ASP.NET Dynamic Data: Displaying Custom Format And Default Value

By using DisplayFormatAttributes, you can specify how data fields are displayed and formatted by ASP.NET Dynamic Data. Here I have Flyer table I want to change FlyerDate format. I also have FlyerProduct table and I want to change the Price format. Note that Flyer has a relationship with FlyerProduct, hence FlyerProducts can be filtered by Flyer.




First, you need to add a reference to System.ComponentModel.DataAnnotations into your project that contains the EDM.

reference to data annotations

Then, you specify the attributes of the partial class. Create a new class, which I called FlyerMetadata, in order to specify the
custom data formats. Overwriting ToString() will allow to display the custom format in the filters at the FlyerProducts page.

using System.ComponentModel.DataAnnotations;
using System.ComponentModel;
[DisplayColumn("FlyerDate", "FlyerDate", true)]
public partial class Flyer
    public override string ToString()
        return FlyerDate.ToString("MMM-dd-yyyy");
public class FlyerMetadata
    public bool IsValid { get; set; }
    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MMM-dd-yyyy}")]
    public DateTime FlyerDate { get; set; }

This is the result. Note that I also changed the format of the Price on the FlyerProduct partial class. Next post, I will show my solution to display images with a custom field template.

custom data format

custom data format filter


4 thoughts on “ASP.NET Dynamic Data: Displaying Custom Format And Default Value

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  2. You actually make it seem so easy with your presentation but I find this matter to be really something which
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