C#: Run process and then kill it using a button

Question

I hope that you can help me with this one, my C# is very rusty.

I'm running an executable when the form loads.

    private void Form1_Load(object sender, EventArgs e)
    {
        ProcessStartInfo exe = new ProcessStartInfo();
        exe.Arguments = "arguments";
        exe.FileName = "file.exe";
        Process.Start(exe);
    }

And I would like to kill that process using a button, but I don't know how to achieve that.

    private void button1_Click(object sender, EventArgs e)
    {

    }

Thanks.

Answer 1

Process.Start returns an object of type Process. You can save it into variable, then use the method Kill, which Immediately stops the associated process (msdn)

For example declare a field at Form1 level:

class Form1
{
    private Process process;

    private void Form1_Load(object sender, EventArgs e)
    {
        //running notepad as an example
        process = Process.Start("notepad"); 
    }

    //and then at button handler kill that process
    private void button1_Click(object sender, EventArgs e)
    {
        //consider adding check for null
        process.Kill();
    }
}