Selected Items in listview count = 0 even if items are selected from checkbox

Question

private void button1_Click(object sender, EventArgs e)
    {
        try
        {
            int i=listView1.SelectedItems.Count;
            int j = listView1.SelectedIndices.Count;
            for (int k = 0; i < listView1.SelectedItems.Count; k++)
            {
                listView1.Items[k].Remove();
            }

        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

When I am selecting values from listview why is it returning count = 0 ?

Answer 1

The property SelectedItems returns the items that are selected, i.e. marked by clicking on the text (usually with a blue highlight).

To get the items whose checkboxes are checked, use the CheckedItems property.

Answer 2

You are modifying the collection that you use in for statement. Take a look for removing item from collection.

Answer 3

You can adjust your DataBind of ListView in : ! IsPostBack section

You persist your datas with ViewState

If(! IsPostBack)
{
  //You don't pass by this section when you post => you don'y erase your selected values 

  //Bind your ListView
}

Your datas are erased because when you post by clicking, you re-build your ListView et so erase selected values

Answer 4

You can use listview's property CheckedItems to check for all items that were checked.