Lit Item Attachments in SharePoint

A list item in SharePoint can have multiple attachments. Below is a code snippet in c#.Net to add an attachment to a list item programmatically.

This example demonstrates how a file, uploaded through a file upload control is added as an attachment to a list item. using (SPSite oSPsite = new SPSite(http: //website Url/)) { using (SPWeb oSPWeb = oSPsite.OpenWeb()) { oSPWeb.AllowUnsafeUpdates = true; // Fetch the List SPList list = oSPWeb.Lists["MyList"]; // Get the List item SPListItem listItem = list.GetItemById(1); // Get the Attachment collection SPAttachmentCollection attachmentCollection = listItem.Attachments; Stream attachmentStream; Byte[] attachmentContent; // Get the file from the file upload control if (this.fileDocAttach.HasFile) { attachmentStream = this.fileDocAttach.PostedFile.InputStream; attachmentContent = new Byte[attachmentStream.Length]; attachmentStream.Read(attachmentContent, 0, (int)attachmentStream.Length); attachmentStream.Close(); attachmentStream.Dispose(); // Add the file to the attachment collection attachmentCollection.Add(this.fileDocAttach.FileName, attachmentContent); } // Update th list item listItem.Update(); oSPWeb.AllowUnsafeUpdates = false; } }