WebClient Async Upload for multiple servers

Hi All,
I'm trying to create an application that can upload the same file to multiple local servers at the same time.

I'm using this function to upload the file:

private void UploadFile(string _ip, string _file)
{
//Setup the client and Credentials
WebClient wc = new WebClient();
wc.Credentials = new NetworkCredential("user", "pass");

//set the Async routines
wc.UploadFileCompleted += new UploadFileCompletedEventHandler(UploadFileDone);
wc.UploadProgressChanged += new UploadProgressChangedEventHandler(UploadProgress);

wc.UploadFileAsync(new Uri("http://" + _ip + DBPath), "POST", _file);
}


And When I Press the Start button, this routine runs the "UploadFile" Over each server in the list

private void btn_Start_Click(object sender, EventArgs e)
{
for (int i = 0; i < SiteList.Items.Count; i++)
{
UploadFile(SiteList.Items[i].Text, txtURL.Text);
}
}


The Problem is, I Can't seem to find a way to "link" between the routine "UploadProgress" & "UploadFileDone" for each site...

The ListView Is Like this:


IP Address | Upload Status
--------------------------
10.134.1.1 | Start...
10.134.1.2 | Uploading 23%
10.134.1.3 | Done.
10.134.1.4 | Uploading 71%



Thanks, for the assistant.

Liad

In your call to UploadFileAsync, add an extra parameter (object userToken) that is the ip address or some other unique identifier.

Code:

---

wc.UploadFileAsync(new Uri("http://" + _ip + DBPath), "POST", _file, _ip);

---

This Ip will then be passed to your call back method. So, in your methods for UploadFileDone and UploadProgress you will have Event Args available that will contain this ip address in the UserState property of the event args.

Code:

---

void UploadProgress(object sender, UploadProgressChangedEventArgs e)
{
    string ip = (string)e.UserState;
}

---

Have a look at:
http://msdn.microsoft.com/en-us/library/ms144227.aspx
to see a description of userToken.