'宣言
Public MustOverride Function GetEnumerator() As System.Collections.Generic.IEnumerator(Of T)
public abstract System.Collections.Generic.IEnumerator<T> GetEnumerator()
'宣言
Public MustOverride Function GetEnumerator() As System.Collections.Generic.IEnumerator(Of T)
public abstract System.Collections.Generic.IEnumerator<T> GetEnumerator()