Получение данных из asp:FileUpload и запись в ListItem.Attachment

В веб-часть добавим:

<asp:FileUpload ID="FileUpload1" runat="server"/>

   

в code behinde пишем:

ViewState["fileContents"] = GetFileContents(FileUpload1.PostedFile);

byte[] myfile = (byte[])ViewState["fileContents"];

SPListItem item = web.Lists["nameList"].Items.Add();

item["Title"]="nameListItem";
item.Attachments.Add(FileUpload1.FileName, myfile);

item.Update()

private byte[] GetFileContents(HttpPostedFile postedFile)

        {           

            HttpPostedFile file = postedFile;

            Stream fstream = file.InputStream;

            byte[] contents = new byte[fstream.Length];

            fstream.Read(contents, 0, (int)fstream.Length);

            fstream.Close();

            fstream.Dispose();

            return contents;

        }