attribute dependent on another field

Question

In a model of my ASP.NET MVC application I would like validate a textbox as required only if a specific checkbox is checked.

Something like

public bo         


        

Answer 1

Just use the Foolproof validation library that is available on Codeplex: https://foolproof.codeplex.com/

It supports, amongst others, the following "requiredif" validation attributes / decorations:

[RequiredIf]
[RequiredIfNot]
[RequiredIfTrue]
[RequiredIfFalse]
[RequiredIfEmpty]
[RequiredIfNotEmpty]
[RequiredIfRegExMatch]
[RequiredIfNotRegExMatch]

To get started is easy:

1. Download the package from the provided link
2. Add a reference to the included .dll file
3. Import the included javascript files
4. Ensure that your views references the included javascript files from within its HTML for unobtrusive javascript and jquery validation.