在Windows中,任务管理器会自动更新笔记本电脑/台式机上所有正在运行的进程。但是,这不是我的意思。
我的问题是,有没有办法使用所有新进程更新 ListBox(最好是Timer1.Tick
由于我的实例(,但要实时更新(每隔设定的时间间隔更新新进程(?
我的ListBox1
充满了当前正在运行的进程。
我尝试过的事情
-
在我的子"
Timer1_Tick
"中,我尝试使用ListBox1.Refresh()
代码,但是,我意识到,所做的只是刷新ListBox
,而不是正在运行的进程。 -
研究类似问题
获取正在运行的进程的代码
Private Sub Mainframe_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim procs() As System.Diagnostics.Process = System.Diagnostics.Process.GetProcesses
Dim f As String
For Each proc As System.Diagnostics.Process In procs
f = GetProcessFileName(proc)
If f.Length > 0 Then
ListBox1.Items.Add(f)
ListBox1.Items.Add("MD5: " & GetMD5String(f)) <-- Not relevant
ListBox1.Items.Add(String.Empty)
End If
Next
End Sub
我的Timer1
代码
Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
Timer1.Enabled = False 'Stops the timer
ListBox1.Update()
ListBox1.Refresh()
Timer1.Enabled = True
End Sub
从我的头顶:应该是这样的。
免责声明:我说的不是那么好的VB;-(
PS:可能你得到一个"不在同一线程上调用异常">
Private Sub Mainframe_Load(sender As Object, e As EventArgs) Handles MyBase.Load
'call it initially
RefreshList()
End Sub
'this sub actually does the lisbox update
Private Sub RefreshList()
Dim procs() As System.Diagnostics.Process = System.Diagnostics.Process.GetProcesses
Dim f As String
'as from @Visual Vincent's comment:
ListBox1.BeginUpdate()
ListBox.Items.Clear()
For Each proc As System.Diagnostics.Process In procs
f = GetProcessFileName(proc)
If f.Length > 0 Then
ListBox1.Items.Add(f)
ListBox1.Items.Add("MD5: " & GetMD5String(f)) <-- Not relevant
ListBox1.Items.Add(String.Empty)
End If
Next
ListBox1.EndUpdate()
End Sub
Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
Timer1.Enabled = False 'Stops the timer
RefreshList()
Timer1.Enabled = True
End Sub