private void btnSearch_Click(object sender, EventArgs e) { this.progressBar1.Maximum = 9000; progressBar1.Minimum = 0; progressBar1.MarqueeAnimationSpeed = 1000; Thread tt = new Thread(new ThreadStart(LongProcess)); tt.Start(); tt.Join(); } private void LongProcess() { for (int i = 0; i < 9000; i++) {if (InvokeRequired) { BeginInvoke(new UpProgressDelegate(LongProcess)); return; } this.progressBar1.Value = i; }}進(jìn)度條在運(yùn)行時(shí)，其它窗體控件不能使用．．．只能等到進(jìn)度條運(yùn)行完后，才能使用，我這里開線程了，還有就是我回到UI所在線程修改控件是不是造成卡死的原因啊，請(qǐng)高手指點(diǎn)啊，并給出好的意見，最好給個(gè)小例子！可以追加分?jǐn)?shù)！
3 回答
慕沐林林
TA貢獻(xiàn)2016條經(jīng)驗(yàn) 獲得超9個(gè)贊
去掉tt.Join();
因?yàn)閠t.Join()阻塞了主線程,所以界面會(huì)卡.
可以這樣寫代碼:
private void Form1_Load(object sender, EventArgs e)
{
ProgressBar.CheckForIllegalCrossThreadCalls = false;
}
private void btnSearch_Click(object sender, EventArgs e)
{
this.progressBar1.Maximum = 9000;
progressBar1.Minimum = 0;
progressBar1.MarqueeAnimationSpeed = 1000;
Thread tt = new Thread(new ThreadStart(LongProcess));
tt.Start();
// tt.Join();
}
private void LongProcess()
{
for (int i = 0; i < 9000; i++)
{
this.progressBar1.Value = i;
}
}
白板的微信
TA貢獻(xiàn)1883條經(jīng)驗(yàn) 獲得超3個(gè)贊
下面是典型的多線程操作界面的例子，我按照你的要求改了，已經(jīng)測(cè)試過，
界面不會(huì)卡住
private void buttonSearch_Click(object sender, EventArgs e)
{
this.progressBar1.Maximum = 9000;
progressBar1.Minimum = 0;
progressBar1.MarqueeAnimationSpeed = 1000;
Thread tt = new Thread(new ThreadStart(LongProcess));
tt.IsBackground = true;
tt.Start();
}
delegate void UpProgressDelegate(int value);
void ProgressIncrease(int value)
{
this.progressBar1.Value = value;
}
void LongProcess()
{
for (int i = 0; i < 9000; i++)
{
//Do something
Thread.Sleep(10); //在這里做一些需要在線程中做的長(zhǎng)時(shí)間操作，這里用休眠10ms來模擬。
//Porogress Increase
if (progressBar1.InvokeRequired)
{
progressBar1.Invoke(new UpProgressDelegate(ProgressIncrease),
new object[] { i });
}
else
{
ProgressIncrease(i);
}
}
}
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