Key Char = "" End If End Sub =65) check is for excludng Alphabets. =32 check is for excluding Space character inbetween the numbers. Length - 1) ' Put the cursor and the END of the corrected number obj Txt Box. Text, "") End Sub Private Sub txt Case ID_Key Press(By Val sender As Object, By Val e As System.
This is what I have; obviously it's not great as I am having problems. Private Sub Text Box1_Key Press(By Val sender As Object, By Val e As System.
Handled = True End If End Sub Private Sub Text Box_Text Changed(By Val sender As Object, By Val e As System. Text Changed Dim digits Only As Regex = New Regex("[^\d]") Text Box.
Length = 0 Then non Number Entered = True End If Else If ob. Text Changed), you can do a try to caste entered text into integer, if failure occurs, you just reset the value of the text in Restricted Text Box to last valid entry (which gets constantly updating under the temp1 variable). In the sub that loads with the form (or mybase.load), initialize temp1 to the default value of Restricted Text Box. Text = Nothing) Then temp1 = Nothing Else Try temp1 = CInt(Restricted Text Box.
On each entry in textbox (event - Handles Restricted Text Box. Text) 'If user inputs integer, this will succeed and temp will be updated Catch ex As Exception Restricted Text Box. To String 'If user inputs non integer, textbox will be reverted to state the state it was in before the string entry End Try End Sub Private Sub Price Txt_Validating(By Val sender As Object, By Val e As System.
Key Code for 'Space' Key is '32' which is also not needed. ") Try ' If something bad was entered delete the last character obj Txt Box.
If you want to exclude Symbols also from entering into the textbox, then include the below condition also in the 'onkeydown' property. Key Codes from '90' to '222' which are other symbols are also not needed.
Right Then ' A non-numerical keystroke was pressed.
Text Dim temp1 As Integer 'initialize temp1 default value, you should do this after the default value for Restricted Text Box. Text) Catch ex As Exception temp1 = Nothing End Try End If Private Sub text Box_Text Changed(sender As System.
Length End If End Sub Then whenever the user enters text it evaluates the string and only returns numeric values that are within the bounds of a standard Integer.
Handled = True End If End Sub Public Sub Phonenumber_Leave(By Val sender As Object, By Val e As System.
Focus() End If End Sub Public Sub Email_Leave(By Val sender As Object, By Val e As System.