Need guide line for MVC action method with Bind attribute

Bind attribute lets you “fine-tune” the model-binding process of certain parameter Type, without registering a custom ModelBinder specific to the Type.

For example, assume your Action is expecting a Person parameter defined as follows:

public class Person
{
    public Person(string firstName, string lastName, Gender gender)
    {
        this.FirstName = firstName;
        this.LastName = lastName;

        if (gender == Gender.Male)
            this.FullName = "Mr. " + this.FirstName + " " + this.LastName;
        else
            this.FullName = "Mrs. " + this.FirstName + " " + this.LastName;
    }

    public string FirstName { get; set; }
    public string LastName { get; set; }
    public Gender Gender { get; set; }

    // 'FullName' is a computed column:
    public string FullName { get; set; }
}

And the Action:

public ActionResult Edit(Person person)
{
    ...
}

Now, if someone is posting the following JSON:

{
    "FirstName":"John",
    "LastName":"Smith",
    "Gender":"Male",
    "FullName":"Mrs. John Smith"
}

Your Action will now have a person with the wrong FullName (‘Mrs’ instead of ‘Mr’).

To avoid such behavior you can use the Bind attribute and explicitly exclude the FullName property from the binding process (‘Black-list’):

public ActionResult Edit([Bind(Exclude="FullName")] Person person)
{
    ...
}

Alternatively, you can use Include to ignore (‘Black-list’) all properties and only include (‘White-list’) the specified properties:

public ActionResult Edit([Bind(Include="FirstName,LastName,Gender")] Person person)
{
    ...
}

More info on MSDN.