UploadStreamAsync Method (original) (raw)
Summary
Uploads the data in a stream to a SharePoint server folder asynchronously.
Syntax
Parameters
sourceStream
The stream containing the item data to upload. This value cannot be null (Nothing in VB).
siteUri
Full URL to the destination SharePoint site. This could be http://MySite or http://MySiteCollection/MySite. This value cannot be null (Nothing in VB).
destinationPath
Destination path (folder and file name) of the item to be created in the SharePoint server. See the remarks section for more information. This value cannot be null (Nothing in VB).
userState
The optional user-supplied state object that is used to identify the task that raised the UploadCompleted event.
Example
This example will create a stream of an image file and uploads it to SharePoint asynchronously.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.SharePoint.Client;
public void SharePointClientUploadStreamAsyncExample()
{
string sourceFileName = LEAD_VARS.ImagesDir + @"\Ocr1.tif";
// Replace SHAREPOINT_SITE_URI with a valid URL to a SharePoint site, for example
// http://SiteCollection/MySite
Uri siteUri = new Uri(SHAREPOINT_SITE_URI);
// Replace SHAREPOINT_FOLDER_NAME with a valid folder on the site above, for example
// "Documents" or "Documents\Sub Documents"
string folderName = SHAREPOINT_FOLDER_NAME;
// Get a stream to the file
using (FileStream stream = File.OpenRead(sourceFileName))
{
SharePointClient spClient = new SharePointClient();
spClient.OverwriteExistingFiles = true;
// Optional: Set the credentials:
spClient.Credentials = new NetworkCredential(USER_NAME, PASSWORD, DOMAIN);
// If this is a console application demo, we might exit the program before the operation completes,
// so use a wait handle to not exit this method till the opreation completes
AutoResetEvent wait = new AutoResetEvent(false);
// Build the upload document full path (folder + file name)
string destinationPath = Path.Combine(folderName, Path.GetFileName(sourceFileName));
// Upload the document
spClient.UploadCompleted += new EventHandler<SharePointClientUploadCompletedEventArgs>(UploadStreamAsyncCompleted);
spClient.UploadStreamAsync(stream, siteUri, destinationPath, wait);
// Wait till the operation completes
Console.WriteLine("Waiting to upload to finish");
wait.WaitOne();
wait.Close();
Console.WriteLine("Upload completed");
}
}
private static void UploadStreamAsyncCompleted(object sender, SharePointClientUploadCompletedEventArgs e)
{
// Remove our handler
SharePointClient spClient = sender as SharePointClient;
spClient.UploadCompleted -= new EventHandler<SharePointClientUploadCompletedEventArgs>(UploadStreamAsyncCompleted);
if (e.Error == null && !e.Cancelled)
{
// All OK, the file is in SharePoint
}
else
{
// Some error occured
if (e.Error != null)
Console.WriteLine(e.Error.Message);
else
Console.WriteLine("User cancelled");
}
// Tell whoever is listening that we are done
EventWaitHandle wait = e.UserState as EventWaitHandle;
wait.Set();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}