Question

In my project I have a string field in the view model to display in a form and post back to the controller.

However for some reason, I’d like to display a checkbox, and retrieving string “True”/”False” from user input

I’ve searched through the internet and found this
How to render a model property of string type as checkbox in ASP.NET MVC
which leverage the editor template and achieve my need.

My question is that how do this be achieved, because in the editor template, I can only see it how to interpret the string to a checkbox, but it never explain or show how the checkbox value will be bind back to the string field with “True”/”False”.

What should I do if I wanted “Yes”/”No” instead of “true”/”false”, are there any converter that I need to make to parsing the checkbox to string?

Sorry for my bad English and lack of mvc knowledge, I just started MVC and web development for a few days.

UPDATE:
1. I am using ViewModel to bind with the forms, so I need something like Html.CheckBoxFor(x=>x.value)
while x.value is a string, obviously it is not possible with the default CheckboxFor

Answer 1

I think what you are asking is how to save the value back into your database, which is more of a back-end C# or VB question.

As you know, when you submit a form on an HTML page, if a checkbox is ticked, it’s value will be passed in the POST parameters back to the server:

front-end HTML:

<input type="checkbox" name="theCheckBox" value="Yes" />

back-end C# in Page_Load() or similar

if(Request.Form["theCheckBox"] == "Yes") {
    // save value "Yes" into database
}

just remember that if the checkbox is NOT TICKED, Request.Form[“theCheckBox”] will be null