本文整理汇总了VB.NET中System.Data.OleDb.OleDbCommand类的典型用法代码示例。如果您正苦于以下问题：VB.NET OleDbCommand类的具体用法？VB.NET OleDbCommand怎么用？VB.NET OleDbCommand使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了OleDbCommand类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: ReadMyData
Public Sub ReadMyData(ByVal connectionString As String)
Dim queryString As String = "SELECT OrderID, CustomerID FROM Orders"
Using connection As New OleDbConnection(connectionString)
Dim command As New OleDbCommand(queryString, connection)
connection.Open()
Dim reader As OleDbDataReader = command.ExecuteReader()
While reader.Read()
Console.WriteLine(reader.GetInt32(0).ToString() + ", " _
+ reader.GetString(1))
End While
' always call Close when done reading.
reader.Close()
End Using
End Sub示例2: New OleDbCommand
' 导入命名空间
Imports System
Imports System.Data
Imports System.Data.OleDb
Module OleDbProvider
Sub Main()
' Set up connection string
Dim ConnString As String = "provider=sqloledb;" & _
"data source=(local)\SQLEXPRESS;" & _
"integrated security=sspi;" & _
"database=MyDatabase"
' Set up query string
Dim CmdString As String = "SELECT * FROM Employee"
'Declare Connection and DataReader variables
Dim Conn As OleDbConnection
Dim Reader As OleDbDataReader
Try
'Open Connection
Conn = New OleDbConnection(ConnString)
Conn.Open()
'Execute Query
Dim Cmd As New OleDbCommand(CmdString, Conn)
Reader = Cmd.ExecuteReader()
'Display output header
Console.WriteLine("Demonstrates the use " & _
"of the OleDb Data Provider." & ControlChars.NewLine)
Console.WriteLine("Querying database {0} with query {1}" & _
ControlChars.NewLine, Conn.Database, Cmd.CommandText)
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