plz i need some help

If IsPostBack Then
Dim path As String = Server.MapPath("~/UploadedVideos/")
Dim fileOK As Boolean = False
If FileUpload1.HasFile Then
Dim fileExtension As String
fileExtension = System.IO.Path. _
GetExtension(FileUpload1.FileName).ToLower()
Dim allowedExtensions As String() = _
{".mov", ".wmv", ".avi", ".vob", ".mp4"}
For i As Integer = 0 To allowedExtensions.Length - 1
If fileExtension = allowedExtensions(i) Then
fileOK = True
End If
Next
If fileOK Then
Dim Conn As New SqlConnection(ConfigurationManager.ConnectionStrings("projectConnectionString").ConnectionString)

Conn.Open()
Try
Dim FilePath = path & FileUpload1.FileName
'Here you can fire your insert statement in filepath value u can pass directly that value
Dim SQL As String = "INSERT INTO EmpData ( [Video]) VALUES (@VideoUrl)"
Dim cmd As New SqlCommand(SQL, Conn)
cmd.Parameters.Add("@VideoUrl", SqlDbType.NVarChar, 50, FilePath)
FileUpload1.PostedFile.SaveAs(path & _
FileUpload1.FileName)
lblError.Text = "File uploaded!"
cmd.ExecuteNonQuery()
Conn.Close()
Catch ex As Exception
lblError.Text = "File could not be uploaded." & ex.Message
End Try

Else
lblError.Text = "Cannot accept files of this type."
End If
End If
End If


i've saved it into a private sub Upload() to call it from the save button but when i press the button this MSG appears:
The connection was reset
The connection to the server was reset while the page was loading.

dunno where is my mistake plz can anyone help ????