VB如何结束使用按钮运行的batchfile / cmd命令？

Question

This is the code i'm using:

Public Class Form1
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Process.Start("C:\batchfile.bat")
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
End Sub

I'd like to know how to make Button1_Click kill the "batchfile.bat?" The batchfile is opening a CMD prompt, if that helps anyone in anyway.

Answer 1

You need to start the Process instance returned by Process.Start() in a field in your form.

You can then call the Kill() method.

For example:

Public Class Form1
    Private mySubTask As Process

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        mySubTask = Process.Start("C:\batchfile.bat")
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        mySubTask.Kill()
    End Sub

You will need to figure out what to do if the user clicks start twice.