ASP.Net/Components/What is new

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

What is new form (VB.net)

<%@ 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 _
            ("WhatsNewDB.mdb;"))
        DBCommand = New OleDbDataAdapter _
            ("Select Top 1 TheNews From News " _
            & "Order By DateEntered Desc", DBConn)
        DBCommand.Fill(DSPageData, _
            "News")
        lblTheNews.Text = _
            DSPageData.Tables("News").Rows(0). _
            Item("TheNews")
        DBCommand = New OleDbDataAdapter _
            ("Select NewsID, DateEntered From News " _
            & "Order By DateEntered DESC", DBConn)
        DBCommand.Fill(DSPageData, _
            "NewsDates")
        ddlNews.DataSource = _
            DSPageData.Tables("NewsDates").DefaultView
        ddlNews.DataBind()
    End If
End Sub
Sub ddlNews_Changed(Sender As Object, E As EventArgs)
    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 _
        ("WhatsNewDB.mdb;"))
    DBCommand = New OleDbDataAdapter _
        ("Select TheNews From News " _
        & "Where NewsID = " & ddlNews.SelectedItem.Value _
        , DBConn)
    DBCommand.Fill(DSPageData, _
        "News")
    lblTheNews.Text = _
        DSPageData.Tables("News").Rows(0). _
        Item("TheNews")
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>What"s New</TITLE>
</HEAD>
<Body LEFTMARGIN="40">
<form runat="server">
<BR><BR>
<asp:label 
    id="lblTheNews" 
    font-size="12pt"
    font-bold="True"
    font-name="Lucida Console"
    runat="server"
/>
<BR><BR>
<asp:label 
    id="lblMessage2" 
    font-size="10pt"
    font-name="Lucida Console"
    text="View old News"
    runat="server"
/>
<BR>
<asp:dropdownlist
    id="ddlNews"
    datatextfield="DateEntered" 
    datavaluefield="NewsID"
    autopostback="True"
    onselectedindexchanged="ddlNews_Changed"
    runat="server"
/>
</form>
</BODY>
</HTML>


<A href="http://www.nfex.ru/Code/ASPDownload/WhatsNewDB.zip">WhatsNewDB.zip( 8 k)</a>

Источник — «http://nfex.ru/index.php?title=ASP.Net/Components/What_is_new&oldid=1957»