Collection was modified; enumeration operation may not execute.
mscorlib
at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
at System.Collections.Generic.List`1.Enumerator.MoveNextRare()
at System.Linq.Enumerable.WhereListIterator`1.MoveNext()
at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
at System.Linq.OrderedEnumerable`1.d__1.MoveNext()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at controls.Swatches.LoadColors(Product& p)
at productinfo1.InitImage()
at productinfo1.d__56.MoveNext()
