In sharepoint how can you check in an SPListItem?
See on MSDN: SPListItem.File.CheckIn();
For example:
SPFile file = item.File;
if (file.CheckOutStatus != SPFile.SPCheckOutStatus.None)
{
file.CheckIn("Reason for check in.", SPCheckinType.MajorCheckIn);
}
The optional second parameter allows specification of either minor, major or overwrite check in via the SPCheckinType enumeration.