How to Build a Reference to a UserForm Object Property in VBA Using a String

Описание: Discover how to dynamically reference UserForm controls in VBA and set properties using string concatenation effectively.
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This video is based on the question https://stackoverflow.com/q/73136224/ asked by the user 'Drawleeh' ( https://stackoverflow.com/u/16449438/ ) and on the answer https://stackoverflow.com/a/73136341/ provided by the user 'Harun24hr' ( https://stackoverflow.com/u/5514747/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Build a Reference to a UserForm Object Property in VBA Using a String

When working with UserForms in VBA, you may find yourself needing to programmatically reference controls (like buttons) based on dynamic values. This can be particularly useful if you are dealing with a series of controls and want to loop through them or set their properties based on variable inputs.

The Problem: Dynamic Control Referencing

Imagine you have a UserForm with several buttons, and you want to change the caption of one of these buttons based on a numeric value. For instance, if you have a button called CommandButton2, and your code outputs the number 2 as a result of some calculations, you may think of using a straightforward approach like:

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However, this does not work since VBA does not support direct referencing of controls via numeric values in this manner. So, how can you achieve this?

The Solution: Using the Controls Collection

The key to solving this problem is to utilize the Controls collection that VBA provides. This collection allows you to access controls on your UserForm by their names as strings. Here's a step-by-step breakdown of the solution:

Step 1: Declare Your Variable

First, you need to declare a variable to store your button's identifier. This variable will hold the numeric value that represents which button you want to reference.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Access the Control Using the Controls Collection

Now, instead of trying to reference the button directly, you can use string concatenation to build the name of the button and access it through the Controls collection:

[[See Video to Reveal this Text or Code Snippet]]

Complete Example Code

Here’s how your complete subroutine might look:

[[See Video to Reveal this Text or Code Snippet]]

Key Points to Remember

String concatenation is crucial when building the control name dynamically.

The Controls collection allows you to fetch any control on the UserForm by its name, making it flexible for various scenarios.

Ensure that the names of the controls on your UserForm follow a consistent naming convention (like CommandButton1, CommandButton2, etc.) so that your string concatenation works effectively.

Conclusion

By using the Controls collection, you can dynamically reference UserForm controls in VBA. This method enhances your ability to create more dynamic and user-friendly applications. Whether you are looping through buttons or setting properties based on user interactions, this technique will serve you well.

Implement this in your own applications and elevate your VBA programming skills today!