Allowing only number in the textbox

i want text box only needs to allowed numeric no .in other way round . i need to adapt the following code in vb.net .let me know please .

Code:

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Private Sub TxtWeekNo_KeyPress(KeyAscii As Integer)
If KeyAscii = 8 Or KeyAscii = 27 Or KeyAscii = 13 Then Exit Sub 'we need to allow backspace & some other key
If Not (KeyAscii > 47 And KeyAscii < 58) Then
KeyAscii = 0
End If
End Sub

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This is probably the best option out there :

http://www.vbforums.com/showthread.php?t=618778

Not sure how KeyAscii gets to this Sub. Looks like it is a number already. If you are asking about how to test a value in a text box you can use the IsNumeric function.

Quote:

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Originally Posted by Mur16

Not sure how KeyAscii gets to this Sub. Looks like it is a number already. If you are asking about how to test a value in a text box you can use the IsNumeric function.

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That was VB 6 code, that the OP wants to 'convert' into .NET

I see . . .

Code:

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Private Sub TxtWeekNo_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TxtWeekNo.TextChanged
' test to see if TxtWeekNo.Text IsNumeric
End Sub

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I agree with your test for IsNumeric. The problem I can foresee here is the fact that sometimes special keys also needs allowance. Keys such as the Backspace, perhaps even the Delete key should be allowed. Another thing to consider here is the formatting of the numbers, ie, the presenting of them. Will decimals be allowed. Will a thousands-separator be needed and so forth. I was initially thinking about the Masked Edit Box, but decided to go with the VBForums link, as it is more useful at the end of the day

Hi

Check out this link

http://www.vb-helper.com/howto_net_a...ly_digits.html

Curt