ClearPages Method
Clears a range of pages in a page blob.
Syntax
public void clearPages(String pageBlob, long byteOffset, long pageCount);
Remarks
This method clears PageCount pages, from ByteOffset onwards, for the specified PageBlob in the container currently selected by Container.
ByteOffset must be a multiple of 512; i.e. ByteOffset % 512 == 0. PageCount must be a number between 1 and the number of pages in the page blob following ByteOffset (inclusive).
If the specified blob has an active lease, its lease Id must be specified using LeaseId, or the request will fail.