ASP.Net/Components/Phone Book

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Phone Book Demo (VB.net)

<%--
Code revised from 
ASP.NET Tips & Techniques (Paperback)
by Greg Buczek 

# Publisher: McGraw-Hill/Osborne Media; 1st edition (May 21, 2002)
# Language: English
# ISBN: 0072225149
--%>   
<%@ 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 _
            ("PhoneDir.mdb;"))
        DBCommand = New OleDbDataAdapter _
            ("Select EmpName as [Employee Name], " _
            & "Department, PhoneNumber as " _
            & "[Phone Number] From Emps " _
            & "Order By EmpName", DBConn)
        DBCommand.Fill(DSPageData, _
            "Employees")
        dgEmps.DataSource = _
            DSPageData.Tables("Employees").DefaultView
        dgEmps.DataBind()
        DBCommand = New OleDbDataAdapter _
            ("Select Distinct Department From Emps " _
            & "Order By Department", DBConn)
        DBCommand.Fill(DSPageData, _
            "Departments")
        ddlDepartments.DataSource = _
            DSPageData.Tables("Departments").DefaultView
        ddlDepartments.DataBind()
    End If
End Sub
Sub ddl1_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 _
        ("PhoneDir.mdb;"))
    DBCommand = New OleDbDataAdapter _
        ("Select EmpName as [Employee Name], " _
        & "Department, PhoneNumber as " _
        & "[Phone Number] From Emps " _
        & "Where Department = "" _
        & ddlDepartments.SelectedItem.Text _
        & "" Order By EmpName", DBConn)
    DBCommand.Fill(DSPageData, _
        "Employees")
    dgEmps.DataSource = _
        DSPageData.Tables("Employees").DefaultView
    dgEmps.DataBind()
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Phone Directory</TITLE>
</HEAD>
<Body LEFTMARGIN="40">
<form runat="server">
<BR><BR>
<asp:label 
    id="lblMessage1" 
    font-size="12pt"
    font-bold="True"
    font-name="Lucida Console"
    text="Phone Number List"
    runat="server"
/>
<BR><BR>
<asp:datagrid
    id="dgEmps" 
    runat="server" 
    autogeneratecolumns="True"
/>
<BR><BR>
<asp:label 
    id="lblMessage2" 
    font-size="10pt"
    font-name="Lucida Console"
    text="Filter by Department"
    runat="server"
/>
<BR>
<asp:dropdownlist
    id="ddlDepartments"
    datatextfield="Department" 
    autopostback="True"
    onselectedindexchanged="ddl1_Changed"
    runat="server"
/>
</form>
</BODY>
</HTML>


<A href="http://www.nfex.ru/Code/ASPDownload/PhoneDir.zip">PhoneDir.zip( 7 k)</a>

Источник — «http://nfex.ru/index.php?title=ASP.Net/Components/Phone_Book&oldid=1959»