The password required to open the PDF document. If the OwnerPassword property is an empty string and the UserPassword is not empty, the OwnerPassword will be automatically assigned with the value from UserPassword and when the PDF document is opened in the viewer using the user password (which is also the owner password) all the operations like printing, copying, etc will be allowed.

public string UserPassword { get; set; }

Public Property UserPassword As String
	Get
	Set

public:
property String^ UserPassword {
	String^ get ();
	void set (String^ value);
}