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Access Developer 47

Handling Multiple Instances of the Same Form


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Welcome

Welcome to Microsoft Access Developer Level 47, brought to you by Access Learning Zone. I'm your instructor, Richard Rost.

In this class, we will explore how to open multiple instances of the same form. For example, you will learn how to open multiple customers simultaneously or work with several products or orders at once, each in its own instance of the same form.

We will cover key concepts such as creating custom collections (an object type in Access), tracking individual forms with unique key values, and cascading forms so they open neatly layered on the screen.

Resources

Topics Covered

In Lesson 1, we will learn how to open multiple copies of a form, such as viewing different customers or products simultaneously. We will learn about creating and managing collections, adding objects to a collection, and tracking them effectively.

In Lesson 2, we will discover how to list all open forms, initialize collections to avoid errors, and handle closed forms. We will also implement a custom key-value system to track forms (instead of relying on built-in methods) for better control.

In Lesson 3, we will learn how to avoid issues like write conflicts by ensuring the same customer form is not opened twice. You will also learn how to focus on specific forms, loop through open forms, and cascade them neatly when multiple instances are opened.

In Lesson 4, we will wrap up by resetting collections when all forms are closed to keep memory usage efficient. We will review our code for optimization and best practices.

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Questions?

Please feel free to post your questions or comments below. If you are not sure as to whether or not this product will meet your needs, I'd rather help you before you buy it. Remember, all sales are final. Thank you.

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Copyright 2025 by Computer Learning Zone, Amicron, and Richard Rost. All Rights Reserved. Current Time: 2/15/2025 2:21:21 PM. PLT: 1s
Keywords: access developer 47 Multiple Form Instances, Open Multiple Instances of a Form, Creating Collections in VBA, Adding Objects to a Collection, Managing Forms with Collections, Form RecordSource VBA, List Open Forms, Tracking Forms with Key Values, Prevent D  Page Tag: whatsnew  PermaLink  Microsoft Access Developer 47