Fill ListBox2 with SelectedItems from ListBox1 when ListBox1 filled using LINQ

I have filled a ListBox from LINQ with the following code:
private CateringDataContext Db = new CateringDataContext();
private void Form1_Load(object sender, EventArgs e)
{ var allSides = from foodItem in Db.FoodItems
where foodItem.FoodType.Equals("Side")
select foodItem;
foodItemBindingSource2.DataSource = allSides;
}

I am trying to fill a ListBox with the SelectedItems from another ListBox as follows:
int rowSide = 0;
Object[] valueSide = new Object[SideListBox1.SelectedItems.Count];
foreach (Object dataRowSide in SideListBox1.SelectedItems)
{
valueSide[rowSide] = ((DataRowView)dataRowSide).Row.ItemArray[1];
rowSide++;
}
MenuListBox.Items.AddRange(valueSide);

I get an error titled “InvalidCastException” saying “Unable to cast object of type 'CateringManagement2.FoodItem' to type 'System.Data.DataRowView'.”

Will someone tell me what I am doing wrong. This code works if I use DataSets instead of LINQ