How to transfer multiselect listbox items(any orde selected items) to another listbox in .vb

listbox

I have three listboxes.
the selected items from one listbox(lst1) should be populated in another listbox(lst2) on click of add button and accordingly the third listbox(lst3) needs to be populated with values from db as per the selected values in lst2.
theres no selecteditems property
i m using ms visual studio2005
similar logic need to be used on click of remove button

Best Answer

public static class Extensions
{
    public static IEnumerable<ListItem> GetSelectedItems(
           this ListItemCollection items)
    {
        return items.OfType<ListItem>().Where(item => item.Selected);
    }


}
On button click
------------------
var selected = lstFirst.Items.GetSelectedItems();

    foreach (var li in selected)
    {
        if (!lstSecond.Items.Contains(li))
        {
            ListItem newItem = new ListItem(li.Text, li.Value);
            lstSecond.Items.Add(newItem);
        }
    }

Related Solutions

C# – Remove selected Items from Asp.net ListBox

If you just want to clear the selected items then use the code below:

        ListBox1.ClearSelection();

        //or

        foreach (ListItem listItem in ListBox1.Items)
        {
            listItem.Selected = false;
        }

If you mean to what to actually remove the items, then this is the code for you..

        List<ListItem> itemsToRemove = new List<ListItem>();

        foreach (ListItem listItem in ListBox1.Items)
        {
            if (listItem.Selected)
                itemsToRemove.Add(listItem);
        }

        foreach (ListItem listItem in itemsToRemove)
        {
            ListBox1.Items.Remove(listItem);
        }

Best Answer

Related Solutions

C# – Remove selected Items from Asp.net ListBox

Related Topic