SharePoint: How to retrieve specific version of file from a document library thro’ programmatically?

SharePoint: How to retrieve specific version of file from a document library thro’ programmatically?


The SPFile.Versions API can be used to retrieve the specific version of the document library.


//Open the web
SPWeb web = new SPSite("http://karthickmain:9091/sites/siteb").OpenWeb();

//Get the folder
SPFolder folder = web.Folders["Shared Documents"];
//Get the file
SPFile file = folder.Files["abc.doc"];
//Get all the versions
SPFileVersionCollection versions = file.Versions;
//Get the first version
SPFileVersion version = versions[3];
//Get the data
byte [] dBytes = version.OpenBinary();

How to restore a specific version back to the document library thro’ programmatically?

There are two ways we can restore the document.

1. SPFileVersionCollection.Restore() method
//restore specific version

versions.Restore(3);
2. SPFile.SaveBinary() method
file.SaveBinary(versions[3].OpenBinary());
But however the Restore method is more efficient as per msdn

LINKS:
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http://msdn.microsoft.com/library/default.asp?url=/library/en-us/spptsdk/html/tscSPFileVersionCollection_SV01013561.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/spptsdk/html/tsmSPFileVersionCollectionRestore_SV01013756.asp