Formats all values to empty strings to prevent displaying text in cells.

Namespace: Dapfor.Net.Formats
Assembly: Dapfor.Net (in Dapfor.Net.dll) Version: (


public class EmptyFormat : IFormat
Visual Basic
Public Class EmptyFormat
	Implements IFormat
Visual C++
public ref class EmptyFormat : IFormat
type EmptyFormat =  
        interface IFormat


A very important feature in .Net Grid is its ability to work directly with application business logic. Business logic is a set of classes that may have certain properties returning specific values, i.g. prices, quantities, dates, etc. Generally these values are represented by primitive types, such as System.Int32, System.Double, System.Decimal etc. To show this data in grid cells, it's sufficient to convert the necessary values into the System.String type by calling Object.ToString() or String.Format("{0}", value). However, this approach is not flexible and doesn't support parsing strings to objects. To fill in for this, the .Net Grid provides a very powerful system of formats to convert values into strings and vice-versa. These formats are fully customizable. For instance, the grid can display empty strings instead of "0" when a value equals 0 or add a separator between thousands or some prefix or suffix like "$". These formats can also parse strings back into values. For application programming it's better to have a set of format classes, where data presentation is centralized.

In programming, formats can be defined in the following places:

This format can be declared with the EmptyFormatAttribute. The following example demonstrates this:

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//Some data object
public class Product1
    private double price;

    //There is no displayed text in cells.
    public double Price
        get { return price; }

//Other data object
public class Product2
    private double price;

    public double Price
        get { return price; }

//Populate the grid with data objects
public void PopulateGrid(Grid grid)
    //Initialize grid
    grid.Headers.Add(new Header());
    grid.Headers[0].Add(new Column("Price"));

    //Populate grid. Only the Product2 price will displayed
    grid.Rows.Add(new Product1());
    grid.Rows.Add(new Product2());

Inheritance Hierarchy


See Also