vb.net運(yùn)行進(jìn)程數(shù) vb運(yùn)行程序

vb.net操作文件進(jìn)程總被占…經(jīng)常遇到這樣的問(wèn)題,檢查進(jìn)程里都沒(méi)有,但就是提示進(jìn)程被占。到底是

文件打開(kāi)后使用完要及時(shí)關(guān)閉。

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未關(guān)閉,這樣再打開(kāi)就顯示處于被占用狀態(tài)。

vb.net中如何設(shè)置進(jìn)程的基本優(yōu)先級(jí)

下面的代碼示例說(shuō)明了更改線程優(yōu)先級(jí)的結(jié)果。創(chuàng)建兩個(gè)線程,其中一個(gè)線程的優(yōu)先級(jí)設(shè)置為 BelowNormal。兩個(gè)線程在 while 循環(huán)中都增加一個(gè)變量,并運(yùn)行一段設(shè)定的時(shí)間。

Option Explicit

Option Strict

Imports System

Imports System.Threading

Public Class Test

MTAThread _

Shared Sub Main()

Dim priorityTest As New PriorityTest()

Dim threadOne As Thread = _

New Thread(AddressOf priorityTest.ThreadMethod)

threadOne.Name = "ThreadOne"

Dim threadTwo As Thread = _

New Thread(AddressOf priorityTest.ThreadMethod)

threadTwo.Name = "ThreadTwo"

threadTwo.Priority = ThreadPriority.BelowNormal

threadOne.Start()

threadTwo.Start()

' Allow counting for 10 seconds.

Thread.Sleep(10000)

priorityTest.LoopSwitch = False

End Sub

End Class

Public Class PriorityTest

Dim loopSwitchValue As Boolean

Sub New()

loopSwitchValue = True

End Sub

WriteOnly Property LoopSwitch As Boolean

Set

loopSwitchValue = Value

End Set

End Property

Sub ThreadMethod()

Dim threadCount As Long = 0

While loopSwitchValue

threadCount += 1

End While

Console.WriteLine("{0} with {1,11} priority " _

"has a count = {2,13}", Thread.CurrentThread.Name, _

Thread.CurrentThread.Priority.ToString(), _

threadCount.ToString("N0"))

End Sub

End Class

VB.net 如何設(shè)計(jì)多線程運(yùn)行

Sub Main()

Dim thr As Thread

For Pi As Integer=0 To 4 //啟用5線程

MulParams =Pi vbTab sFile vbTab dFile vbTab 1 vbTab DelN vbTab cr vbTab cg vbTab cb vbTab IndexI

GlobalParamas(pi)=MulParams .Split(vbTab)

thr=New Thread(AddressOf MyMulThreadCaller)

thr.Start() //啟動(dòng)多線程進(jìn)程

Application.DoEvents

Next

End Sub

本文題目:vb.net運(yùn)行進(jìn)程數(shù) vb運(yùn)行程序
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