Validating text box in vb

06-Dec-2019 06:57

Let's say you have a form with textbox control, textbox1.

Place an errorprovider control on the form (it is not a visible control).

Leave 'Create A Pattern For Surname Dim str Surname As String = "^[a-z A-Z\s] $" Dim re Surname As New Regex(str Surname) 'Attach Pattern To Surname Textbox 'Not A Match If Not re Surname.

Add the following code to validate your phone number textbox: 'Function To Check Phone Number Validity Public Function Validate Phone(By Val str Phone Num As String) As Boolean ''Create Reg Exp Pattern Dim str Phone Pattern As String = "^[1-9]\d-[1-9]\d-\d$" 'Create Reg Ex Object Dim re Phone As New Regex(str Phone Pattern) 'Something Typed In If Not String.

Doing so can cause your application or the operating system to stop responding.

Add this to validate the surname textbox: Private Sub txt Surname_Leave(sender As Object, e As System.

For example I would like to bind button Is Enabled property to that deciding to enable button only in user input is valid.I know, I can validate for a certain date format (yyyy/mm/dd) for example. The real question is whether there is some sort of excel function that does the similar thing that I mentioned above (enter date in a variety of formats..)Thanks. Want to get great answers to your Tek-Tips questions?

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