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DataList.Items Property

Gets a collection of DataListItem objects representing the individual items within the control.

[Visual Basic]
Public Overridable ReadOnly Property Items As _
   DataListItemCollection
[C#]
public virtual DataListItemCollection Items {get;}
[C++]
public: __property virtual DataListItemCollection* get_Items();
[JScript]
public function get Items() : DataListItemCollection;

Property Value

A DataListItemCollection that contains a collection of DataListItem objects representing the individual items within the DataList control.

Remarks

Use the Items collection to programmatically control the items in the DataList control. The Items collection does not provide any methods to add or remove items to the collection. However, you can control the contents of an item by providing a handler for the ItemCreated event.

Note   Only items bound to the data source are contained in the Items collection. The header, footer, and separator are not included in the collection.

Example

[Visual Basic, C#] The following example demonstrates how to use the Items collection to display the items in the DataList control.

[Visual Basic, C#] Note   The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. This code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see Web Forms Code Model.
[Visual Basic] 
<%@ Page Language="VB" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
<html>
   <script language = "VB" runat="server">
    Function CreateDataSource() As ICollection
        Dim dt As New DataTable()
        Dim dr As DataRow
        
        dt.Columns.Add(New DataColumn("StringValue", GetType(String)))
        
        Dim i As Integer
        For i = 0 To 9
            dr = dt.NewRow()
            dr(0) = "Item " & i.ToString()
            dt.Rows.Add(dr)
        Next i
        
        Dim dv As New DataView(dt)
        Return dv
    End Function 'CreateDataSource


    Sub Page_Load(sender As Object, e As EventArgs)
        If Not IsPostBack Then
            DataList1.DataSource = CreateDataSource()
            DataList1.DataBind()
        End If
    End Sub 'Page_Load


    Sub Button_Click(sender As Object, e As EventArgs)
        If DataList1.Items.Count > 0 Then
            Label1.Text = "The Items collection contains: <br>"
            
            Dim item As DataListItem
            For Each item In  DataList1.Items
                
                Label1.Text += CType(item.Controls(1), DataBoundLiteralControl).Text & "<br>"
            Next item
        End If
    End Sub 'Button_Click
   </script>
 
<body>
 
   <form runat=server>

      <h3>DataList Items Example</h3>
 
      <asp:DataList id="DataList1" runat="server"
           BorderColor="black"
           CellPadding="3"
           Font-Name="Verdana"
           Font-Size="8pt">

         <HeaderStyle BackColor="#aaaadd">
         </HeaderStyle>

         <AlternatingItemStyle BackColor="Gainsboro">
         </AlternatingItemStyle>

         <HeaderTemplate>

            Items

         </HeaderTemplate>
               
         <ItemTemplate>

            <%# DataBinder.Eval(Container.DataItem, "StringValue") %>

         </ItemTemplate>
 
      </asp:DataList>

        <br><br>

      <asp:Button id="Button1"
           Text="Display Contents of Items Collection"
           OnClick="Button_Click"
           runat="server"/>
 
      <br><br>

      <asp:Label id="Label1"
           runat="server"/>
 
   </form>
 
</body>
</html>
   

[C#] 
<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
<html>
   <script language = "C#" runat="server">
 
      ICollection CreateDataSource() 
      {
         DataTable dt = new DataTable();
         DataRow dr;
 
         dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
  
         for (int i = 0; i < 10; i++) 
         {
            dr = dt.NewRow();
            dr[0] = "Item " + i.ToString();
            dt.Rows.Add(dr);
         }
 
         DataView dv = new DataView(dt);
         return dv;
      }
 
      void Page_Load(Object sender, EventArgs e) 
      {
         if (!IsPostBack) 
         {
            DataList1.DataSource = CreateDataSource();
            DataList1.DataBind();
         }
      }
 
      void Button_Click(Object sender, EventArgs e)
      { 
         if (DataList1.Items.Count > 0)
         {
            Label1.Text = "The Items collection contains: <br>";

            foreach(DataListItem item in DataList1.Items)
            {
        
               Label1.Text += ((DataBoundLiteralControl)item.Controls[1]).Text +
                              "<br>";
            }
         }
      } 
 
   </script>
 
<body>
 
   <form runat=server>

      <h3>DataList Items Example</h3>
 
      <asp:DataList id="DataList1" runat="server"
           BorderColor="black"
           CellPadding="3"
           Font-Name="Verdana"
           Font-Size="8pt">

         <HeaderStyle BackColor="#aaaadd">
         </HeaderStyle>

         <AlternatingItemStyle BackColor="Gainsboro">
         </AlternatingItemStyle>

         <HeaderTemplate>

            Items

         </HeaderTemplate>
               
         <ItemTemplate>

            <%# DataBinder.Eval(Container.DataItem, "StringValue") %>

         </ItemTemplate>
 
      </asp:DataList>

        <br><br>

      <asp:Button id="Button1"
           Text="Display Contents of Items Collection"
           OnClick="Button_Click"
           runat="server"/>
 
      <br><br>

      <asp:Label id="Label1"
           runat="server"/>
 
   </form>
 
</body>
</html>
   

[C++, JScript] No example is available for C++ or JScript. To view a Visual Basic or C# example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 2000, Windows XP Professional, Windows Server 2003 family

See Also

DataList Class | DataList Members | System.Web.UI.WebControls Namespace | DataListItem | ItemCreated | OnItemCreated

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