Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports System.Collections
Imports System.Windows.Forms
Imports System.Resources
Public Class MainClass
Shared Dim OleDbConnection As System.Data.OleDb.OleDbConnection
Shared Dim AddressBookDataAdapter As System.Data.OleDb.OleDbDataAdapter
Shared Sub Main()
Connect()
Display()
Dim FirstName As String = "New Name"
Dim ID As String = "1"
Dim OleDbUpdateCommand As System.Data.OleDb.OleDbCommand
OleDbUpdateCommand = new System.Data.OleDb.OleDbCommand
OleDbUpdateCommand.CommandText = "UPDATE Employee SET firstName=" & _
"'" & FirstName & "' WHERE id=" & ID & " ; "
OleDbUpdateCommand.Connection = OleDbConnection
AddressBookDataAdapter.UpdateCommand = OleDbUpdateCommand
AddressBookDataAdapter.UpdateCommand.ExecuteNonQuery()
Display()
Disconnect()
End Sub
Shared Sub Display()
Dim OleDbSelectCommand As System.Data.OleDb.OleDbCommand
OleDbSelectCommand = New System.Data.OleDb.OleDbCommand()
OleDbSelectCommand.CommandText = "SELECT ID, FirstName, LastName,Salary FROM Employee"
OleDbSelectCommand.Connection = OleDbConnection
AddressBookDataAdapter = New System.Data.OleDb.OleDbDataAdapter()
AddressBookDataAdapter.SelectCommand = OleDbSelectCommand
Dim AddressBookDataSet As System.Data.DataSet
AddressBookDataSet = New System.Data.DataSet()
CType(AddressBookDataSet, System.ComponentModel.ISupportInitialize).BeginInit()
AddressBookDataAdapter.Fill(AddressBookDataSet)
Dim dataTable As DataTable = AddressBookDataSet.Tables(0)
' ensure dataTable not empty
If dataTable.Rows.Count <> 0 Then
Dim recordNumber As Integer = Convert.ToInt32(dataTable.Rows(0)(0))
Console.Write( recordNumber.ToString & " ")
Console.Write( Convert.ToString(dataTable.Rows(0)(1)) & " ")
Console.Write( Convert.ToString(dataTable.Rows(0)(2)) & " ")
Console.Write( Convert.ToString(dataTable.Rows(0)(3)) & " ")
' display not-found message
Else
Console.WriteLine( "No record found" )
End If
Console.WriteLine( )
End Sub
Shared Sub Connect()
OleDbConnection = New System.Data.OleDb.OleDbConnection()
OleDbConnection.ConnectionString = _
"Provider=Microsoft.Jet.OLEDB.4.0;Password="""";" & _
"User ID=Admin;Data Source=Employee.mdb;Mode=Sha" & _
"re Deny None;Extended Properties="""";" & _
"Jet OLEDB:System database="""";Jet OLEDB:Regis" & _
"try Path="""";Jet OLEDB:Database Password="""";" & _
"Jet OLEDB:Engine Type=5;Jet OLEDB:Dat" & _
"abase Locking Mode=1;Jet OLEDB:Global Partial " & _
"Bulk Ops=2;Jet OLEDB:Global Bulk T" & _
"ransactions=1;Jet OLEDB:New Database " & _
"Password="""";Jet OLEDB:Create System Databas" & _
"e=False;Jet OLEDB:Encrypt Database=False;" & _
"Jet OLEDB:Don't Copy Locale on Compact=" & _
"False;Jet OLEDB:Compact Without Replica " & _
"Repair=False;Jet OLEDB:SFP=False"
Try
OleDbConnection.Open()
Catch ex As Exception
Console.WriteLine(ex.Message)
End Try
End Sub
Shared Sub Disconnect()
Try
OleDbConnection.Close()
Catch ex As Exception
Console.WriteLine(ex.Message)
End Try
End Sub
End Class
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