Since ArcGIS 9.2, the esriRasterSdeCompressionTypeEnum class has been replaced with esriRasterCompressionTypeEnum.
The esriRasterCompressionTypeEnum class is a new enumeration type, which supports writing compressed images to a file, geodatabase, file formats and ArcSDE.
Existing code that uses the deprecated esriRasterSdeCompressionTypeEnum enumeration type is still supported. However, if used explicitly in C#, or other language that does not support implicit casting, a compilation error may occur. In this case, the workaround is to add an explicit cast to the esriRasterCompressionTypeEnum type.