"Linda Liu [MSFT]" wrote:

> Hi CJL,
>
> I performed a test based on your description but I didn't reproduce the
> problem.
>
> I set up a Windows application project and drag&drop a ListView from
> Toolbox onto the form. I set the VirtualMode property of the listview to
> true and the VirtualListSize property to 10 and handle the
> RetrieveVirtualItem event of the listview.  I add a button on the form to
> show the selected indices. The following is the code in the form.
>
>  public partial class Form1 : Form
>     {
>         public Form1()
>         {
>             InitializeComponent();
>             this.listView1.RetrieveVirtualItem += new
> RetrieveVirtualItemEventHandler(listView1_RetrieveVirtualItem);
>         }
>
>         void listView1_RetrieveVirtualItem(object sender,
> RetrieveVirtualItemEventArgs e)
>         {         
>             ListViewItem item = new ListViewItem(e.ItemIndex.ToString());  
>        
>             e.Item = item;             
>         }
>
>         private void button1_Click(object sender, EventArgs e)
>         {
>             MessageBox.Show("SelectedIndices: " +
> this.listView1.SelectedIndices.Count.ToString());
>             for (int i = 0; i < this.listView1.SelectedIndices.Count; i++)
>             {
>                
> MessageBox.Show(this.listView1.SelectedIndices[i].ToString());
>             }         
>         }
>   }
>
> Build the project and run it. If I select 3 items using Shift key in the
> listview and click the button on the form, a message box pops up saying
> 'SelectedIndices: 3' firstly and three message boxes show up consequently
> and each of them says the index of each selected item.
>
> Is there any difference between your project and mine? If yes, you may show
> me some sample code or send me your project that could just reproduce the
> problem. To get my actual email address, remove the 'online' from my
> displayed email address.
>
> I look forward to your reply.
>
>
> Sincerely,
> Linda Liu
> Microsoft Online Community Support
>
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>

"Linda Liu [MSFT]" wrote:

> Hi CJL,
>
> I performed another test. I handled the SelectedIndexChanged event of the
> listview and checked the SelectedIndices property of the listview.
>
> The result of my test is that when I hold the Shift key and select a range
> of the list view items, the SelectedIndexChanged event is raised once and
> the SelectedIndices property is empty.
>
> If I don't hold the Shift key to select only one list view item at one
> time, the SelectedIndexChanged event is raised twice. The event occuring
> for the first time is caused by unselecting the previous selected item and
> the SelectedIndices property is empty at this time. The event being raised
> for the second time is caused by selecting the new item and the
> SelectedIndices property has one element at this time.
>
> It seems that the SelectedIndexChanged event isn't raised after the new
> items are selected, when we hold the Shift key and selected a range of the
> items.
>
> I think the SelectedIndexChanged event makes sense only when one list view
> item is selected at one time.
>
> Hope this helps.
> If you have any concerns, please feel free to let me know.
>
>
> Sincerely,
> Linda Liu
> Microsoft Online Community Support
>
>

> Hi CJL,
>
> How about the problem now?
>
> If you have anything unclear, please feel free to let me know.
>
> Thank you for using our MSDN Managed Newsgroup Support Service!
>
>
> Sincerely,
> Linda Liu
> Microsoft Online Community Support