Alignment issue with Bootstrap dropdowns noticed after dynamically loading dropdown content in Blazor

When working with Blazor, you have the ability to dynamically load content by enclosing it within an @if block and then setting the condition to true, such as when a button is clicked.

Recently, I encountered an issue with a Bootstrap dropdown in my project. The dropdown's contents are supposed to load when the dropdown is first clicked, but for some reason, the right alignment is not respected upon the initial click. Strangely, the alignment is correct on subsequent clicks. It seems to be a problem related to the initial rendering and CSS not being applied correctly. I'm uncertain as to the cause of this issue.

For illustration, you can view an example of this scenario in a Blazor server-side environment here:

Answer №1

After some investigation, it was discovered that Bootstrap dropdowns utilize popper.js. The key to resolving this issue was leveraging Bootstrap's update method to refresh the dropdown's position.

The solution involved simply calling the update method after the dropdown has been rendered.

For a demonstration of this solution applied to the example referenced in the question, please visit:

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