New to Visual Basic

[PoddyCo]

Hi, :-\ The scenerio: I would like the user to enter data into a text box, before clicking continue. If the data is numeric then the program should assign it to a variable and continue as it should, but if the data is not numeric, the program should respond with a message alerting the user of this mistake. The question: Is there anyone who can either help me directly or atleast point me in the right direction to work it out myself? Any assistance in this matter would be greatly appreciated.

[Lost User]

Use the TryParse()[^] method to check the string from the text box and take action accordingly.

Unrequited desire is character building. OriginalGriff I'm sitting here giving you a standing ovation - Len Goodman

[DaveAuld]

Further to what Richard has said take a look at the following textbox events; textchange, validation or even the lost focus event. You can use these events to automatically trigger your checking code without the user having to do anything.

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[JR212]

Is a numuricupdown not beter. it can only contain nummeric values

[coded007]

You can you on keypress event of text box. Handle e.keychar not a character and display msg.

[PoddyCo]

Thanks people:thumbsup:, not able to test any of suggestions as my computer is down :sigh: , but when I get a chance, I will let you know how I get on. Thanks again for the help.

[elgaabeb]

Hi, a snippets is on this page. Validation text box on VB[^] Best regards. EL GAABEB.

[daveh6045]

validate each keypress on the textbox

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress

If InStr("0123456789", e.KeyChar) < 1 Then
    e.Handled = True

End If

End Sub