Cell. +39 335 70 310 78
mail gianluca.pezzoli@gianlucapezzoli.eu
Products \ Miranda
How to use Miranda inside the code?
Firstly you must create a DataLink
(the connection to the DBMS) specifying the connection string.
Dim SqlServer As New
Pezzoli.Data.Miranda.SqlServerClient.SqlServerDataLink(ConnectionString)
Then instantiate the class (entity) that is the single record of the table.
Dim Val As New RigaOrdine
The code that defines this class / entity (RigaOrdine)
is obtained from MyGeneration (see below).
Now we have to instantiate the class manager Val (Proxy).
The line below is used to tell the Proxy that will send commands to the SQL server
with the name defined over SqlServer.
Dim Proxy As New
Pezzoli.Data.Miranda.Proxy()
Proxy.DataLink = SqlServer
Finally we have to tell the Proxy who are required to manage
(load, track and changes and save, delete) data in Val, the instance of the RigaOrdine type defined
above
Proxy.Entity = Val
Now we are ready to make ...
Select
Proxy.Load("IDOrdine = 99 And
Descrizione='X""X'X'")
oppure
Dim Key As New
Pezzoli.Data.Miranda.EntityKey()
Key.Add(New Pezzoli.Data.Miranda.EntityKeyItem("IDOrdine", 99))
Key.Add(New Pezzoli.Data.Miranda.EntityKeyItem("Descrizione",
"'X""X'X'"))
Proxy.Load(Key)
Insert
Val.IDOrdine = 44
Val.Descrizione = "Pippo"
Proxy.Insert()
Update
First I do a Load. Then
Val.Descrizione = "Pippo"
Proxy.Update()
Delete
First I do a Load.Then
Proxy.Delete()