vb.net怎么从数据集保存到数据库

vb.net如何从数据集保存到数据库
vb是用rs.fields()

[解决办法]
给个例子：

VB.NET code

Public Function CreateCmdsAndUpdate(ByVal dataSet As DataSet, _ByVal connectionString As String, ByVal queryString As String) As DataSet    Using connection As New OleDbConnection(connectionString)        Dim adapter As New OleDbDataAdapter()        adapter.SelectCommand = New OleDbCommand(queryString, connection)        Dim builder As OleDbCommandBuilder = New OleDbCommandBuilder(adapter)        connection.Open()        Dim customers As DataSet = New DataSet        adapter.Fill(customers)        ' Code to modify data in DataSet here         adapter.Update(customers)        Return customers    End UsingEnd Function
[解决办法]
探讨

能具体的来个例子么？谢谢大侠