The AndFilter class serves the same purpose as a logical-and operator. It states that the items must match all the filters regrouped within the AndFilter class in order to be processed.

Demonstration

Process all the files in folder that contain the TXT extension and that are between 5k and 10k size.

VB.NET	Copy Code
Dim filter As New SizeFilter() filter.MaxSize = 10240 filter.MinSize = 5120 Dim files As AbstractFile() = myFolder.GetFiles( True, _                                                  New AndFilter( New NameFilter( "*.txt" ), _                                                  filter ) )

C#	Copy Code
SizeFilter filter = new SizeFilter(); filter.MaxSize = 10240; filter.MinSize = 5120;  AbstractFile[] files = myFolder.GetFiles( true,                                           new AndFilter( new NameFilter( "*.txt" ),                                            filter ) );

Since the AndFilter is used by default when combining multiple filters, it is not necessary to create an instance of the AndFilter class. Therefore, we can omit the creation of the class. We can also omit creating a NameFilter class since we are using a basic string filter and the NameFilter class is constructed underneath.

VB.NET	Copy Code
Dim filter As New SizeFilter() filter.MaxSize = 10240 filter.MinSize = 5120  Dim files As AbstractFile() = myFolder.GetFiles( True, "*.txt", filter )

C#	Copy Code
SizeFilter filter = new SizeFilter(); filter.MaxSize = 10240; filter.MinSize = 5120;  AbstractFile[] files = myFolder.GetFiles( true, "*.txt", filter );