Find Empty Data in Listview from code behind?

Question

I am trying to redirect to error page if the Listview is empty. I did try below workaround but doesn't seems to redirect.

protected void lvDetils_ItemDataBound(object sender, ListViewItemEventArgs e)
    {
        if (e.Item.ItemType == ListViewItemType.EmptyItem)
        {
            Response.RedirectToRoutePermanent("NotFound");
        }
    }

What is wrong with this? Is it possible to do like that?

I have not tried this. But in which event should i use? I am using ObjectDataSource to bind the listview. but what is wrong with my piece of code? — CoreLean, Mar 31 '13 at 14:47

Ramesh Rajendran · Accepted Answer · 2015-06-16T10:29:08.343

2

try this below code instead of your code

if (e.Item.ItemType == null)

Edit

or try this code

if (lvDetils.Items.Count==0)

New Edit:

But you have another option is .use lvDetils_ItemCreated

protected void lvDetils_ItemCreated(object sender, ListViewItemEventArgs e)
    {
        if (e.Item.ItemType == ListViewItemType.EmptyItem)
        {
            Response.RedirectToRoutePermanent("NotFound");
        }
    }

edited Jun 16 '15 at 10:29

answered Mar 31 '13 at 14:39

Ramesh Rajendran

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which event should i use for this? – CoreLean Mar 31 '13 at 14:53
I tried. It fires as shown i redirect to the page and for all the page content it redirect to "404.aspx" page. – CoreLean Mar 31 '13 at 14:59
Okay .You want use lvDetils_ItemCreated event. Please see my above new edited code – Ramesh Rajendran Mar 31 '13 at 15:00
Thanks. It works now. So i had to use different event do like this. Just one small request. Is it possible to send status as 404 too? – CoreLean Mar 31 '13 at 15:10
You can add this in your webconfig and more ways please look these links – Ramesh Rajendran Mar 31 '13 at 15:32

score 0 · Answer 2 · edited May 23 '17 at 11:51

Ok.I have got it done finally with the status code too. Thanks Ramesh Rajendran.

Below is the code.

protected void lvEnglishMovieDetils_ItemCreated(object sender, ListViewItemEventArgs e) 
    {
        if (e.Item.ItemType == ListViewItemType.EmptyItem)
        {
            Response.RedirectToRoutePermanent("NotFound");
        }
    }

And in my 404.aspx i worte below code is below link

public partial class Custom404 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Page.Title = "Page Not Found";
    }

    protected override void Render(HtmlTextWriter writer)
    {
        base.Render(writer);
        Response.StatusCode = 404;
    }
}

Source of information for status code:

how to set 404 status code for the page

Find Empty Data in Listview from code behind?

2 Answers2