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本节内容承接上一节,主要看看如何获得某个进程的属性。
窗体设计如下:
当按下“进程列表”按钮后,会在listview1中显示所有的进程及其ID,选中某个进程,将在右边文本框中显示该进程的信息。
具体代码如下:
按下按钮:
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
For Each pro As Process In Process.GetProcesses
Dim lvPro As New ListViewItem(pro.ProcessName)
lvPro.SubItems.Add(pro.Id)
ListView1.Items.Add(lvPro)
Next
End Sub
点击listview中某个进程项:
Private Sub ListView1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ListView1.SelectedIndexChanged
If ListView1.SelectedItems.Count <> 1 Then
Exit Sub
End If
Dim lvpro As New ListViewItem()
lvpro = ListView1.SelectedItems(0)
Dim proid As Integer = Integer.Parse(lvpro.SubItems(1).Text)
Dim pro As Process = Process.GetProcessById(proid)
Dim proinfo As String = ""
proinfo &= "进程的名称:" & pro.ProcessName & ControlChars.CrLf
proinfo &= "物理内存量:" & pro.WorkingSet64 & ControlChars.CrLf
proinfo &= "最大物理内存:" & pro.PeakWorkingSet64 & ControlChars.CrLf
proinfo &= "虚拟内存量:" & pro.VirtualMemorySize64 & ControlChars.CrLf
proinfo &= "最大虚拟内存:" & pro.PeakVirtualMemorySize64 & ControlChars.CrLf
Try
proinfo &= "进程启动的时间:" & pro.StartTime.ToString("yyyy-MM-dd HH:mm:ss") & ControlChars.CrLf
Catch ex As Exception
proinfo &= "进程启动的时间:-" & ControlChars.CrLf
End Try
Try
proinfo &= "总的处理器时间:" & pro.TotalProcessorTime.ToString & ControlChars.CrLf
Catch ex As Exception
proinfo &= "总的处理器时间:-" & ControlChars.CrLf
End Try
Try
proinfo &= "主窗口标题:" & pro.MainWindowTitle & ControlChars.CrLf
Catch ex As Exception
proinfo &= "主窗口标题:-" & ControlChars.CrLf
End Try
TextBox1.Text = proinfo
End Sub
为了防止出错,在代码中加入了try...catch语句。
运行时结果如图:
由于.net平台下C#和vb.NET很相似,本文也可以为C#爱好者提供参考。
学习更多vb.net知识,请参看vb.net教程目录
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