vb.net遍历进程,vbnet遍历控件
用vb.net怎样实现在遍历某一文件夹下的所有文件
'把下面的目录改成你要遍历的目录
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Dim MyDir = "C:\Windows"
Dim MyInfo = MyDir + "目录下的所有文件包括："
For Each MyFile In System.IO.Directory.GetFiles(MyDir)
MyInfo += Environment.NewLine + MyFile
Next
Me.RichTextBox1.Text =MyInfo
VB关进程
'你要关闭什么进程
'就写
'Call taskkill("进程名.exe")
'注意大小写啊
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
'-------------结束进程通用函数 注意进程名要区分大小写
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 '遍历第一个进程
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) '遍历所有进程知道返回值为False
End If
l1 = CloseHandle(l)
End If
End Sub
Private Sub Command1_Click()
Call taskkill("NOTEPAD.EXE")
'这个是关闭记事本进程的
End Sub
这是我回答的 复制自己回答的内容不算复制吧?????
vb.net中如何遍历程序窗体中的控件？并读写控件的数据。
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
这段代码可行，但不能遍历菜单和工具栏，要按需要修改
VB.net的遍历Foreach有什么功能呀。一直看不懂。 能给我解释下图中的语句意思吗？
for each是用来简化for的，但你这种写法有点奇怪，一般没这样用的，通常的用法是
dim a() as string={....}
dim str as string '定义临时变量，它的类型与你数组中元素类型一致
For Each str In a
MessageBox.Show(str)
Next
你上面代码中,a就是一个3个元素的数组，从a[0]到a[2]， 用for each的时候，就会遍历你的a数组，上面的代码相当于
for i=0 to a.Length-1
MessageBox.Show(a(i))
next
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