ASP.Net/ADO.net Database/Delete OleDnConnection

Материал из .Net Framework эксперт
Перейти к: навигация, поиск

Delete data from Access through OleDbConnection

   <source lang="csharp">

<%@ Page Language=VB Debug=true %> <%@ Import Namespace="System.Data" %> <%@ Import Namespace="System.Data.OLEDB" %> <script runat=server> Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs) 

   If Not IsPostBack Then
       Dim DBConn as OleDbConnection
       Dim DBCommand As OleDbDataAdapter
       Dim DSPageData as New DataSet
       DBConn = New OleDbConnection( _
           "PROVIDER=Microsoft.Jet.OLEDB.4.0;" _
           & "DATA SOURCE=" _
           & Server.MapPath("EmployeeDatabase.mdb;"))
       DBCommand = New OleDbDataAdapter _
           ("Select LastName & ", " & FirstName " _
           & "as EmpName, ID " _
           & "From Employee " _
           & "Order By LastName, FirstName", DBConn)
       DBCommand.Fill(DSPageData, _
           "Employee")
       ddlEmps.DataSource = _
           DSPageData.Tables("Employee").DefaultView
       ddlEmps.DataBind()
   End If

End Sub Sub SubmitBtn_Click(Sender As Object, E As EventArgs) 

   Dim DBConn as OleDbConnection
   Dim DBDelete As New OleDbCommand
   DBConn = New OleDbConnection( _
       "PROVIDER=Microsoft.Jet.OLEDB.4.0;" _
       & "DATA SOURCE=" _
       & Server.MapPath("EmployeeDatabase.mdb;"))
   DBDelete.rumandText = "Delete From Employee " _
       & "Where ID = " & ddlEmps.SelectedItem.Value
   DBDelete.Connection = DBConn
   DBDelete.Connection.Open
   DBDelete.ExecuteNonQuery()

End Sub </SCRIPT> <HTML> <HEAD> <TITLE>Deleting Access Data</TITLE> </HEAD> <Body LEFTMARGIN="40"> <form runat="server"> Select the Employee to Delete

<asp:dropdownlist 

   id="ddlEmps"
   datatextfield="EmpName" 
   datavaluefield="ID"
   runat="server"

/>

<asp:button 

   id="butDelete"
   text="Delete"
   onclick="SubmitBtn_Click" 
   runat="server"

/> </form> </BODY> </HTML> 

      </source>

<A href="http://www.nfex.ru/Code/ASPDownload/EmployeeDatabase.zip">EmployeeDatabase.zip( 10 k)</a>

Источник — «http://nfex.ru/index.php?title=ASP.Net/ADO.net_Database/Delete_OleDnConnection&oldid=1625»