ASP.Net/Data Binding/ListBox

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Bind DataTable to asp:ListBox

   <source lang="csharp">

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

   If Not IsPostBack Then
       Dim MyDT As New DataTable
       Dim MyRow As DataRow
       MyDT.Columns.Add(New DataColumn("DepartmentID", _
           GetType(Int32)))
       MyDT.Columns.Add(New DataColumn("DepartmentName", _
           GetType(String)))
       MyRow = MyDT.NewRow()
       MyRow(0) = 1
       MyRow(1) = "Marketing"
       MyDT.Rows.Add(MyRow)
       MyRow = MyDT.NewRow()
       MyRow(0) = 2
       MyRow(1) = "Sales"
       MyDT.Rows.Add(MyRow)
       MyRow = MyDT.NewRow()
       MyRow(0) = 3
       MyRow(1) = "Support"
       MyDT.Rows.Add(MyRow)
       MyRow = MyDT.NewRow()
       MyRow(0) = 4
       MyRow(1) = "Customer Service"
       MyDT.Rows.Add(MyRow)
       lb2.DataSource = MyDT
       lb2.DataBind()
       lb2.Items(3).Selected=True
   End If

End Sub Sub lb1_Clicked(sender As Object, e As EventArgs) 

   Dim i As Integer
   lblMessage.Text = "Preferred office color(s):
"
   For i = 0 To lb1.Items.Count - 1
       If lb1.Items(i).Selected Then
           lblMessage.Text = lblMessage.Text _
               & lb1.Items(i).Text & "
"
       End If
   Next

End Sub Sub lb2_Clicked(sender As Object, e As EventArgs) 

   lblMessage2.Text = "ID of Department you work in: " _
       & lb2.SelectedItem.Value & "
"

End Sub </SCRIPT> <HTML> <HEAD> <TITLE>ListBox Control Sample Page</TITLE> </HEAD> <BODY > <form runat="server"> <asp:Label 

   id="lblMessage"
   runat="server"
   Font-Bold="True"
   Text="Preferred office color:"

/>
<asp:ListBox 

   id="lb1" 
   runat="server"
   AutoPostBack="True"
   OnSelectedIndexChanged="lb1_Clicked"
   Rows=4
   SelectionMode="Multiple"

> 

   <asp:ListItem>Blue</asp:ListItem>
   <asp:ListItem>Red</asp:ListItem>
   <asp:ListItem>Green</asp:ListItem>
   <asp:ListItem Selected>Purple</asp:ListItem>
   <asp:ListItem>Black</asp:ListItem>
   <asp:ListItem>Gold</asp:ListItem>

</asp:ListBox>

<asp:Label 

   id="lblMessage2"
   runat="server"
   Font-Bold="True"
   Text="ID of Department you work in:
"

/>
<asp:ListBox 

   id="lb2" 
   runat="server"
   AutoPostBack="True"
   Rows=3
   OnSelectedIndexChanged="lb2_Clicked"
   DataTextField="DepartmentName"
   DataValueField="DepartmentID"
   BackColor="LightYellow"
   ForeColor="DarkRed"

> </asp:ListBox> </Form> </BODY> </HTML> 

      </source>
Источник — «http://nfex.ru/index.php?title=ASP.Net/Data_Binding/ListBox&oldid=2064»