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Repeater.ItemDataBound Event

Occurs after an item in the Repeater is data-bound but before it is rendered on the page.

[Visual Basic]
Public Event ItemDataBound As RepeaterItemEventHandler
[C#]
public event RepeaterItemEventHandler ItemDataBound;
[C++]
public: __event RepeaterItemEventHandler* ItemDataBound;

[JScript] In JScript, you can handle the events defined by a class, but you cannot define your own.

Event Data

The event handler receives an argument of type RepeaterItemEventArgs containing data related to this event. The following RepeaterItemEventArgs property provides information specific to this event.

Property Description
Item Gets the RepeaterItem associated with the event.

Remarks

This event is raised when an item in the Repeater is data-bound.

For more information about handling events, see Consuming Events.

Example

[Visual Basic, C#] The following example demonstrates how to specify and code a handler for the ItemDataBound event of the Repeater. The data is modified after it is bound to an item in the Repeater but before it is rendered on the page.

[Visual Basic] 
<%@ Page Language="VB" AutoEventWireup="True" %>
<html>
 <head>
    <script language="VB" runat="server">

    Sub Page_Load(Sender As Object, e As EventArgs)
        
        If Not IsPostBack Then
            Dim values As New ArrayList()
            
            values.Add(New Evaluation("Razor Wiper Blades", "Good"))
            values.Add(New Evaluation("Shoe-So-Soft Softening Polish", "Poor"))
            values.Add(New Evaluation("DynaSmile Dental Fixative", "Fair"))
            
            Repeater1.DataSource = values
            Repeater1.DataBind()
        End If
    End Sub

    Sub R1_ItemDataBound(Sender As Object, e As RepeaterItemEventArgs)
        
        ' This event is raised for the header, the footer, separators, and items.

        ' Execute the following logic for Items and Alternating Items.
        If (e.Item.ItemType = ListItemType.Item) Or _
            (e.Item.ItemType = ListItemType.AlternatingItem) Then
            
            If CType(e.Item.DataItem, Evaluation).Rating = "Good" Then
                CType(e.Item.FindControl("RatingLabel"), Label).Text = _
                    "<b>***Good***</b>"
            End If
        End If
    End Sub

    Public Class Evaluation
        
        Private myProductid As String
        Private myRating As String        
        
        Public Sub New(newProductid As String, newRating As String)
            Me.myProductid = newProductid
            Me.myRating = newRating
        End Sub        
        
        Public ReadOnly Property ProductID() As String
            Get
                Return myProductid
            End Get
        End Property        
        
        Public ReadOnly Property Rating() As String
            Get
                Return myRating
            End Get
        End Property
    End Class
 
    </script>
 
 </head>
 <body>
 
    <h3>OnItemDataBound Example</h3>
 
    <form runat=server>
 
       <p>
       <asp:Repeater id=Repeater1 OnItemDataBound="R1_ItemDataBound" runat="server">
          <HeaderTemplate>
             <table border=1>
                <tr>
                   <td><b>Product</b></td>
                   <td><b>Consumer Rating</b></td>
                </tr>
          </HeaderTemplate>
             
          <ItemTemplate>
             <tr>
                <td> <asp:Label Text='<%# DataBinder.Eval(Container.DataItem, "ProductID") %>' Runat="server"/> </td>
                <td> <asp:Label id=RatingLabel Text='<%# DataBinder.Eval(Container.DataItem, "Rating") %>' Runat="server"/> </td>
             </tr>
          </ItemTemplate>
             
          <FooterTemplate>
             </table>
          </FooterTemplate>
             
       </asp:Repeater>
       <p>
 
    </form>
 </body>
 </html>
    

[C#] 
<%@ Page Language="C#" AutoEventWireup="True" %>
<html>
 <head>
    <script language="C#" runat="server">
       void Page_Load(Object Sender, EventArgs e) {
 
          if (!IsPostBack) {
             ArrayList values = new ArrayList();
 
             values.Add(new Evaluation("Razor Wiper Blades", "Good"));
             values.Add(new Evaluation("Shoe-So-Soft Softening Polish", "Poor"));
             values.Add(new Evaluation("DynaSmile Dental Fixative", "Fair"));
 
             Repeater1.DataSource = values;
             Repeater1.DataBind();
          }
       }
 
       void R1_ItemDataBound(Object Sender, RepeaterItemEventArgs e) {
                              
          // This event is raised for the header, the footer, separators, and items.

          // Execute the following logic for Items and Alternating Items.
          if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) {
                 
             if (((Evaluation)e.Item.DataItem).Rating == "Good") {
                ((Label)e.Item.FindControl("RatingLabel")).Text= "<b>***Good***</b>";
             }
          }
       }    
 
       public class Evaluation {
         
          private string productid;
          private string rating;
 
          public Evaluation(string productid, string rating) {
             this.productid = productid;
             this.rating = rating;
          }
 
          public string ProductID {
             get {
                return productid;
             }
          }
 
          public string Rating {
             get {
                return rating;
             }
          }
       }
 
    </script>
 
 </head>
 <body>
 
    <h3>OnItemDataBound Example</h3>
 
    <form runat=server>
 
       <p>
       <asp:Repeater id=Repeater1 OnItemDataBound="R1_ItemDataBound" runat="server">
          <HeaderTemplate>
             <table border=1>
                <tr>
                   <td><b>Product</b></td>
                   <td><b>Consumer Rating</b></td>
                </tr>
          </HeaderTemplate>
             
          <ItemTemplate>
             <tr>
                <td> <asp:Label Text='<%# DataBinder.Eval(Container.DataItem, "ProductID") %>' Runat="server"/> </td>
                <td> <asp:Label id=RatingLabel Text='<%# DataBinder.Eval(Container.DataItem, "Rating") %>' Runat="server"/> </td>
             </tr>
          </ItemTemplate>
             
          <FooterTemplate>
             </table>
          </FooterTemplate>
             
       </asp:Repeater>
       <p>
 
    </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

Repeater Class | Repeater Members | System.Web.UI.WebControls Namespace | OnItemDataBound | RepeaterItemEventArgs | RepeaterItemEventHandler

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