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VB.NET OleDbDataAdapter類代碼示例

本文整理匯總了VB.NET中System.Data.OleDb.OleDbDataAdapter的典型用法代碼示例。如果您正苦於以下問題:VB.NET OleDbDataAdapter類的具體用法?VB.NET OleDbDataAdapter怎麽用?VB.NET OleDbDataAdapter使用的例子?那麽, 這裏精選的類代碼示例或許可以為您提供幫助。


在下文中一共展示了OleDbDataAdapter類的2個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的VB.NET代碼示例。

示例1: CreateDataAdapter

Public Function CreateDataAdapter(ByVal selectCommand As String, _
    ByVal connection As OleDbConnection) As OleDbDataAdapter

    Dim adapter As OleDbDataAdapter = _
        New OleDbDataAdapter(selectCommand, connection)

    adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey

    ' Create the commands.
    adapter.InsertCommand = New OleDbCommand( _
        "INSERT INTO Customers (CustomerID, CompanyName) " & _
         "VALUES (?, ?)")

    adapter.UpdateCommand = New OleDbCommand( _
        "UPDATE Customers SET CustomerID = ?, CompanyName = ? " & _
        "WHERE CustomerID = ?")

    adapter.DeleteCommand = New OleDbCommand( _
        "DELETE FROM Customers WHERE CustomerID = ?")

    ' Create the parameters.
    adapter.InsertCommand.Parameters.Add( _
        "@CustomerID", OleDbType.Char, 5, "CustomerID")
    adapter.InsertCommand.Parameters.Add( _
        "@CompanyName", OleDbType.VarChar, 40, "CompanyName")

    adapter.UpdateCommand.Parameters.Add( _
        "@CustomerID", OleDbType.Char, 5, "CustomerID")
    adapter.UpdateCommand.Parameters.Add( _
        "@CompanyName", OleDbType.VarChar, 40, "CompanyName")
    adapter.UpdateCommand.Parameters.Add( _
        "@oldCustomerID", OleDbType.Char, 5, "CustomerID").SourceVersion = _
        DataRowVersion.Original

    adapter.DeleteCommand.Parameters.Add( _
        "@CustomerID", OleDbType.Char, 5, "CustomerID").SourceVersion = _
        DataRowVersion.Original

    Return adapter
End Function
開發者ID:VB.NET開發者,項目名稱:System.Data.OleDb,代碼行數:40,代碼來源:OleDbDataAdapter

示例2: New OleDbDataAdapter

' 導入命名空間
Imports System
Imports System.Xml
Imports System.Xml.Schema
Imports System.IO
Imports System.Data.OleDb
Imports System.Data.Common
Imports System.Data


Public Class MainClass
    
    Shared Sub Main()
        Dim dsUsers As New DataSet("Users")

        Try
            Dim dbConn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Password=;User ID=Admin;Data Source=Employee.mdb")
            Dim daUsers As New OleDbDataAdapter("SELECT ID, FirstName, LastName FROM Employee", dbConn)
            Dim dcmUserID As New DataColumnMapping("ID", "EmployeeID")
            Dim dcmFirstName As New DataColumnMapping("FirstName", "FirstName")
            Dim dcmLastName As New DataColumnMapping("LastName", "LastName")
            Dim dtmUsers As New DataTableMapping("Table", "Employee")
            dtmUsers.ColumnMappings.Add(dcmUserID)
            dtmUsers.ColumnMappings.Add(dcmFirstName)
            dtmUsers.ColumnMappings.Add(dcmLastName)

            daUsers.TableMappings.Add(dtmUsers)
            daUsers.Fill(dsUsers)

            Dim cb As New OleDbCommandBuilder(daUsers)

            Dim r As DataRow = dsUsers.Tables(0).NewRow()
            r("FirstName") = "Eddie"
            r("LastName") = "Robinson"
            dsUsers.Tables(0).Rows.Add(r)

            daUsers.Update(dsUsers.GetChanges())

            dsUsers.AcceptChanges()
        Catch ex As Exception
            dsUsers.RejectChanges()
            Console.WriteLine(ex.Message)
        End Try
    End Sub
End Class
開發者ID:VB程序員,項目名稱:System.Data.OleDb,代碼行數:45,代碼來源:OleDbDataAdapter


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