VB.NET OleDbConnection类代码示例

Public Sub InsertRow(ByVal connectionString As String, _
    ByVal insertSQL As String)

    Using connection As New OleDbConnection(connectionString)
        ' The insertSQL string contains a SQL statement that
        ' inserts a new row in the source table.
        Dim command As New OleDbCommand(insertSQL)

        ' Set the Connection to the new OleDbConnection.
        command.Connection = connection

        ' Open the connection and execute the insert command.
        Try
            connection.Open()
            command.ExecuteNonQuery()
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
        ' The connection is automatically closed when the
        ' code exits the Using block.
    End Using
End Sub

' 导入命名空间
Imports System
Imports System.Xml
Imports System.Xml.Schema
Imports System.IO
Imports System.Data.OleDb
Imports System.Collections
Imports System.Data


Public Class MainClass
    
    Shared Sub Main()
        Try
            ' Define a connection object
            Dim dbConn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Password=;User ID=Admin;Data Source=Employee.mdb")

            ' Create a data adapter to retrieve records from db
            Dim strSELECT As String = "SELECT ID AS EmployeeID, FirstName AS FirstName, LastName AS LastName FROM Employee"
            Dim daUsers As New OleDbDataAdapter(strSELECT, dbConn)
            Dim dsUsers As New DataSet("Employee")

            ' Fill the dataset
            daUsers.Fill(dsUsers)

            ' Go through the records and print them using the mapped names
            Dim r As DataRow
            For Each r In dsUsers.Tables(0).Rows
                Console.WriteLine("ID: {0}, FirstName: {1}, LastName: {2}", r("EmployeeID"), r("FirstName"), r("LastName"))
            Next
        Catch ex As Exception

            ' An error occurred. Show the error message
            Console.WriteLine(ex.Message)
        End Try
    End Sub
End Class