How to efficiently delete all files in a document library?

Question

I am looking for a clear, complete example of programmatically deleting all documents from a specific document library, via the Sharepoint object model. The doclib does not contain folders. I am looking to delete the documents completely (ie I don't want them in the Recycle Bin).

I know of SPWeb.ProcessBatchData, but somehow it never seems to work for me.

Thanks!

Answer 1

I would persevere with the ProcessBatchData approach, maybe this will help:

Vincent Rothwell has covered this best: http://blog.thekid.me.uk/archive/2007/02/24/deleting-a-considerable-number-of-items-from-a-list-in-sharepoint.aspx

Otherwise I'm not sure the other recommendation will work, as a Foreach loop will not like that the number of items in the collection changes with each delete.

You are probably best placed doing a reverse for loop (I didn't test this code, just an example):

for (int i = SPItems.Length - 1; i >= 0; i--)
{
    SPListItem item = SPItems[i];
    item.File.Delete();
}