Check out example codes for "run a command line from vb.net app". It will help you in understanding the concepts better.

Code Example 1

Public Module Extensions
''' <summary>
''' Extension method to run string as CMD command.
''' </summary>
''' <param name="command">[String] Command to run.</param>
''' <param name="ShowWindow">[Boolean](Default:False) Option to show CMD window.</param>
''' <param name="WaitForProcessComplete">[Boolean](Default:False) Option to wait for CMD process to complete before exiting sub.</param>
''' <param name="permanent">[Boolean](Default:False) Option to keep window visible after command has finished. Ignored if ShowWindow is False.</param>
<Extension>
Public Sub RunCMD(command As String, Optional ShowWindow As Boolean = False, Optional WaitForProcessComplete As Boolean = False, Optional permanent As Boolean = False)
    Dim p As Process = New Process()
    Dim pi As ProcessStartInfo = New ProcessStartInfo()
    pi.Arguments = " " + If(ShowWindow AndAlso permanent, "/K", "/C") + " " + command
    pi.FileName = "cmd.exe"
    pi.CreateNoWindow = Not ShowWindow
    If ShowWindow Then
        pi.WindowStyle = ProcessWindowStyle.Normal
    Else
        pi.WindowStyle = ProcessWindowStyle.Hidden
    End If
    p.StartInfo = pi
    p.Start()
    If WaitForProcessComplete Then Do Until p.HasExited : Loop
End Sub
End Module

Code Example 2

Sub systemcmd(ByVal cmd As String)
    Shell("cmd /c """ & cmd & """", AppWinStyle.MinimizedFocus, True)
End Sub

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