This regular expression is applied to the file name to determine if it matches, when the file is about to be opened. It provides more control than the wildcard name that is used in the open dialog. If this property is null, the FileDialogWildcardExpression is used instead.

public Regex Expression { get; set; }

Public Property Expression As Regex
	Get
	Set

public:
property Regex^ Expression {
	Regex^ get ();
	void set (Regex^ value);
}

member Expression : Regex with get, set