Parameters

idLists

Type: System.Collections.Generic.IEnumerable<IWithIdList>
The child identifier lists.

Return Value

Type: ShellItemIdList
An instance of ShellItemIdList or null if there is no common root folder.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable<IWithIdList>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).