使用计时器。此外，当添加
BackgroundWorkerBackgroundWorker附注我是否需要共享/更改数据库连接代码才能使其与后台工作人员一起工作？如果需要的话我会添加它。还有几行..
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Speech;
using System.Speech.Synthesis;
using System.Data.OleDb;
namespace rewrite
{
public partial class Form1 : Form
{
//variables
int y_up = 63;
int y_down = 376;
int x_door_left_close = 74;
int x_door_left_open = 12;
int x_door_right_close = 139;
int x_door_right_open = 200;
bool go_up = false;
bool go_down = false;
bool arrived_G = false;
bool arrived_1 = false;
//object
SpeechSynthesizer reader = new SpeechSynthesizer();
public Form1()
{
InitializeComponent();
}
private void timerliftdown_Tick(object sender, EventArgs e)
{
if (picturelift.Top <= y_down)
{
picturelift.Top += 1;
}
else
{
timerliftdown.Enabled = false;
btnup.Enabled = true;
btn1.Enabled = true;
btnclose.Enabled = true;
btnopen.Enabled = true;
btndown.BackColor = Color.Red;
btng.BackColor = Color.Red;
dooropendown();
arrived_G = true;
picturelift.Image = global::rewrite.Properties.Resources.Inside_of_the_lift;
displaypanel.Image = global::rewrite.Properties.Resources.G;
displaytop.Image = global::rewrite.Properties.Resources.G;
displaybottom.Image = global::rewrite.Properties.Resources.G;
}
}
private void timerliftup_Tick(object sender, EventArgs e)
{
if (picturelift.Top >= y_up)
{
picturelift.Top -= 1;
}
else
{
timerliftup.Enabled = false;
btndown.Enabled = true;
btng.Enabled = true;
btnclose.Enabled = true;
btnopen.Enabled = true;
btnup.BackColor = Color.Red;
btn1.BackColor = Color.Red;
dooropenup();
arrived_1 = true;
picturelift.Image = global::rewrite.Properties.Resources.Inside_of_the_lift;
displaypanel.Image = global::rewrite.Properties.Resources._1;
displaytop.Image = global::rewrite.Properties.Resources._1;
displaybottom.Image = global::rewrite.Properties.Resources._1;
}
}
private void dooropendown_Tick(object sender, EventArgs e)
{
if (doorleftdown.Left >= x_door_left_open && doorrightdown.Left <= x_door_right_open)
{
doorleftdown.Left -= 1;
doorrightdown.Left += 1;
}
else
{
timerdooropendown.Enabled = false;
}
}
private void timerdoorclosedown_Tick(object sender, EventArgs e)
{
if (doorleftdown.Left <= x_door_left_close && doorrightdown.Left >= x_door_right_close)
{
doorleftdown.Left += 1;
doorrightdown.Left -= 1;
}
else
{
timerdoorclosedown.Enabled = false;
if (go_up == true)
{
picturelift.Image = global::rewrite.Properties.Resources.lift_transparent;
displaypanel.Image = global::rewrite.Properties.Resources.up;
displaytop.Image = global::rewrite.Properties.Resources.up;
displaybottom.Image = global::rewrite.Properties.Resources.up;
reader.Speak("Going up");
timerliftup.Enabled = true;
go_up = false;
}
}
}
private void dooropenup_Tick(object sender, EventArgs e)
{
if (doorleftup.Left >= x_door_left_open && doorrightup.Left <= x_door_right_open)
{
doorleftup.Left -= 1;
doorrightup.Left += 1;
}
else
{
timerdooropenup.Enabled = false;
}
}
private void timerdoorcloseup_Tick(object sender, EventArgs e)
{
if (doorleftup.Left <= x_door_left_close && doorrightup.Left >= x_door_right_close)
{
doorleftup.Left += 1;
doorrightup.Left -= 1;
}
else
{
timerdoorcloseup.Enabled = false;
if (go_down == true)
{
picturelift.Image = global::rewrite.Properties.Resources.lift_transparent;
displaypanel.Image = global::rewrite.Properties.Resources.down;
displaytop.Image = global::rewrite.Properties.Resources.down;
displaybottom.Image = global::rewrite.Properties.Resources.down;
reader.Speak("Going down");
timerliftdown.Enabled = true;
go_down = false;
}
}
}
private void doorclosedown()
{
reader.Speak("doors closing");
insertdata("door closing @Ground floor");
timerdoorclosedown.Enabled = true;
timerdooropenup.Enabled = false;
}
private void dooropendown()
{
reader.Speak("Ground floor, doors opening");
insertdata("doors opening @Ground floor");
timerdoorclosedown.Enabled = false;
timerdooropendown.Enabled = true;
}
private void doorcloseup()
{
reader.Speak("doors closing");
insertdata("Doors closing @First Floor");
timerdoorcloseup.Enabled = true;
timerdooropenup.Enabled = false;
}
private void dooropenup()
{
reader.Speak("First Floor, doors opening");
insertdata("Doors Opening @First Floor");
timerdoorcloseup.Enabled = false;
timerdooropenup.Enabled = true;
}
private void going_up()
{
go_up = true;
doorclosedown();
btng.Enabled = false;
btndown.Enabled = false;
btnclose.Enabled = false;
btnopen.Enabled = false;
arrived_G = false;
insertdata("Lift going up");
}
private void going_down()
{
go_down = true;
doorcloseup();
btn1.Enabled = false;
btnup.Enabled = false;
btnclose.Enabled = false;
btnopen.Enabled = false;
arrived_1 = false;
insertdata("Lift going down");
}
private void btndown_Click(object sender, EventArgs e)
{
btnup.BackColor = Color.DarkCyan;
going_up();
}
private void btnup_Click(object sender, EventArgs e)
{
btndown.BackColor = Color.DarkCyan;
going_down();
}
private void btn1_Click(object sender, EventArgs e)
{
btn1.BackColor = Color.DarkCyan;
going_up();
}
private void btng_Click(object sender, EventArgs e)
{
btng.BackColor = Color.DarkOrange;
going_down();
}
private void btnclose_Click(object sender, EventArgs e)
{
if (arrived_G == true)
{
doorclosedown();
}
else if (arrived_1 == true)
{
doorcloseup();
}
}
private void btnopen_Click(object sender, EventArgs e)
{
if (arrived_G == true)
{
dooropendown();
}
else if (arrived_1 == true)
{
dooropenup();
}
}
private void btnalarm_Click(object sender, EventArgs e)
{
btnalarm.BackColor = Color.Green;
reader.Speak("Emergency Stop. Please exit carefully.");
insertdata("Emergency Stop!");
timerliftdown.Enabled = false;
timerliftup.Enabled = false;
timerdooropendown.Enabled = true;
timerdooropenup.Enabled = true;
displaypanel.Image = global::rewrite.Properties.Resources.alarmbellbutton;
displaytop.Image = global::rewrite.Properties.Resources.alarmbellbutton;
displaybottom.Image = global::rewrite.Properties.Resources.alarmbellbutton;
}
对于那些可能会回来的人，我已经使用这个
this.bw = new BackgroundWorker(); this.bw.DoWork += new DoWorkEventHandler(bw_DoWork); this.bw.ProgressChanged += new ProgressChangedEventHandler(bw_ProgressChanged); this.bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_RunWorkerCompleted); this.bw.WorkerReportsProgress = true; this.button1.Click += new EventHandler(button1_Click);