Image tag within a repeater ASP.NET C#

Question

I'm creating a repeater. This is shown below

<asp:Repeater runat="server" ID="repeaterEvent" OnItemCommand="repeaterEvent_ItemCommand">
                        <ItemTemplate>
                            <div class="jumbotron">
                                <h4><asp:Label ID="Label2" runat="server" Text='<%#Bind("EvtDescription") %>'></asp:Label></h4>   
                                <h4><asp:Label runat="server">Amount Attending: </asp:Label>       
                                <asp:Label ID="Label4" runat="server" Text='<%#Bind("EvtVote") %>'></asp:Label></h4>
                                <asp:Button runat="server" ID="eventButton" Text="Attending" class="btn btn-primary" CommandName="Vote"/>
                            </div>
                        </ItemTemplate>
                    </asp:Repeater>

I've also got an image with the code for it below:

<img runat="server" id="imageTest" src="imageIDtagName" />

Back end code:

imageTest.Src = "data:Image/png;base64," + str;

This works perfectly well and I'm able to display the image. The problem occurs when I try to add this line of code within the repeater. The error says "The name 'imageTest' does not exist in the current context. I'm sure this is a simple problem but thanks in advance

hello @Stuart, the img tag is inside the repeater so you need first to access the repeater item. — Dr. Stitch, Apr 14 '16 at 04:05
Possible duplicate of [Updating an image's ImageUrl within a Repeater](http://stackoverflow.com/questions/2920475/updating-an-images-imageurl-within-a-repeater) — Dr. Stitch, Apr 14 '16 at 04:06
I've tried the code from this example before but couldn't get it working on mine — Stuart, Apr 14 '16 at 04:14

score 0 · Answer 1 · answered Apr 14 '16 at 06:40

As child controls will be created for each item in bound data, while referring to child control, you will have to refer through item collection. Also, for data bound controls, you will need to use FindControl method to refer child controls. You can use ItemDataBound event to get the image control by following code:

 protected void repeaterEvent_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
(e.Item.FindControl("imageTest") as HtmlImage).Src = "data:Image/png;base64," + str;
}

Image tag within a repeater ASP.NET C#

1 Answers1