How to apply a validation rule for control in WPF-MVVM

Question

Hi All,

Currently I am working on WPF with MVVM patern. I created one sample apps like this

View

------

<TextBox Grid.Row="0" Grid.Column="1" Width="100" HorizontalAlignment="Center" Text="{Binding Student.Name, Mode=TwoWay}"/>

ViewModel

--------------

public Student Student

        {

            get 

            {

                return _student;

            }

            set 

            {

                _student = value;

                NotifyPropertyChanged("Student");

            }

        }

Model

--------

public class Student

    {

        public string Name { get; set; }

        

    }

Can you please any one explain about how to validate a property for example "Name" 

We have to apply validation rule in ViewModel or Model level.