How to Correctly Group Radio Buttons in ASP.NET MVC 5 Views?

Grouping Radio Buttons in ASP.NET MVC 5

Problem:

In an ASP.NET MVC 5 view, a group of radio buttons is expected to be grouped by question, but they are all placed into a single group. When a radio button in one question is selected, the radio buttons in other questions become deselected.

Cause:

The challenge arises from the improper binding of radio buttons and the generation of duplicate name attributes. The name attribute should be unique for each radio button group (i.e., for each question).

Solution:

To achieve the desired grouping, the following steps are necessary:

1. Create View Models: Construct view models that align with the data being displayed and bound in the view. In this case, consider using view models representing a question with its possible answers.
2. Modify the View: Refine the view to utilize these view models and generate radio buttons correctly. Utilize a loop (or EditorTemplate) to dynamically create radio buttons with unique name attributes for each question.

Alternative Approach:

Here's another comprehensive approach to grouping radio buttons:

1. Modify the Controller: Add a method to the controller that populates a view model with question and answer information.
2. Create View Models: Design view models to represent questions with their potential answers and a property to store the selected answer.
3. Update the View: In the view, utilize loops and the Html.RadioButtonFor method to create radio buttons grouped appropriately. Include the view model's property for the selected answer to bind the selected value.
4. Modify the Controller: Add code to the controller's post action method to retrieve the selected answer values from the view model.

By adopting these suggestions, radio buttons can be grouped effectively, allowing for proper data binding and correct form submission in your ASP.NET MVC 5 project.

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