Асинхронная загрузка файлов с помощью jquery и обработчика в ASP.NET

Hi i want to implement async Fileupload in asp.net with jquery.
 
When i will upload that time  i have to submit others textbox vaue also. 
So  to do that i am using the logic ...
 
first i will upload the file and it will save to server then in final submit button i will send the form data and uploaded file name with service.
 
Frist of all i dnt want to refresh my page so i want to use Ajax tookit async fileupload control.
 
==================
 
After file upload i want to get file name as response so that in final submit button i can send the form data and file name as well.
 
I have written code but im facing problem.
 
whever response im getting  i am writting that in a label and that label value i want in backend .
 
but that labe value is empty always i dnt know why it is....

<script type="text/javascript">
function uploadComplete(sender, args) {
$get("<%=Label1.ClientID%>").innerHTML = args.get_fileName();
}
</script>
 
 
 
aspx code================== =======
 
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<h3>File upload control</h3>
<div>
<table border="1" cellpadding="1" cellspacing="0">
<tr>
<td>
Name :
</td>
<td>
<input type="text" id="name" />
</td>
</tr>
<tr>
<td>
Photo :
</td>
<td>
<ajaxToolkit:AsyncFileUpload ID="AsyncFileUpload1" runat="server" OnClientUploadComplete="uploadComplete"
OnUploadedComplete="AsyncFileUpload1_UploadedComplete" UploaderStyle="Modern" />
</td>
</tr>
</table>
<br />
<asp:Label ID="Label1" runat="server"></asp:Label>
</div>
<div>
<asp:Button Text="Save" ID="btnSave" runat="server" OnClick="btnSave_Click" />
<asp:Button Text="Cancel" ID="btnCancel" runat="server" OnClick="btnCancel_Click" />
</div>
</form>
 
C# code================================ 
 
protected void Page_Load(object sender, EventArgs e)
{
}
protected void AsyncFileUpload1_UploadedComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
{
AsyncFileUpload1.SaveAs(Server.MapPath("~/Temp/") + Path.GetFileName(AsyncFileUpload1.FileName));
}
protected void btnSave_Click(object sender, EventArgs e)
{
}
protected void btnCancel_Click(object sender, EventArgs e)
{
string file = Label1.Text;
}
 
 
======================================
 
 
Probelm 1:
 
I want to get file name in  btnCancel_Click  but now it coming empty.
 
here i will delete the file if user cancle the form.
 
Problem 2: 
 
If i calick to btnCancel_Click then after complete this form again contorl coming to  AsyncFileUpload1_UploadedComplete this function. (C#)
 
i dnt want that. 
 
Probelm 3:
 I want to use generic handler  how to use that?
 
 
Someone help me please! if you dnt understand the you can ask me again.
 
Last 3 days im stuck in file upload cntrol.
 
Remember it is not MVC application it is asp.net application.
I want to implement async file uploader.
I dnt want to use extra button to save a file.
Its a single file uploader control.
I dnt to do maximum this in client side and upload and file save should handel by handler.
 
I serch lot i did not get actual soluation.
 
If you have any other idea then you are welcome.
 
Thnak you in advance.