The RemoveAt method was designed to allow complex controls, such as the DataGrid control, to remove items from the list. You should not use this method to actually remove items. Instead, use the Delete method of the DataView class to delete items.
// Get the CurrencyManager of a TextBox control.
CurrencyManager myCurrencyManager = (CurrencyManager)textBox1.BindingContext;
// If the count is 0, exit the function. if(myCurrencyManager.Count > 1)