How to get item click event in asp.net repeater control? - asp.net

Question

I am using a repeater control to show some data on my page.
The repeater item template has an image and a label field.
I want that when i click the image , I get an event containing the id field of my data item.
How can I achieve this ?
Actually when I click the image i want to go to another page and want to show detailed information of my data item, in repeater i m just showing short information.
My repeater looks like this:
<asp:Repeater ID="itemRepeater" runat="server" OnItemCreated="itemRepeater_ItemCreated" >
<ItemTemplate>
<tr>
<td colspan="2">
<asp:Image ID="phImage" runat="server" ImageUrl='<%#"~/ImageHandler.ashx?id=" + DataBinder.Eval(Container.DataItem, "PhotoID")%>' />
</td>
<td>
<asp:Label ID="lblImageName" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Name") %>' />
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
I want to get PhotoID in the event when i click the image.
My photo class looks like this:
public class PhotoDC
{
public byte[] ImagebyteArray { get; set; }
public string Name { get; set; }
public int PhotoID { get; set; }
}
I have been doing winform programming just started web, maybe it is easy but i m struggling to find a solution.
I somehow managed to show hand cursor when i hover the image though.

Answer 1

Try this:
<asp:Repeater ID="itemRepeater" runat="server" OnItemCreated="itemRepeater_ItemCreated" >
<ItemTemplate>
<tr>
<td colspan="2">
<asp:ImageButton ID="phImage" runat="server" ImageUrl='<%#"~/ImageHandler.ashx?id=" + DataBinder.Eval(Container.DataItem, "PhotoID")%>' OnCommand="Image_Click" CommandName="ImageClick" CommandArgument='<%# Eval("PhotoID") %>' />
</td>
<td>
<asp:Label ID="lblImageName" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Name") %>' />
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
protected void Image_Click(object sender, CommandEventArgs e)
{
if (e.CommandName == "ImageClick"){
//e.CommandArgument --> photoid value
//Do something
}
}

Answer 2

You can use ItemCommand of repeater control
like this -
protected void itemRepeater_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
if (e.CommandName == "img_Click") // check command is cmd_delete
{
// get you required value
int CustomerID = Convert.ToInt32(e.CommandArgument);
//Write some code for what you need
}
}
}

Answer 3

Personally I think the simplest way to handle something like this is to simply use the ItemTemplate to generate a regular html link, rather than do any thing in the code-behind. Something like this:
<asp:Repeater ID="itemRepeater" runat="server" OnItemCreated="itemRepeater_ItemCreated" >
<ItemTemplate>
<tr>
<td colspan="2">
<a href="/Details.aspx?id=<%=DataBinder.Eval(Container.DataItem, "PhotoID")%>">
<asp:Image ID="phImage" runat="server" ImageUrl='<%#"~/ImageHandler.ashx?id=" + DataBinder.Eval(Container.DataItem, "PhotoID")%>' />
</a>
</td>
<td>
<asp:Label ID="lblImageName" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Name") %>' />
</td>
</tr>
</ItemTemplate>
I know this isn't strictly the question you asked, but IMHO it's the best approach to accomplish the task.