What is a simple explanation for displayfor and displaynamefor in asp.net?

Question

I have a class

public class Item
{
    public int ItemId { get; set; }

    [Required(ErrorMessage = \"Category is required\")]
    [Range(1, int.MaxValue, Error         


        

Answer 1

Almost there. :)

The DisplayNameFor shows the name of the property or the string defined in the display attribute for the property.

public class Item
{
    public int ItemId { get; set; }

    [Display(Name = "Current name")]
    [Required(ErrorMessage = "Name is required")]
    [StringLength(160)]
    public string Name { get; set; }

    [Required(ErrorMessage = "Price is required")]
    [Range(0.01, 100.00,
        ErrorMessage = "Price must be between 0.01 and 100.00")]
    public decimal Price { get; set; }

}

Then @Html.DisplayNameFor(m => m.Name) would show 'Current name'.

@Html.DisplayNameFor(m => m.Price) would just show Price.

Note that you can also localize the display attribute like this:

[Display(ResourceType = typeof(MyResources), Name = "Name")]
public string Name{ get; set; }

Which in turn will look in the MyResources resc file. (If setup is done correctly).

The Html.DisplayFor shows the value of the field.