Visual Studio 2017을 사용하는 것이 좋습니다.

PolicyCollection.Contains Method

This member is overloaded. For complete information about this member, including syntax, usage, and examples, click a name in the overload list.

  Name Description
Public method Contains(String) Verifies whether the specified string exists in the collection.
Public method Contains(T) Determines whether the collection contains the specified object. Do not reference this member directly in your code. It supports the SQL Server infrastructure. (Inherited from SfcCollatedDictionaryCollection<T, K, ParentT>.),SQL.110).gif Contains(T)