Why can't I reference System.ComponentModel.DataAnnotations?

Question

I\'m trying to use DataAnnotations in my WPF project to specify a maximum length of strings, with the following:

using System.ComponentModel.DataAnnotations;         


        

Answer 1

To Reference System.ComponentModel.DataAnnotations

In a code file to have Using System.ComponentModel.DataAnnotations; at the top of the file such as:

using System.ComponentModel.DataAnnotations;

Add a .NET reference to your project by right clicking the project in solution explorer:

Hope this helps! This question helped me.