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 <asp:DataList ID="DataList1" runat="server" CaptionAlign="Top" 
            DataKeyField="Bild" DataSourceID="VorlesungsSource" BackColor="#DEBA84" 
            BorderColor="#DEBA84" BorderStyle="None" BorderWidth="1px" CellPadding="3" 
            CellSpacing="2" GridLines="Both" RepeatColumns="3" RepeatDirection="Horizontal">
            <FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
            <ItemStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
            <SelectedItemStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
            <HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
            <ItemTemplate>
                Bild:
                <asp:image ID="Bildimage" runat="server" imageurl='<%# ShowImage(Eval("Bild")) %>' Width="50" Height="50" />
                
                Titel:
                <asp:Label ID="TitelLabel" runat="server" Text='<%# Eval("Titel") %>' />
                
                Datum:
                <asp:Label ID="DatumLabel" runat="server" Text='<%# Eval("Datum") %>' />
                
                Bemerkung:
                <asp:Label ID="BemerkungLabel" runat="server" Text='<%# Eval("Bemerkung") %>' />
                
            </ItemTemplate>
        </asp:DataList>                    

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 public String ShowImage(object o)
    {
                
        return "http://localhost:50549/Kinderuni_v01/ShowImage.aspx?ShowImage=";
    }                    

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   protected void Page_Load(object sender, EventArgs e)
    {
        String value = this.Request.QueryString.Get("showImage");
        KUDBDataContext db = new KUDBDataContext();

        var fotos = (from f in db.Fotos
                     select f);

        byte[] buffer = null;

        foreach (Foto foto in fotos)
        {

            buffer = foto.Bild.ToArray();
           
        }

        Response.ContentType = "image/jpeg";
        Response.BinaryWrite(buffer);
    }