Default Value in RadListView

[Jon]

Hi Guys,

I need to generate a default value for a BinaryImage (in a RadListView) when the image source from the database is NULL.

This is the BinaryImage code in RadListView

<asp:PlaceHolder ID="badgeContainer" runat="server"></asp:PlaceHolder>
                </LayoutTemplate>
                <ItemTemplate>

                     <asp:LinkButton ID="lb1" runat="server" CommandName="content" CommandArgument='<%#Eval("bid") %>'>
                    <telerik:RadBinaryImage ID="rbImageBadge"  runat="server" DataValue='<%# IIf(Eval("badge") IsNot DBNull.Value, Eval("badge"), New System.Byte(-1) {})%>'
                                AutoAdjustImageControlSize="false" Width="120px" Height="120px" ToolTip='<%#Eval("badgetitle", "{0}") %>'
                                AlternateText='<%#Eval("badgetitle", "{0}") %>'    />
                 </asp:LinkButton>

''''''''''''''''''''''' etc

 

I have tried everything that I have read but just cannot get it to show a default image.
All help appreciated!

My Handler is 

Imports System.Data.SqlClient

Public Class badgeImage : Implements IHttpHandler

    Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest

        Dim conn As SqlConnection = Nothing
        conn = New SqlConnection(ConfigurationManager.ConnectionStrings("jbdata").ConnectionString)

        context.Response.ContentType = "image/png"

        Dim id As Integer = Convert.ToInt32(context.Request.QueryString("ID"))

        Dim cmdText As String = "select badge from badges where bid=" & id

        Dim command As New SqlCommand(cmdText, conn)
        conn.Open()

        Dim reader As SqlDataReader = command.ExecuteReader()

        reader.Read()

        If id > 0 Then
            Dim image As Byte() = DirectCast(reader(0), Byte())
            context.Response.BinaryWrite(image)
        Else
            Dim location As String = System.Web.HttpContext.Current.Server.MapPath("~/badgz/images/default.png")
            System.Web.HttpContext.Current.Response.WriteFile(location)
        End If

        reader.Close()
        conn.Close()

    End Sub

    Public ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
        Get
            Return False
        End Get
    End Property

End Class

[Jon]

Got it.... for anyone else...I needed to put the logic in the itemDataBound event

J

Dim oDataItem As RadListViewDataItem = CType(e.Item, RadListViewDataItem)
If Not oDataItem.DataItem("badge") Is DBNull.Value Then
               _rbImageBadge.DataValue = CType(DataBinder.Eval(CType(e.Item, RadListViewDataItem).DataItem, "badge"), Byte())
           Else
               _rbImageBadge.DataValue = Nothing
               _rbImageBadge.ImageUrl = "~/badgz/images/default120.png"
           End If