How do i know id of ListView item on OnItemUpdated?

Question

I have suppliers table with id int value for each supplier. I'm trying to edit columns of this table inside of ListView.

i'm trying to access e arg but it doesn't have any data on id of the row i'm trying to update?

Answer 1

use the sender instead of the e

protected void ListView1_ItemUpdated(object sender, ListViewUpdatedEventArgs e)
{
    if ((sender as ListView) != null)
    {

        ListView l = (ListView)sender;
        l.SelectedIndex;
        l.etc..............
        DataKey key = l.SelectedDataKey;
        object k = key.Values["foo"];        
    }
 }

Answer 2

You need to set the ListView.DataKeyNames to contain the property name of the uniqueId

<asp:ListView runat="server" ID="LvSample" DataKeyNames="SupplierId"/>

Then the dataKey will be available in the update events. It is worth nothing that you might want to use the ItemUpdating event instead of the ItemUpdated as this happens before Update occurs.

        protected void Page_Load(object sender, EventArgs e)
    {
        LvSample.ItemUpdating += new EventHandler<ListViewUpdateEventArgs>(LvSample_ItemUpdating);
        LvSample.ItemUpdated += new EventHandler<ListViewUpdatedEventArgs>(LvSample_ItemUpdated);

    }

    void LvSample_ItemUpdated(object sender, ListViewUpdatedEventArgs e)
    {
        var supplierId = e.NewValues["SupplierId"];
    }

    void LvSample_ItemUpdating(object sender, ListViewUpdateEventArgs e)
    {
        var supplierId = e.Keys["SupplierId"];
    }