How to detect key presses in VB.NET?

How do I make VB constantly check for key presses?
Keys on keyboard show up when debugging step by step, but this :( Here is my push code:

Private Sub Form_Main_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles MyBase.KeyPress
    'Keypress Q, A, or Z if the picture is seen for the first time
    'Otherwise one accuracy point is deducted
    If e.KeyChar = Chr(97) Then 'key a
        If PictureBox.Visible = True Then
            If MainArray(X) = 1 Then
                Timer_End = TimeOfDay.Millisecond
                PictureBox.Image.Dispose()
                PictureBox.Image = Nothing
                PictureBox.Visible = False
                Accuracy = Accuracy + 1
                CalcTime()
            Else
                Timer_End = TimeOfDay.Millisecond
                PictureBox.Image.Dispose()
                PictureBox.Image = Nothing
                PictureBox.Visible = False
                Accuracy = Accuracy - 1
                CalcTime()
            End If
        End If
    End If

    'Keypress for second occurance
    If e.KeyChar = Chr(108) Then 'key l
        If PictureBox.Visible = True Then
            If MainArray(X) = 2 Then
                Timer_End = TimeOfDay.Millisecond
                PictureBox.Image.Dispose()
                PictureBox.Image = Nothing
                PictureBox.Visible = False
                Accuracy = Accuracy + 1
                CalcTime()
            Else
                Timer_End = TimeOfDay.Millisecond
                PictureBox.Image.Dispose()
                PictureBox.Image = Nothing
                PictureBox.Visible = False
                Accuracy = Accuracy - 1
                CalcTime()
            End If
        End If
    End If
End Sub

      

        
        
        
      

    

I tried adding this to the code, but it didn't help:

    Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
    Do While PictureBox.Visible = True
        Application.DoEvents()
    Loop
    End Sub