There are different ways you can add documents to a doc library or to list item as an attachment. You could use object model, built-in web service, custom web service that uses object model, or HTTP PUT method.
In this post I will be stepping through them in detail. Let us take the object model approach first. For the sake of simplicity I have created a simple windows forms app that will push documents in to the document library and list
Adding documents to a Document Library and updating document attributes :
1: private void button1_Click(object sender, EventArgs e)
2: {
3: if (openFileDialog1.ShowDialog() == DialogResult.OK)
4: {
5: try
6: {
7: FileStream myStream;
8: string fullName;
9: if ((myStream = (FileStream)openFileDialog1.OpenFile()) != null)
10: {
11: fullName = openFileDialog1.FileName;
12: FileInfo myFileInfo = new FileInfo(fullName);
13: using (myStream)
14: {
15: using (SPSite oSite = new SPSite("http://vslearnmoss/sites/FileUpload"))
16: {
17: using (SPWeb oWeb = oSite.OpenWeb())
18: {
19: SPFolderCollection oFolders = oWeb.GetFolder("MyDocuments").SubFolders;
20: SPFolder oFolder = oFolders["Folder1"];
21: SPFileCollection oFileColl = oFolder.Files;
22: Hashtable oDocAttribs = new Hashtable { { "Field1", "Value1" }, { "Field2", "Value2" } };
23: SPFile oFile = oFileColl.Add(myFileInfo.Name, myStream, oDocAttribs, true);
24: }
25: }
26:
27: }
28: }
29: }
30: catch (Exception ex)
31: {
32: MessageBox.Show("Error: " + ex.Message);
33: }
34: }
35:
36: }
Adding document attachments to a list item :
1: private void button1_Click(object sender, EventArgs e)
2: {
3: if (openFileDialog1.ShowDialog() == DialogResult.OK)
4: {
5: try
6: {
7: string fullName;
8: fullName = openFileDialog1.FileName;
9: FileInfo myFileInfo = new FileInfo(fullName);
10: byte[] fileData = System.IO.File.ReadAllBytes(fullName);
11:
12: using (SPSite oSite = new SPSite("http://vslearnmoss/sites/FileUpload"))
13: {
14: using (SPWeb oWeb = oSite.OpenWeb())
15: {
16: SPList oList = oWeb.Lists["MyList"];
17: SPQuery oQuery = new SPQuery { Query = "0" };
18: SPListItem oItem = oList.GetItems(oQuery).Add();
19: oItem["Title"] = textBox1.Text;
20: SPAttachmentCollection attachments = oItem.Attachments;
21: attachments.Add(myFileInfo.Name, fileData);
22: oItem.Update();
23: }
24: }
25: }
26: catch (Exception ex)
27: {
28: MessageBox.Show("Error: " + ex.Message);
29: }
30:
31: }
32: }
One thing to note when accessing the list for creating a new list item is to be mindful that when SPList.Items.Add is called it fetches all the items before creating a new item, one way to avoid is to make a blank query that fetches zero results and add a new list item to the collection. [Thanks to Rob Garret]
SPQuery oQuery = new SPQuery { Query = "0" };
SPListItem oItem = oList.GetItems(oQuery).Add();
You can look for more info about adding list item efficiently in this article by Rob Garret.
In the next part of this article, I will show you how to utilize web services or HTTP PUT method to push documents into the SharePoint document library.
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