vb.net 教程 6-2 进程 Process类属性

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

原文地址：https://www.jb51.cc/vb/256071.html