SharePoint Document Library C# - Upload/Download Document

In this article, I am going show how to Upload/Download document through code to a SharePoint document library. I am going to use SharePoint object model and refer the this A1, A2 articles for more information.Here is the sample code;

Upload Document

private void UploadDocument()

                {

                    try

                    {

                            this.Cursor = Cursors.WaitCursor;

                            string currentLibName = LibraryName;

                            string SelectedfilePath = FilePath;

                            bool overWrite = ISOverWrite;

                            SPSite Site = new SPSite(URL);

                            using (SPWeb web = Site.OpenWeb())

                            {

                                if (!System.IO.File.Exists(SelectedfilePath))

                                    throw new FileNotFoundException("File not found.", SelectedfilePath);

                                SPFolder libFolder = web.Folders[currentLibName];

                               

                                // Prepare to upload

                                string fileName = System.IO.Path.GetFileName(SelectedfilePath);

                                FileStream fileStream = File.OpenRead(SelectedfilePath);

                                //Check the existing File out if the Library Requires CheckOut

                                if (libFolder.RequiresCheckout)

                                {

                                    try

                                    {

                                        SPFile fileOld = libFolder.Files[fileName];

                                        fileOld.CheckOut();

                                    }

                                    catch { }

                                }

                               

                                // Upload document

                                SPFile spfile = libFolder.Files.Add(fileName, fileStream, overWrite);

                                libFolder.Update();

                                MessageBox.Show("File has successfully uploaded.", "Message");

                                try

                                {

                                    fileStream.Close();

                                }

                                catch (Exception) { }

                            }

                            this.Cursor = Cursors.Default;

                    }

                    catch (Exception ex)

                    {

                        MessageBox.Show(ex.Message, "Message");

                        return; ;

                    }

Download Document

void DownloadDocument()

                {

                    try

                    {

                            SPSite Site = new SPSite(URL);

                            string filePath = filePath;

                            string DocLib = LibraryName;

                            int docID = DocumentID;

                            using (SPWeb web = Site.OpenWeb())

                            {

                                SPList Selectedlist = web.Lists[DocLib];

                                SPListItem item = Selectedlist.GetItemById(docID);

                                byte[] binfile = item.File.OpenBinary();

                                FileStream fstream = new FileStream(filePath + "\\" + item.File.Name,

                                FileMode.Create, FileAccess.ReadWrite);

                                fstream.Write(binfile, 0, binfile.Length);

                                fstream.Close();

                                MessageBox.Show("Document has successfully saved.", "Message");

                            }

                    }

                    catch (Exception ex)

                    {

                        MessageBox.Show(ex.Message, "Message");

                        return;

                    }

                }