How can I ensure that users enter only numeric values and display an error message if they input non-numeric characters? Additionally, is there a way

[alimohd]

I'm building a userform in Excel using VBA, and I want to implement data validation for a textbox. How can I ensure that users enter only numeric values and display an error message if they input non-numeric characters? Additionally, is there a way to limit the range of acceptable values?

 

[Micron]

Easy enough to validate textbox data using vba if one knows exactly what is allowed and what is not.
Assuming 456 or 45.6 is allowed but
- 456a is not and "45 6" is not and 4,500 is not (because of the comma) then perhaps:

Private Sub TextBox2_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)

Select Case KeyCode
    'if true, do nothing
    Case vbKey0 To vbKey9, vbKeyBack, vbKeyDecimal, vbKeyTab, vbKeyBack, vbKeyNumpad0 To vbKeyNumpad9, 190
   
    'if true, cancel key press
    Case Else
    KeyCode = False
End Select

End Sub

Otherwise needs editing to allow comma or perhaps other characters you have in mind. Substitute your textbox control name.

 

[Fluff]

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