VB.Net by API/System.Data.Odbc/OdbcConnection — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
Admin (обсуждение | вклад) м (1 версия) |
(нет различий)
|
Текущая версия на 12:50, 26 мая 2010
New OdbcConnection
Imports System
Imports System.Data
Imports System.Data.Odbc
Module OdbcProvider
Sub Main()
" Set up connection string
Dim ConnString As String = "dsn=NorthwindOdbc"
" Set up query string
Dim CmdString As String = "SELECT * FROM employees"
"Declare Connection and DataReader variables
Dim Conn As OdbcConnection
Dim Reader As OdbcDataReader
Try
"Open Connection
Conn = New OdbcConnection(ConnString)
Conn.Open()
"Execute Query
Dim Cmd As New OdbcCommand(CmdString, Conn)
Reader = Cmd.ExecuteReader()
"Display output header
Console.WriteLine("Querying database {0} with query {1}" & _
ControlChars.NewLine, Conn.Database, Cmd.rumandText)
Console.WriteLine("FirstName" & ControlChars.Tab & "LastName")
"Process The Result Set
While (Reader.Read())
Console.WriteLine(Reader("FirstName").PadLeft(9) & _
ControlChars.Tab & Reader(1))
End While
Catch ex As Exception
Console.WriteLine("Error: {0}", ex)
Finally
"Close Connection
Reader.Close()
Conn.Close()
End Try
End Sub
End Module