Get information from a higher class?
- by Clint Davis
I don't know really how to word the question so please bear with me...
I have 3 classes: Server, Database, and Table. Each class has a "Name" property. How I want it to work is that each server can have multiple databases and each database can have multiple tables. So in the Server class I have this property.
Private _databases As List(Of Database)
Public Property Databases() As List(Of Database)
Get
Return _databases
End Get
Set(ByVal value As List(Of Database))
_databases = value
End Set
End Property
And I have something similar in the Database class for the tables. This works fine now because I can do something like this to get all the databases in the server.
For Each db In s.Databases 's being the server object
Debug.Print(db.Name)
Next
I would like to expand these classes. I want the server class to handle all the connection information and I would like the other classes to use the server class's connection information in them.
For example, I setup a server class and set the connection string to the server. Then I want the database class to use serverclass.connectionstring property to connect to the server and get a list of all the databases. But I want to keep that code in the database class. How can I do this?
I've attached some code of what I want to do.
Public Class Server
Private _name As String
Public Property Name() As String
Get
Return _name
End Get
Set(ByVal value As String)
_name = value
End Set
End Property
Private _databases As List(Of Database)
Public Property Databases() As List(Of Database)
Get
Return _databases
End Get
Set(ByVal value As List(Of Database))
_databases = value
End Set
End Property
End Class
'-----New class
Public Class Database
Private _name As String
Public Property Name() As String
Get
Return _name
End Get
Set(ByVal value As String)
_name = value
End Set
End Property
Private _tables As List(Of Table)
Public Property Tables() As List(Of Table)
Get
Return _tables
End Get
Set(ByVal value As List(Of Table))
_tables = value
End Set
End Property
'This is where I need help!
Private Sub LoadTables ()
dim connectionstring as string = server.connectionstring 'Possible?
'Do database stuff
End Class
Thanks for reading!
