Ok here's my dilemma. here's this code I have:
If e.KeyCode = Keys.A Then
TextBox1.AppendText("C, ")
PictureBox2.Visible = True
My.Computer.Audio.Play(My.Resources.C, AudioPlayMode.Background)
End If
Now when I enter this under Form1_KeyDown, visual basic thinks this:
'KeyCode is not aa member of 'System.EventArgs'
Now I've seen this code work before, but it isn't here. Any help?
Here's the full code:
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs)
If e.KeyCode = Keys.A Then
TextBox1.AppendText("A, ")
PictureBox2.Visible = True
My.Computer.Audio.Play(My.Resources.C, AudioPlayMode.Background)
End If
If e.KeyCode = Keys.S Then
TextBox1.AppendText("C,")
PictureBox14.Visible = True
My.Computer.Audio.Play(My.Resources.D, AudioPlayMode.Background)
End If
End Sub
Not sure why you method definition declares e
as EventArgs
, but the fix is simply to make the parameter of type KeyEventArgs
. This is because EventArgs
(naturally) does not contain a property called KeyCode
, but KeyEventArgs
does!
Change your event handler method definition to the following:
Private Sub foo_KeyDown(sender As Object, e As KeyEventArgs)
If e.KeyCode = Keys.A Then
TextBox1.AppendText("A, ")
PictureBox2.Visible = True
My.Computer.Audio.Play(My.Resources.C, AudioPlayMode.Background)
ElseIf e.KeyCode = Keys.S Then
TextBox1.AppendText("C,")
PictureBox14.Visible = True
My.Computer.Audio.Play(My.Resources.D, AudioPlayMode.Background)
End If
End Sub
It sounds like your method is using the wrong EventArgs. The Control.KeyDown event sends it as a System.Windows.Forms.KeyEventArgs. So your code should read as
Private Sub Form1_KeyDown(sender As Object, e As System.Windows.Forms.KeyEventArgs)
// code here
End Sub
I've found sometimes you need to provide the full object type similar to the below:
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
MsgBox(e.KeyCode.ToString()) 'Message what the keycode
If (e.KeyCode = Keys.A) Then
MsgBox("e.KeyCode = Keys.A") 'Message that I've found the A
TextBox1.AppendText("C, ")
PictureBox2.Visible = True
My.Computer.Audio.Play(My.Resources.C, AudioPlayMode.Background)
End If
End Sub
Have you also tried testing this in a textbox on the form similar to the below (textbox in example is named TextBoxKeyTest)?
Private Sub TextBoxKeyTest_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBoxKeyTest.KeyDown
MsgBox(e.KeyCode.ToString())'Message what the keycode
If (e.KeyCode = Keys.A) Then
MsgBox("e.KeyCode = Keys.A")'Message that I've found the A
TextBox1.AppendText("C, ")
PictureBox2.Visible = True
My.Computer.Audio.Play(My.Resources.C, AudioPlayMode.Background)
End If
End Sub
This should work in VB 2010
Private Sub cmdWiden_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyUp
If e.KeyCode = Keys.Up Then Me.Top = Me.Top - 5
If e.KeyCode = Keys.Down Then Me.Top = Me.Top + 5
If e.KeyCode = Keys.Left Then Me.Left = Me.Left - 5
If e.KeyCode = Keys.Right Then Me.Left = Me.Left + 5
End Sub
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