BorrowerInformation
Delete( )
DeleteButton_Clicked()
Item
UpdateBorrowerFrame
Title
getBorrowerInformation(ObjId)
Loan
FindButton_Clicked()
getTitle（ ）
getLoan(ObjId)
Resveration
FindBorrowerDialog
Delete( )
getNoLoans( )
getNoResverations( )
RemoveResveration ( ObjId )
管理员
getLoan( int )
FindOnLastName(String)
getResverations( int )
geItem( )
