How to copy attachments from one list item to another

The microsoft support article for WSS 2 shows us how to download attachments from a list item. Basically, the attachments for a list item are stored as SPFile objects under a hidden folder in the list where those attachments are (a folder called “Attachments”) – where each list item that has an attachment has its own folder – with the ID of the item being the folder’s name. Here is a code sample for a function to copy attachments from one item to another.

private void CopyAttachments(SPListItem sourceItem, SPListItem targetItem){

try {//get the folder with the attachments for the source item

SPFolder sourceItemAttachmentsFolder = sourceItem.Web.Folders["Lists"].SubFolders[sourceItem.ParentList.Title] .SubFolders["Attachments"].SubFolders[sourceItem.ID.ToString()];

//Loop over the attachments, and add them to the target item

foreach (SPFile file in sourceItemAttachmentsFolder.Files)

{byte[] binFile = file.OpenBinary();

targetItem.Attachments.AddNow(file.Name, binFile);}

} catch { }finally { sourceItem.Web.Dispose();}}

Ref : Sharepoint Tips And Tricks

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