Target Enumerator Class
public ref class BreakpointTargetEnumerator sealed : Microsoft::SqlServer::Dts::Runtime::DtsEnumerator
public sealed class BreakpointTargetEnumerator : Microsoft.SqlServer.Dts.Runtime.DtsEnumerator
type BreakpointTargetEnumerator = class inherit DtsEnumerator
Public NotInheritable Class BreakpointTargetEnumerator Inherits DtsEnumerator
Enumerators only enable reading the data in the collection. Enumerators cannot be used to modify the underlying collection.
Initially, the enumerator is positioned before the first element in the collection. The
Reset method also brings the enumerator back to this position. At this position, calling the Current property throws an exception. Therefore, you must call
MoveNext method to advance the enumerator to the first element of the collection before reading the value of Current.
After the end of the collection is passed, the enumerator is positioned after the last element in the collection, and calling
false. If the last call to
false, calling Current throws an exception. To set Current to the first element of the collection again, you can call
Reset followed by
An enumerator remains valid as long as the collection remains unchanged. If changes are made to the collection, such as adding, modifying, or deleting elements, the enumerator is invalidated and becomes irrecoverable; thus the next call to
Reset throws an
InvalidOperationException. However, if the collection is modified between
MoveNext and Current, Current will return the element that it is set to, even if the enumerator has been invalidated.
The enumerator does not have exclusive access to the collection; therefore, enumerating through a collection is not a thread-safe procedure. Even when a collection is synchronized, other threads could still modify the collection, which causes the enumerator to throw an exception. To guarantee thread safety during enumeration, you can either lock the collection during the entire enumeration or catch the exceptions resulting from changes made by other threads.
Gets the current BreakpointTarget object in the collection.
Advances the enumerator to the next element of the collection.(Inherited from DtsEnumerator)
Sets the enumerator to its initial position, which is before the first element in the collection.(Inherited from DtsEnumerator)