How to handle keypress in VB.NET

[sgrec7]

Hi, sgrec7 here.

so anyway in VB 6 this is how you would use keyascii's

private sub form_keypress (keyascii as integer)

if keyascii = 13 enter key then
end
end if

end sub

that was easy, but how the f&(# do you do that in VB 8 ???? any help will be much appreciated !! thanks

[QVeen72]

Hi,

IN VB8, it is :

Private Sub TextBox1_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyUp
        If e.KeyCode = Keys.Enter Then
            MsgBox("Veena")
        End If
    End Sub
 

REgards
Veena

[Killer42]

A couple of questions.

• VB6 also had a KeyUp event. Is there an equivalent of KeyPress?
• What the heck is VB8? Didn't they stop numbering them that way after version 6?

[QVeen72]

Hi Killer,

Yes, they stopped Numbering, but still

VB.Net2003 is VB7
VB.Net2005 is VB8.

VB7 and VB8 both have same KeyPress Event..

REgards
Veena

[Killer42]

Yes, they stopped Numbering, but still
VB.Net2003 is VB7
VB.Net2005 is VB8.

Thanks. This is the first time I've heard them referred to that way.

But I thought there was also a 2002 version of VB.Net, though. What was that, VB6.5?

[Martin2007]

A couple of questions.

• VB6 also had a KeyUp event. Is there an equivalent of KeyPress?
• What the heck is VB8? Didn't they stop numbering them that way after version 6?

Hey, VB8 is another name for VB 2005... there is a good page about it on wikipedia... just wiki VB 2005.

In response to ur comment, yes there is a Keypress equivalent....

The following code will capture a keypress and then use the keycodes to determine which key was pressed... in this case check for the enter key...

Private Sub TextBox_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) 
_ Handles TextBox.KeyPress
        If e.KeyChar = Microsoft.VisualBasic.ChrW(13) Then
'DO SOMETHING'
        End If
    End Sub
 

This particular checks for a keypress in a text box, but i think you can check for anykeypress by replacing the textbox with the name of the form or other component.

Hope this helps...

Martin

[Killer42]

Hey, VB8 is another name for VB 2005... there is a good page about it on wikipedia... just wiki VB 2005.

Ah yes, I see. QVeen72 was mostly right. VB2003 is referred to as VB7.1.

[sgrec7]

A couple of questions.

• VB6 also had a KeyUp event. Is there an equivalent of KeyPress?
• What the heck is VB8? Didn't they stop numbering them that way after version 6?

Yea sorry Killer, it's known as both "VB 8" and "Visual Basic 2005"

[sgrec7]

...The following code will capture a keypress and then use the keycodes to determine ...

You know Martin, I think that might actually work !! thanks!!

And i forgot to say before, thanks to the admins for changing the name of my thread more appropriate to the subject. Thanks guys

[sgrec7]

Hey, VB8 is another name for VB 2005... there is a good page about it on wikipedia... just wiki VB 2005.

In response to ur comment, yes there is a Keypress equivalent....

The following code will capture a keypress and then use the keycodes to determine which key was pressed... in this case check for the enter key...

Private Sub TextBox_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) 
_ Handles TextBox.KeyPress
        If e.KeyChar = Microsoft.VisualBasic.ChrW(13) Then
'DO SOMETHING'
        End If
    End Sub
 

This particular checks for a keypress in a text box, but i think you can check for anykeypress by replacing the textbox with the name of the form or other component.

Hope this helps...[/i]

Martin, that code was sooo correct that I'm going to quote you again !!! there is one problem though...

 
_ Handles TextBox.KeyPress
 
 

needs to be changed to:

 
Private Sub form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles me.keypress
 
 

so that it reads it correctly.

also say i wanted something to happen on key "2" keyascii value of 50 do i just change:

 
 If e.KeyChar = Microsoft.VisualBasic.ChrW(13) Then
 
 

to

 
if e.keychar = Microsoft.VisualBasic.chrW(50) then
 
 

or ......

[Martin2007]

Yep looks like you have the idea... I said in my post that the code handled text box presses, but what you have written will allow for keypresses on whole form.

You can use any number in brackets for a keycode, there are lists of what the values are online, I think there is one in MSDN if you just search "keycodes"

Glad I could help!

Martin