Trả lời mọi thắc mắc của bạn


Liệt kê những bài viết mới nhất

Bài viết mớiNgười viếtVào lúc
paltalk code HdAd
Sun Mar 06, 2016 1:28 am
vb ListView HdAd
Sun Mar 06, 2016 1:00 am
Find occurent of character in string nth HdAd
Sat Jan 16, 2016 10:48 pm
Send listbox items to textbox HdAd
Wed Jan 13, 2016 9:55 pm
[VB] Find word in listbox items HdAd
Wed Jan 13, 2016 7:55 pm
code cho hint2 HdAd
Wed Jan 13, 2016 3:22 pm
[vb] Font RTB HdAd
Tue Dec 29, 2015 10:29 am
[vb] selected text RTB HdAd
Tue Dec 29, 2015 9:06 am
[vb] send unicode text HdAd
Tue Dec 29, 2015 9:03 am
[vb] format multi richtextbox HdAd
Tue Dec 29, 2015 9:01 am
Trang web tai cac bang sang che HdAd
Mon Dec 28, 2015 1:28 pm
[VB] Sử dụng resource của chính chương trình HdAd
Sat Dec 26, 2015 8:56 pm
[vb] Phân biệt class và Module HdAd
Thu Dec 24, 2015 2:39 pm
[VB] MY API and Functions declaration HdAd
Mon Dec 21, 2015 1:45 pm
[vb] Khai báo và sử dụng hàm Setforeground HdAd
Mon Dec 21, 2015 1:29 pm
[VB] Sử dụng hàm Sendmessage để gửi tiếng việt, và format richtextbox HdAd
Mon Dec 21, 2015 1:26 pm
[VB] Find menu context handle/ID by SPY++ HdAd
Fri Dec 18, 2015 1:20 pm
[VB] Find menu context handle/ID - Vu Hai Ninh HdAd
Fri Dec 18, 2015 1:00 pm
[VB] Find menu context handle/ID HdAd
Fri Dec 18, 2015 12:54 pm
[VB] Sleep in VB program HdAd
Thu Dec 17, 2015 7:48 pm
[VB] CLose window if found HdAd
Wed Dec 16, 2015 7:07 pm
[VB] Không cho thay đổi kích cỡ form khi chạy HdAd
Wed Dec 16, 2015 3:28 pm
[VB] Không cho thay đổi text box khi chạy HdAd
Wed Dec 16, 2015 3:22 pm
[VB] Tìm cửa sổ và Button bằng FindWindow & FindWindowsEx HdAd
Wed Dec 16, 2015 3:16 pm
[VB] Xóa text mặc định của text box khi click HdAd
Wed Dec 16, 2015 3:12 pm


You are not connected. Please login or register

[VB] Sleep in VB program

View previous topic View next topic Go down  Message [Page 1 of 1]

1 [VB] Sleep in VB program on Thu Dec 17, 2015 7:48 pm

HdAd

avatar
Admin
Sleep causes a program to suspend operation. This Subroutine receives one parameter, which indicates the number of milliseconds to pause the program. No CPU time is used by Sleep. The program simply ceases to operate.
Example. This example program invokes the Sleep method on the Thread type. Please note how the Imports System.Threading line is included at the top of the program text. This enables the program to compile correctly.
Calls:Sleep(0) pauses the program for zero milliseconds. Sleep(5000) pauses for five seconds. Sleep(1000) pauses for one second.

Also, the SpinWait method is used. This subroutine results in a lot of CPU usage based on the large integer passed to it. SpinWait is the opposite of a Sleep call. It pegs the CPU at 100%.
VB.NET program that demonstrates the Sleep method

Imports System.Threading

Module Module1

Sub Main()
' Create a Stopwatch and sleep for zero milliseconds.
Dim stopwatch As Stopwatch = stopwatch.StartNew
Thread.Sleep(0)
stopwatch.Stop()

' Write the current time.
Console.WriteLine(stopwatch.ElapsedMilliseconds)
Console.WriteLine(DateTime.Now.ToLongTimeString)

' Start a new Stopwatch.
stopwatch = stopwatch.StartNew
Thread.Sleep(5000)
stopwatch.Stop()
Console.WriteLine(stopwatch.ElapsedMilliseconds)
Console.WriteLine(DateTime.Now.ToLongTimeString)

' Start a new Stopwatch.
stopwatch = stopwatch.StartNew
Thread.Sleep(1000)
stopwatch.Stop()
Console.WriteLine(stopwatch.ElapsedMilliseconds)

' Start a new Stopwatch and use SpinWait.
stopwatch = stopwatch.StartNew
Thread.SpinWait(1000000000)
stopwatch.Stop()
Console.WriteLine(stopwatch.ElapsedMilliseconds)
End Sub

End Module

Output

0
9:36:02 AM
4999
9:36:07 AM
999
3128


Summary. To use the Thread.Sleep or Thread.SpinWait methods, please include the Imports System.Threading namespace. The Thread.Sleep method receives an integer indicating the number of milliseconds you want the program execution to pause.
Note:The Thread.SpinWait method receives an integer indicating the amount of work to do. This results in 100% CPU usage.
Integer

View user profile http://hoidap.probb.org

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum