Binding source tries to update identity

I set up a normal binding source with a datagridview to a table. I also set the ID to identity so that I wouldn't have to worry about it. But whenever I call .UpdateAll() on the BindingSource I get the SQL Exception



"Cannot insert explicit value for identity column in table 'Teachers' when IDENTITY_INSERT is set to OFF."



Now how do I tell the binding Source NOT to push the empty ID column to the table? I know this seems like an issue that was already discussed a hundred times before, but I'm new to this and it's driving me crazy.