how can i know the keyAscii vlaue of "delete" key

[raghunadhs]

with help of key press evnt i am able to find the KeyAscii values.. but i am unable to find the ascii values of "delete","home" ,"pageUp", ...etc..

In my application there is a need to find whether user pressed "delete" key or not.

if u know how to do this.. pls let me know it..

Thanks in advance:
regards:
raghunadhs

[Killer42]

Generally speaking, an easy way to find out these things is to run a test program, do the action yourself (press Delete, or whatever) and test the result. For example, put code in the KeyPress event to print KeyAscii to the immediate window.

However, I suspect that these particular keys may not make it to the KeyPress event. You may need to trap them in KeyDown, which occurs first. Note, if you want to be able to test these things for the entire form before they reach the individual controls, set the form's KeyPreview property to True.

[kadghar]

It's 8

and as killer said, many of those cannot be used in the KeyPress, but you can use Delete in KeyDown, so dim a boolean and you're done

[CODE=vb]option explicit
dim boo1 as boolean

sub text1_keydown(k eycode as integer...)

if keycode = 8 then boo1 = true

end sub[/CODE]

hope that helps

[cutequencher]

another thing is to use the keys property...
example:
keys.delete

i have a code here, maybe it could help you...
Protected Overrides Function ProcessDialogKe y(ByVal keyData As System.Windows. Forms.Keys) As Boolean
Dim pt As Point
Dim hti As DataGrid.HitTes tInfo

pt = Me.PointToClien t(Cursor.Positi on)
hti = Me.HitTest(pt)

If keyData = Keys.Delete Then
If hti.Type = Me.HitTestType. RowHeader Then
If MessageBox.Show ("Delete this row?", "Confirm Delete", _
MessageBoxButto ns.YesNo) = DialogResult.No Then
Return True
Else
RaiseEvent DeletedRow(Me, New EventArgs)
End If
End If
End If

End Function

i am using it for the verification if the user is about to delete a data...
keys properties will provide you everything you need..

[shaileshb]

hi all,

ln the above to post, they mentioned that u have to use keydown or keyup event this is correct
if u want to find out ascii values for alphabets like "A to Z" or "a to z" then u should go for keypress event else u can go for keydown or keyup event
ex.


'if u want to go for delete, pgup, pgdown, F1, F2...etc

Sub Text1_KeyDown(K eyCode As Integer, Shift As Integer)
msgbox keycode
End sub

'if u wnat to find ascii values for "A to Z" etc.

Sub Text1_KeyPress( KeyAscii As Integer)
msgbox KeyAscii
End Sub

[Killer42]

another thing is to use the keys property...
example:
keys.delete
...

That depends on the VB version. I don't think we've established what version is in use, yet. But I don't think VB6 has this.

[hariharanmca]

That depends on the VB version. I don't think we've established what version is in use, yet. But I don't think VB6 has this.

Yha, But we can use KEYDOWN or KEYUP Events there

Private Sub ControlName_KeyDown(KeyCode as Integer, Shift as Integer)
         if KeyCode = vbKeyDelete then
                do true stmt....
         else
                do False stmt....
        endif
End Sub

i think this will help u.

(I don't have VB in my system so not tested)

[raghunadhs]

Thanks all,
I got it, through u r suggestions. Thank u very much.
regards:
raghunadhs