Accepted answer

It seems like you're trying to associate a BindingSource to the first DataTable with the same Type name. The straightforward approach would be to prepare a Dictionary up front that maps the names you're using for the lookup to the tables:

var tablesByName = (from set in model.DataSource 
                    from table in set.Tables 
                    select table) // get all tables of all sets
                   .ToDictionary(table => (table.GetType() as Type).Name)

(If the tables never change, this can be a static field that's only computed once.)

Then the rest of your code should reduce to:

foreach (var source in view.DataContext) 
    DataTable table;
    var name = (source.DataSource as Type).Name;
    if (tablesByName.TryGetValue(name, out table))
        source.DataSource = table;

I've omitted handling things like there being tables with duplicate names. (Which would make ToDictionary() fail, so you have to get rid of duplicates before that call.)

Related Query

More Query from same tag