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I am creating a form for an assignment where when the form is completed the data entered for each applicant is saved to a DB. Each property for the applicants is created in a Applicant class, some are required some not.

As part of this I need to ask the user to enter the gender of the applicant. What I had initially thought to do and implement was create a checkbox for each gender in my form and dependent on which one is checked in my page model I then save that gender back to the Gender property of my Applicant.cs which is a string. When the OnPost() is run.

This works fine but the Gender property must be Required and when I set the prop to Required in the class and run the application, when I try to submit the form I get an error on the page stating the Gender is required.

What is the best way for me to code this in this case or should I think about an alternative solution altogether? I know I could just get the user to type in the gender in a text box and it will work but I thought a group of checkboxes would be neater.

Thanks in advance,

Boots09
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1 Answers1

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If you want the user to make one choice from a very limited number of options, the best control is the input type="radio". This also has the benefit of working well with Razor Pages validation.

Here is your PageModel property:

[BindProperty, Required]
public string Gender { get; set; }

And here is your form:

<span asp-validation-for="Gender"></span>
<form method="post">
    <input type="radio" asp-for="Gender" value="Male" />Male<br />
    <input type="radio" asp-for="Gender" value="Female" />Female<br />
    <input type="radio" asp-for="Gender" value="Other" />Other<br />
    <input type="submit"/>
</form>
Mike Brind
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  • That is perfect, thanks very much, not sure why I had decided on the checkbox. I'm a total beginner at this stuff!!! It might require a new question but if I had a longer list where the user could select more than 1 option what would be the best way to do that? I tried with a list but the DB doesnt like me trying to add that to it. – Boots09 Mar 12 '19 at 18:42