htmlhelper radiobutton radiobuttonfor ASP.NET MVC

In ASP.NET MVC, there are two HTML helpers that can be used to create radio button input elements in a view: RadioButton and RadioButtonFor.

1. RadioButton HTML helper:
   The RadioButton HTML helper is a general-purpose helper method that creates a radio button input element in the view. Here is an example usage of RadioButton:

@Html.RadioButton("IsAdmin", "true")
@Html.Label("IsAdmin", "Yes")
@Html.RadioButton("IsAdmin", "false")
@Html.Label("IsAdmin", "No")

This will generate two HTML input elements with the name "IsAdmin" and values of "true" and "false" respectively. When one of the radio buttons is selected, the corresponding value will be sent to the server. The Label helper method is used to create a label for each radio button.

2. RadioButtonFor HTML helper:
   The RadioButtonFor HTML helper is a strongly-typed helper method that creates a radio button input element for a property of the model that is passed to the view. Here is an example usage of RadioButtonFor:

@Html.RadioButtonFor(model => model.IsAdmin, "true")
@Html.LabelFor(model => model.IsAdmin, "Yes")
@Html.RadioButtonFor(model => model.IsAdmin, "false")
@Html.LabelFor(model => model.IsAdmin, "No")

This will generate two HTML input elements with the name "IsAdmin" and values of "true" and "false" respectively. When one of the radio buttons is selected, the corresponding value will be sent to the server. The RadioButtonFor helper method uses lambda expressions to generate the name and initial value of the input element based on the model property that is passed to it. The LabelFor helper method is used to create a label for each radio button.

Using RadioButtonFor is generally considered to be better practice than using RadioButton because it provides stronger type checking and reduces the likelihood of runtime errors. Additionally, it helps to prevent against cross-site scripting (XSS) attacks by automatically encoding the input.