Upload Document in Document Library

Uploading files to a SharePoint library can be done using the Add method on the Files property of a SPWeb like this:

SPContext.Current.Web.Files.Add(documentLibrary.RootFolder.Url + "/" + fileUpload.FileName, contents);

In the example that follows we will build a webpart that uploads a file provided by the user to a SharePoint library. Please note that the SPList was not necessary, it is only used to validate that the document library exists.

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public class UploadWP : WebPart

{

private FileUpload fileUpload = new FileUpload();

private Button btnUpload = new Button();

private string documentLibrary;

[WebBrowsable, Personalizable]

public string DocumentLibrary

{

get

{

return documentLibrary;

}

set

{

documentLibrary = value;

}

}

protected override void CreateChildControls()

{

Controls.Add(fileUpload);

Controls.Add(btnUpload);

btnUpload.Text = "Upload";

btnUpload.Click += new EventHandler(OnUploadClick);

}

void OnUploadClick(object sender, EventArgs e)

{

SPList documentLibrary;

try

{

documentLibrary = ValidateList();

}

catch (Exception ex)

{

Controls.Add(new LiteralControl(ex.Message));

return;

}

Stream fStream = fileUpload.PostedFile.InputStream;

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

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

fStream.Close();

SPSecurity.CatchAccessDeniedException = false;

try

{

SPContext.Current.Web.Files.Add(documentLibrary.RootFolder.Url + "/" + fileUpload.FileName, contents);

}

catch (UnauthorizedAccessException)

{

Controls.Add(new LiteralControl("You are not authorized to upload files to the document library"));

}

}

private SPList ValidateList()

{

if (string.IsNullOrEmpty(DocumentLibrary))

{

throw new Exception("Please fill the Document Library property!");

}

if (!fileUpload.HasFile)

{

throw new Exception("Please select a file to upload.");

}

try

{

return SPContext.Current.Web.Lists[DocumentLibrary];

}

catch (ArgumentException)

{

throw new Exception("List not found!");

}

}

}