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Allow only Numeric ????????

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  4 years ago

  by kariper

  kariper

  Minneapolis,US, United States

  Joined 4 years ago

  hi,
   
  I have a textbox, in that i need to enter only numeric value. how can i do that in VB.Net. ?

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  4 years ago

  by Rollershade

  Colin Harman MACITP

  West Sussex, England, Australia

  Joined 7 years ago

  on text_change use InNumeric funtion,
  

  
  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/script56/html/vsfctisnumeric.asp

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  4 years ago

  by malathirs

  malathirs

  , United States

  Joined 4 years ago
  here is a simple way to accept only numeric enteries...
  
  Private Sub textbox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtPassword.KeyPress
         If (e.KeyChar.IsDigit(e.KeyChar)) Then
             e.Handled = False
         Else
             e.Handled = True
         End If
     End Sub
  
  
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  4 years ago

  by kariper

  kariper

  Minneapolis,US, United States

  Joined 4 years ago

  Thanks a lot guys....but i could not able to modify .. so i added one more line to malathirs's code
  

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

  
         If e.KeyChar.IsDigit(e.KeyChar) Then
             e.Handled = False
         ElseIf Asc(e.KeyChar) = 8 Then
             e.Handled = False
         Else
             e.Handled = True
         End If
  

  
  thanks,
  Kari

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  4 years ago

  by Strabos

  Strabos

  US, United States

  Joined 4 years ago

  Does this code prevent the entry of special characters?
  

  
  here is a simple way to accept only numeric enteries...
  

  
  Private Sub textbox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtPassword.KeyPress
        If (e.KeyChar.IsDigit(e.KeyChar)) Then
            e.Handled = False
        Else
            e.Handled = True
        End If
    End Sub
  

  
  

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  4 years ago

  by Strabos

  Strabos

  US, United States

  Joined 4 years ago

  Does this code prevent the entry of special characters?
  

  
  

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  4 years ago

  by Strabos

  Strabos

  US, United States

  Joined 4 years ago

  Does this code prevent the entry of special characters? and how is it different form IsNum?
  

  
  

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  4 years ago

  by Strabos

  Strabos

  US, United States

  Joined 4 years ago
  Does this code prevent the entry of special characters? and how is it different form IsNum?
  
  server error message.
  
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  1 year ago

  by ziyad6

  MOHAMMAD ZIYAD

  UAE, United States

  Joined 5 years ago

  Guys, You should make use of the power of javascript to allow only numeric in textboxes..

  http://dotnetsoldier.blogspot.com/2008/07/javascript-to-accept-only-numeric.html

  Thanks, Ziyad

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