AJAX :: AsyncFileUpload Not Working On Hosting Server?

i AsyncFileUpload this is working fine in my local server but when i upload the files into my hosting server no file is uploading. this is my code to save the file.

Protected Sub tbnSave_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles tbnSave.Click
Dim cmd As New MySqlCommand
Dim cn As New MySqlConnection
cn.ConnectionString = "server=localhost;User Id=root; password=papidm;database=jis;Persist Security Info=True"
cn.Open()
cmd.Connection = cn
cmd.CommandType = System.Data.CommandType.Text
cmd.CommandText = "Insert into PhotoAlbum (Photo,PhotoName,Descr,AlbumId) values (@Photo,@PhotoName,@Descr,@AlbumID)"
cmd.Parameters.Add(New MySqlParameter("@Photo", "~/images/" + txtFileName.Text + ".jpg"))
cmd.Parameters.Add(New MySqlParameter("@PhotoName", txtFileName.Text))
cmd.Parameters.Add(New MySqlParameter("@Descr", TextBox2.Text))
cmd.Parameters.Add(New MySqlParameter("@AlbumID", ddlArchive.SelectedValue))
cmd.ExecuteNonQuery()
fileName = MapPath("~/images/") + txtFileName.Text + ".jpg"
AsyncFileUpload1.SaveAs(fileName)
End Sub