Placeholder Parentage

Table B-9 shows the complete parentage of the CMS Placeholder class. The properties and methods listed in italics in the table are defined by the class in the column header and then inherited by the derived class(es) to the left. So, for instance, only GetHashCode is coded in the CmsObject class, whereas Equals, GetType, and ToString are coded in the System.Object class and then inherited by the CmsObject class. All these members are inherited by the Placeholder class. Datasource, for example, is coded in the Placeholder class and is not inherited by any other class.

Table B-9. Placeholder Parentage

Placeholder	CmsObject	System.Object
Public Properties
Datasource
Datasource.RawContent
Definition
Name
Posting
Public Methods
Equals	Equals	Equals
GetHashCode	GetHashCode
GetType	GetType	GetType
ToString	ToString	ToString
Protected Constructors
Placeholder Constructor
Protected Methods
BeginWrite
EndWrite
RetrieveContent
SaveContent

Table B-10 defines all the members listed for the Placeholder class in Table B-9.

We have included a classification column in Table B-10. This is not a CMS classification. It was included to make it easier to locate the discussion about each member in Chapter 27.

Table B-10. Placeholder Member Descriptions

Placeholder	Classification	Description
Public Properties
Datasource	Read/write	Gets and sets a data source for this Placeholder, allowing it to detour where it saves and loads its data from.
Datasource. RawContent	Read/write	Gets or sets the raw data to be saved and returned.
Definition	Child object	Gets the PlaceholderDefinition that governs this Placeholder.
Name	Read-only	Gets the name of this Placeholder.
Posting	Child object	Gets the Posting to which this Placeholder belongs.
Public Methods
Equals	System	Determines whether two Object instances are equal.
GetHashCode	Read-only	Gets the hash code for the object.
GetType	Read-only	Gets the Type of the current instance.
ToString	System	Returns a String that represents the current object type.
Protected Constructors
Placeholder Constructor	Other	Creates a new instance of the Placeholder class.
Protected Methods
BeginWrite	Other	Raises the PlaceholderPropertyChanging event to prepare for updating a Placeholder property.
EndWrite	Other	Raises the PlaceholderPropertyChanged event to end the Placeholder property update process.
RetrieveContent	Other	Retrieves the raw content from the CMS Content Repository.
SaveContent	Other	Saves Placeholder content as it is ready to be stored in the CMS Content Repository.