Hi I am dynamically creating link buttons in a 'ul li' list. I am then trying to tie each link button to a click event where i set a label to the text of the link button clicked. however the event that should fire doesnt get fired?
if (!Page.IsPostBack)
{
int listItemIds = 0;
foreach (Node productcolour in product.Children)
{
HtmlGenericControl li = new HtmlGenericControl("li");
LinkButton lnk = new LinkButton();
lnk.ID = "lnk" + listItemIds;
lnk.Text = productcolour.Name;
lnk.Click += new EventHandler(Clicked);
//lnk.Command += new CommandEventHandler(lnkColourAlternative_Click);
//lnk.Click
li.Controls.Add(lnk);
ul1.Controls.Add(li);
listItemIds++;
}
}
the above is wrapped within a if(!page.ispostback) and the label text is never set anywhere else. heres to the event
protected void Clicked(object sender, EventArgs e)
{
LinkButton lno = sender as LinkButton;
litSelectedColour.Text = lno.Text;
}
Code must run on each postback:
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
int listItemIds = 1;
for (int i = 0; i < 10; i++)
{
var li = new HtmlGenericControl("li");
var lnk = new LinkButton();
lnk.ID = "lnk" + listItemIds;
lnk.Text = "text" + i;
lnk.Click += Clicked;
//lnk.Command += new CommandEventHandler(lnkColourAlternative_Click);
//lnk.Click
li.Controls.Add(lnk);
ul1.Controls.Add(li);
listItemIds++;
}
}
private void Clicked(object sender, EventArgs e)
{
var btn = sender as LinkButton;
btn.Text = "Clicked";
}
Do this sort of thing OnInit
and make sure you recreate the controls on every postback.
See this KB article for an example - a bit outdated but the methodology is still the same.
来源:https://stackoverflow.com/questions/9485907/dynamically-created-list-of-link-buttons-link-buttons-not-posting-back