index -1 does not have a value in datagridview

Error message: index -1 does not have a value in datagridview

scenario: The grid was bound to a simple object collection.  The object contained
string and decimal properties, nothing to fancy.  When an item was added to
the collection I would databind as follows (this happened on each item
"Add"):

If I added an item after I deleted all the items in
the grid (collection) and try to select it the grid would bomb out with the
following error: "Index -1 does not have a value".

myObject.CollectionProperty.Add(myBasicObject);

dgvGrid.DataSource = myObject.CollectionProperty;

This will cause the above error

solution:
set the simple object collection in to a binding source and set the resetbinding to false like below
Againg assign the binding source to the grid
bsBindingSource.ResetBindings(false);
bsBindingSource.DataSource = myObject.CollectionProperty;
dgvGrid.DataSource =  bsBindingSource;

to the Add routine, just after the object is added to the collection.
Viola!  Problem was fixed, and I no longer needed to bind the grid twice.  I
was able to make the binding work now with just this: