how to convert into Upper case in keypress event

[jamesjing]

Hi,

In vb6, we can use KeyAscii = Asc(UCase(Chr(KeyAscii))) in the keypress event to convert any char into its uppercase when the key is pressed.

How to do this in vb.Net?

Please give me a help.


Thanks,

James

[salvelinus]

Try e.keychar = UCase(e.keychar).
I use e.keychar to check if a keychar = some value, but haven't tried this out.

[jamesjing]

Hi salvelinus


It give me error message : keychar is read only.
Any help?

Thanks,

James

[Edneeis]

If you want all of the text uppercase then you can use TextBox1.Text=TextBox1.Text.ToUpper which you could run in the KeyPress or in Validate. I believe the Char type has a ToUpper method as well so this would probably work too; e.keychar.ToUpper.

[Mike Hildner]

I've used this before for a mobile app. It works fine, but right now I can't remember why I had to set the position and handled etc. - maybe it's not the best code...

Private Sub TextBoxDOB_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBoxDOB.KeyPress
        If e.KeyChar.IsLower(e.KeyChar) Then
            ' Save current location
            Dim pos As Integer = TextBoxDOB.SelectionStart
            TextBoxDOB.Text = TextBoxDOB.Text & e.KeyChar.ToUpper(e.KeyChar)
            TextBoxDOB.SelectionStart = pos + 1
            e.Handled = True
        End If
    End Sub

[PT Exorcist]

If you're using a TxtBox there is a property that puts all the letters in uppercase

[Mike Hildner]

You're right, CharacterCasing is the property. FWIW, this property is not available in the Compact Framework, hence my funky work-around.