Remove selected Items from Asp.net ListBox

Question

I need to remove the selected items from a ListBox in asp.net. I keep finding examples for windows forms but not for asp.net.

I have a button click event that copies all items from one listbox to another. I want to be able to select individual items from the second listbox and click a button to remove them.

protected void btnAddAllProjects_Click(object sender, EventArgs e)
{

    foreach (ListItem item in lstbxFromUserProjects.Items)
    {
        lstBoxToUserProjects.Items.Add(item.ToString());
    }


}

    protected void btnRemoveSelected_Click(object sender, EventArgs e)
    {}

Answer 1

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);
        }

Answer 2

Try this to remove selected items from list box.

 protected void Remove_Click(object sender, EventArgs e)
{
    while (ListBox.GetSelectedIndices().Length > 0)
    {
        ListBox.Items.Remove(ListBox.SelectedItem); 
    }
}