VB.NET 簡單多線程

多線程一般是不推薦用的，因?yàn)榫€程之間如果有共享資源的話會(huì)引起競爭，需要加鎖處理；而且線程間沒有時(shí)序關(guān)系，所以你在調(diào)試中可能會(huì)出現(xiàn)異步處理結(jié)束順序與開始處理順序不一致的情況（我在調(diào)試中已經(jīng)發(fā)現(xiàn)該問題）。

成都創(chuàng)新互聯(lián)是一家集網(wǎng)站建設(shè),建昌企業(yè)網(wǎng)站建設(shè),建昌品牌網(wǎng)站建設(shè),網(wǎng)站定制,建昌網(wǎng)站建設(shè)報(bào)價(jià),網(wǎng)絡(luò)營銷,網(wǎng)絡(luò)優(yōu)化,建昌網(wǎng)站推廣為一體的創(chuàng)新建站企業(yè)，幫助傳統(tǒng)企業(yè)提升企業(yè)形象加強(qiáng)企業(yè)競爭力。可充分滿足這一群體相比中小企業(yè)更為豐富、高端、多元的互聯(lián)網(wǎng)需求。同時(shí)我們時(shí)刻保持專業(yè)、時(shí)尚、前沿，時(shí)刻以成就客戶成長自我，堅(jiān)持不斷學(xué)習(xí)、思考、沉淀、凈化自己，讓我們?yōu)楦嗟钠髽I(yè)打造出實(shí)用型網(wǎng)站。

針對(duì)你提出的這個(gè)問題，采用了多線程處理，利用的是BackgroundWorker也就是異步處理控件進(jìn)行了處理。

代碼已經(jīng)經(jīng)過調(diào)試通過。歡迎交流，如有問題，留下QQ或其他聯(lián)系方式。

代碼如下，并附程序截圖。

‘---------------------------------------------------

Imports?System.ComponentModel?'導(dǎo)入異步控件命名空間

Public?Class?Form1

Private?howmany?As?Integer?=?10

Private?AnalysisNumber(0?To?howmany?-?1)?As?BackgroundWorker

Private?Sub?Button1_Click(ByVal?sender?As?System.Object,?ByVal?e?As?System.EventArgs)?Handles?Button1.Click

ListBox1.Items.Clear()

creatNewBackgroundWorker()

addHandle()

startWork()

End?Sub

Private?Sub?creatNewBackgroundWorker()

For?i?As?Integer?=?0?To?AnalysisNumber.Length?-?1

AnalysisNumber(i)?=?New?BackgroundWorker

Next

End?Sub

Private?Sub?addHandle()

For?i?As?Integer?=?0?To?AnalysisNumber.Length?-?1

AddHandler?AnalysisNumber(i).DoWork,?AddressOf?AnalysisNumber_DoWork

AddHandler?AnalysisNumber(i).RunWorkerCompleted,?AddressOf?AnalysisNumber_RunWorkerCompleted

Next

End?Sub

Private?Sub?startWork()

For?i?As?Integer?=?0?To?9

Dim?temp(0?To?9)?As?Integer

For?j?As?Integer?=?1?To?10

temp(j?-?1)?=?10?*?i?+?j

Next

AnalysisNumber(i).RunWorkerAsync(temp)

Next

End?Sub

Private?Sub?AnalysisNumber_DoWork(ByVal?sender?As?Object,?ByVal?e?As?System.ComponentModel.DoWorkEventArgs)

Dim?data?As?Integer()

data?=?CType(e.Argument,?Integer())

Dim?temp?As?Integer

For?i?As?Integer?=?0?To?data.Length?-?1

temp?=?data(i)

data(i)?=?temp?*?temp

Next

e.Result?=?data

End?Sub

Private?Sub?AnalysisNumber_RunWorkerCompleted(ByVal?sender?As?Object,?ByVal?e?As?System.ComponentModel.RunWorkerCompletedEventArgs)

Dim?data?As?Integer()

data?=?CType(e.Result,?Integer())

For?i?As?Integer?=?0?To?data.Length?-?1

ListBox1.Items.Add(data(i))

Next

End?Sub

End?Class

vb.net多線程如何返回參數(shù)，舉個(gè)例子，謝謝

Public?Class?Form1

Public?Class?SquareClass?'把多線程調(diào)用的函數(shù)封裝到類中，通過類事件返回

Public?Value?As?Double

Public?Square?As?Double

Public?Event?ThreadComplete(ByVal?Square?As?Double)

Public?Sub?CalcSquare()

Square?=?Value?*?Value

RaiseEvent?ThreadComplete(Square)

End?Sub

End?Class

Dim?WithEvents?oSquare?As?SquareClass

Private?Sub?Button1_Click(sender?As?Object,?e?As?EventArgs)?Handles?Button1.Click?'多線程返回值測試，當(dāng)線程運(yùn)行完成激發(fā)事件

oSquare?=?New?SquareClass()

Dim?t?As?New?Threading.Thread(AddressOf?oSquare.CalcSquare)

oSquare.Value?=?30

t.Start()

End?Sub

Sub?SquareEventHandler(ByVal?Square?As?Double)?Handles?oSquare.ThreadComplete?'響應(yīng)事件函數(shù)

MsgBox("The?square?is?"??Square)

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