allow percentage only at textbox (VB)
- Thread starter mudhunny
- Start date
Anytime I want to validate something I highly consider regular expressions. If you are not familiar with them, they seem a little confusing at first, but once you get the hang of them it pays off. They are very fast and very streamline. A great site to get you started on Regular Expressions is: http://www.regexlib.com/
I have created the RegEx you were asking for, see below. It forces the user to have at a minimum a decimal point and two numeric i.e. ".00". It also forces the user to stay below 100.00. I think this is exactly what you were asking for, if it isn't you can tweak the regular expression. If you need help just shoot me a PM.
'Imports
Imports System.Text.RegularExpressions
Dim RegExpression As Regex
RegExpression = New Regex("^((100.00)|([1-9][0-9]|[1-9]|)(\.\d\d))$")
If RegExpression.IsMatch(YOUR_TEXT_TO_BE_CHECKED) Then MsgBox("It's a match!") Else MsgBox("Not a match!")
I have created the RegEx you were asking for, see below. It forces the user to have at a minimum a decimal point and two numeric i.e. ".00". It also forces the user to stay below 100.00. I think this is exactly what you were asking for, if it isn't you can tweak the regular expression. If you need help just shoot me a PM.
'Imports
Imports System.Text.RegularExpressions
Dim RegExpression As Regex
RegExpression = New Regex("^((100.00)|([1-9][0-9]|[1-9]|)(\.\d\d))$")
If RegExpression.IsMatch(YOUR_TEXT_TO_BE_CHECKED) Then MsgBox("It's a match!") Else MsgBox("Not a match!")