StringFilter

It's used to compare string fields. StringFilter is a type that implements IFilterableType.So it can be used as a type of a property in Filter object. It's used for dynamic comparison. Both comparison type and comparison value are sent by client.

Properties

StringFilter includes following properties;

• Eq: Provides parameter for == operator in expression.
• Not: Provides parameter for != operator in expression.
• Equals: Provides parameter to String.Equals method expression.
• Contains: Provides parameter to String.Contains method expression.
• NotContains: Provides parameter to !String.Contains method expression.
• StartsWith: Provides parameter to String.StartsWith method expression.
• NotStartsWith: Provides parameter to !String.StartsWith method expression.
• EndsWith: Provides parameter to String.EndsWith method expression.
• NotEndsWith: Provides parameter to !String.EndsWith method expression.
• IsNull: Provides parameter to == null comparison in expression.
• IsNotNull: Provides parameter to != null comparison in expression.
• IsEmpty: Provides parameter to String.IsNullOrEmpty method in expression.
• IsNotEmpty: Provides parameter to !String.IsNullOrEmpty method in expression.

Usage

Use StringFilter as type of a property in Filter object.

public class BookFilter : FilterBase
{
    public StringFilter Title { get; set; }
}

That property can be used in the following ways in querystring.

yourdomain.com/books?title.eq=Harry Potter yourdomain.com/books?title.isEmpty=true

All of the above properties can be used.

What is next?

You may also see:

• OperatorFilter