Getting 'Object reference not set to an instance of an object' error when adding a control in non-d

Getting 'Object reference not set to an instance of an object' error when adding a control in non-d

I built a user control using VS.NET. Of course I used the design view to place my controls within, but when I wanted to add a control in my user control not using the design (code), I kept getting the error: Object reference not set to an instance of an object." I can't find any method that builds the other controls so I can put a building code like constructor or something. Please help!

    Requires Free Membership to View

    Login

    When you register, you'll begin receiving targeted emails from my team of award-winning writers. Our goal is to provide a unique online resource for developers, architects and development managers tasked with building and maintaining enterprise applications using Visual Basic, C# and the Microsoft .NET platform.

    Hannah Smalltree, Editorial Director

    By submitting your registration information to SearchWinDevelopment.com you agree to receive email communications from TechTarget and TechTarget partners. We encourage you to read our Privacy Policy which contains important disclosures about how we collect and use your registration and other information. If you reside outside of the United States, by submitting this registration information you consent to having your personal data transferred to and processed in the United States. Your use of SearchWinDevelopment.com is governed by our Terms of Use. You may contact us at webmaster@TechTarget.com.

The code that initializes the controls you drop on the design surface is inside the InitializeComponent method that gets added automatically. You shouldn't modify this method as it gets regenerated everytime you change something on the page design view. The proper place to initialize your controls would be the page constructor, or directly at variable declaration time.

This was first published in April 2004

Back to top