Partial Type
System/Windows/Forms/Layout/Containers/SplitContainer.cs
System/Windows/Forms/Layout/Containers/SplitContainer.SplitContainerAccessibleObject.cs
System/Windows/Forms/Layout/Containers/SplitContainer.SplitContainerMessageFilter.cs
System/Windows/Forms/Layout/Containers/SplitContainer.SplitContainerTypedControlCollection.cs