Assembly: mscorlib (in mscorlib.dll)
J# supports the use of explicit interface implementations, but not the declaration of new ones.
JScript supports the use of explicit interface implementations, but not the declarations of new ones.
Property Valuetrue if the ICollection is read-only; otherwise, false. In the default implementation of Dictionary, this property always returns false.
A collection that is read-only does not allow the addition, removal, or modification of elements after the collection is created.
A collection that is read-only is simply a collection with a wrapper that prevents modifying the collection; therefore, if changes are made to the underlying collection, the read-only collection reflects those changes.
Getting the value of this property is an O(1) operation.
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.