ASP.Net/ADO.net Database/Delete OleDnConnection — различия между версиями

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Текущая версия на 11:50, 26 мая 2010

Delete data from Access through OleDbConnection

<%@ 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
<BR><BR>
<asp:dropdownlist
    id="ddlEmps"
    datatextfield="EmpName" 
    datavaluefield="ID"
    runat="server"
/>
<BR><BR>
<asp:button 
    id="butDelete"
    text="Delete"
    onclick="SubmitBtn_Click" 
    runat="server"
/>  
</form>
</BODY>
</HTML>


<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»