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18-Jun-2020 23:13

Text Box1, "This field does not accept non-numeric values.") Me.

Private Sub txt Validating(sender As Object, e As System.

Unfortunately, the text I have copied includes something else, too, e.g.

“ The fastest way for validation is using regular expressions.

Active Control property to the current form, focus events occur in the following order Enter Got Focus Leave Validating Validated Lost Focus When you change the focus by using the mouse or by calling the Focus method, focus events occur in the following order: Enter Got Focus Lost Focus Leave Validating Validated event provides the hook to perform the validation and Error Provider gives a nice consistent approach to providing the user with feedback on any error conditions.

This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, Math ML, etc.

Here and here are some posts that will help you with code samples.

Agreed that Regular Expressions might be faster, but ... Basically, this code is for a User Control which contains a label, a text box, and an error provider.

Text Box1, "This field does not accept negative values.") Me.

Server side validation is performed by a web server, after input has been sent to the server.

Client side validation is performed by a web browser, before input is sent to a web server.

Dim txt As Text Box = Direct Cast(sender, Text Box) ' See if it’s blank.

Private Sub Form1_Form Closing(sender As Object, e As Form Closing Event Args) Handles Me. Watch the steps in this short video, and the written instructions are below the video Don't miss my latest Excel tips and videos!