Friday, December 23, 2011

SharePoint List items bulk delete

Recently while working on a production case, we needed to delete around 2000 list items in a single shot. My idea was to use the data sheet view ActiveX control to do the bulk delete. But in production case where the server runs on 64 bit and clients run on 32 bit, there was problem invoking the ActiveX control and shared  the following snippet to do a batch delete.

private static void deleteAllListItems(SPSite site, SPList list)
StringBuilder sbDelete = new StringBuilder();
sbDelete.Append("<?xml version=\"1.0\" encoding=\"UTF-8\"?><Batch>");
string command = "<Method><SetList Scope=\"Request\">" + list.ID + "</SetList><SetVar Name=\"ID\">{0}</SetVar><SetVar     Name=\"Cmd\">Delete</SetVar></Method>";
foreach (SPListItem item in list.Items)
sbDelete.Append(string.Format(command, item.ID.ToString()));
Console.WriteLine("now deleting");

This snippet deletes that huge list much faster than traditional object model way.

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