用vb.net怎樣實現(xiàn)在遍歷某一文件夾下的所有文件

'把下面的目錄改成你要遍歷的目錄

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Dim MyDir = "C:\Windows"

Dim MyInfo = MyDir + "目錄下的所有文件包括："

For Each MyFile In System.IO.Directory.GetFiles(MyDir)

MyInfo += Environment.NewLine + MyFile

Next

Me.RichTextBox1.Text =MyInfo

VB關進程

'你要關閉什么進程

'就寫

'Call taskkill("進程名.exe")

'注意大小寫啊

Private Declare Function CreateToolhelp32Snapshot Lib "kernel32" (ByVal dwFlags As Long, ByVal th32ProcessID As Long) As Long

Private Declare Function Process32First Lib "kernel32" (ByVal hSnapshot As Long, lppe As PROCESSENTRY32) As Long

Private Declare Function Process32Next Lib "kernel32" (ByVal hSnapshot As Long, lppe As PROCESSENTRY32) As Long

Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long

Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal blnheritHandle As Long, ByVal dwAppProcessId As Long) As Long

Private Declare Function TerminateProcess Lib "kernel32" (ByVal ApphProcess As Long, ByVal uExitCode As Long) As Long

Private Type PROCESSENTRY32

dwSize As Long

cntUsage As Long

th32ProcessID As Long

th32DefaultHeapID As Long

th32ModuleID As Long

cntThreads As Long

th32ParentProcessID As Long

pcPriClassBase As Long

dwFlags As Long

szExeFile As String * 1024

End Type

Const TH32CS_SNAPHEAPLIST = H1

Const TH32CS_SNAPPROCESS = H2

Const TH32CS_SNAPTHREAD = H4

Const TH32CS_SNAPMODULE = H8

Const TH32CS_SNAPALL = (TH32CS_SNAPHEAPLIST Or TH32CS_SNAPPROCESS Or TH32CS_SNAPTHREAD Or TH32CS_SNAPMODULE)

Const TH32CS_INHERIT = H80000000

Dim pid As Long

Dim pname As String

'-------------結束進程通用函數(shù) 注意進程名要區(qū)分大小寫

Private Sub taskkill(ByVal taskname As String)

Dim my As PROCESSENTRY32

Dim l As Long

Dim l1 As Long

Dim flag As Boolean

Dim mName As String

Dim i As Integer

l = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)

If l Then

my.dwSize = 1060

If (Process32First(l, my)) Then '遍歷第一個進程

Do

i = InStr(1, my.szExeFile, Chr$(0))

mName = LCase$(Left$(my.szExeFile, i - 1))

If mName = LCase$(taskname) Then

pid = my.th32ProcessID

pname = mName

Dim mProcID As Long

mProcID = OpenProcess(1, -1, pid)

TerminateProcess mProcID, 0

flag = True

Exit Function

Else

flag = False

End If

Loop Until (Process32Next(l, my) 1) '遍歷所有進程知道返回值為False

End If

l1 = CloseHandle(l)

End If

End Sub

Private Sub Command1_Click()

Call taskkill("NOTEPAD.EXE")

'這個是關閉記事本進程的

End Sub

這是我回答的 復制自己回答的內容不算復制吧?????

vb.net中如何遍歷程序窗體中的控件？并讀寫控件的數(shù)據(jù)。

Public?Sub?GetAllControls(ByVal?InContainer?As?Control,?ByRef?RecieveList?As?ListBox)

For?i?As?Integer?=?0?To?InContainer.Controls.Count?-?1

If?InContainer.Controls.Item(i).Text??""?Then

GetList.Items.Add(InContainer.Controls.Item(i).Text??vbCrLf)

End?If

If?InContainer.Controls.Item(i).Controls.Count??0?Then

GetAllControls(InContainer.Controls.Item(i),?GetList)

End?If

Next

End?Sub

這段代碼可行，但不能遍歷菜單和工具欄，要按需要修改

VB.net的遍歷Foreach有什么功能呀。一直看不懂。 能給我解釋下圖中的語句意思嗎？

for each是用來簡化for的，但你這種寫法有點奇怪，一般沒這樣用的，通常的用法是

dim a() as string={....}

dim str as string '定義臨時變量，它的類型與你數(shù)組中元素類型一致

For Each str In a

MessageBox.Show(str)

Next

你上面代碼中,a就是一個3個元素的數(shù)組，從a[0]到a[2]， 用for each的時候，就會遍歷你的a數(shù)組，上面的代碼相當于

for i=0 to a.Length-1

MessageBox.Show(a(i))

next

當前名稱：vb.net遍歷進程,vbnet遍歷控件
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