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[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]
Advances the enumerator to the next element of the collection.
Namespace: System.Collections
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Function MoveNext As Boolean
bool MoveNext()
bool MoveNext()
abstract MoveNext : unit -> bool
function MoveNext() : boolean
Return Value
Type: System. . :: . .Boolean
true if the enumerator was successfully advanced to the next element; false if the enumerator has passed the end of the collection.
Exceptions
| Exception | Condition |
|---|---|
| InvalidOperationException | The collection was modified after the enumerator was created. |
Remarks
After an enumerator is created or after the Reset method is called, an enumerator is positioned before the first element of the collection, and the first call to the MoveNext method moves the enumerator over the first element of the collection.
If MoveNext passes the end of the collection, the enumerator is positioned after the last element in the collection and MoveNext returns false. When the enumerator is at this position, subsequent calls to MoveNext also return false until Reset is called.
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 irrecoverably invalidated and the next call to MoveNext or Reset throws an InvalidOperationException.
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see dd66cd4c-b087-415f-9c3e-94e3a1835f74.