Visual C# | Validating forms exercise | Use an ErrorProvider control in a form

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Software ==> Visual C#  (79 exercises)
Version ==> Any version of C#
Topic ==> Validating forms  (6 exercises)
Level ==> Average difficulty
Subject ==> C# training
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Add the existing form called frmNewHeart from the folder above into your project (or use a version you've already created).

Add an ErrorProvider control called errTypical to your form.

Add code to the Validating and Validated events of the two text boxes so that:

  • the ErrorProvider control displays Enter a name next to the name if you leave it blank; and
  • the ErrorProvider controls displays Enter an age or Enter a valid age next to the age, if you either leave it blank or enter something which isn't a number

Here's what you should see if you leave the age blank:

Visual C Sharp 2010 exercise - Validating forms (image 1)

Katie has left her age blank

Check everything is working OK, then close down your form.

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.
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