Question

I’ve got an aspx file, and rendered within it is an ascx control.

The aspx file has a button, that, when clicked, fires an event.

I’ve got a button in the ascx control that I’d like to hook up to that same event…but I’m not clear on how to do it. I’m obviously missing something fairly elementary.

I was thinking it would be something like this:

myButton.Click += new EventHandler(btn_Click);

...

void btn_Click(object sender, EventArgs e)
{
    <some way to get ahold of the parent aspx>.btn_Click(sender, e)
}

But, I’ve had no luck thus far, which makes me wonder if I’m barking up the wrong tree.

Ideas?

Answer 1

You need to create an event handler in the user control, like this:

ASCX markup:

<asp:Button ID="UserControlButton" runat="server" OnClick="UserControlButton_Click" />

ASCX code-behind:

public event EventHandler ButtonClick;

protected void UserControlButton_Click(object sender, EventArgs e)
{
    if (ButtonClick != null)
        ButtonClick(sender, e);
}

In the page:

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" />
<uc:MyUserControl ID="UserControl1" runat="server" OnButtonClick="Button1_Click" />

In the code behind of the page:

protected void Button1_Click(object sender, EventArgs e)
{
    //if you need to differentiate one button from the other
    if (sender.Equals(Button1))
    {
        //page button logic
    }
    else
    {
        //user control button logic
    }
}