fix ToBindingList issue#3

DevExpressExampleBot merged 3 commits intoDevExpress-Examples:18.1.3+DevExpress-Examples/winforms-scheduler-data-binding-entity-framework-code-first:18.1.3+from

SvetlanaPN:18.1.3+SvetlanaPN/entity-framework-codefirst-model-for-xtrascheduler-data-binding-e4107:18.1.3+Copy head branch name to clipboard