I found the problem, the main point was setting " FtpConnection1.TransferType = EnterpriseDT.Net.Ftp.FTPTransferType.BINARY" when I finish upload or download
Code of VB:
Try
If ChkASC.Checked Then
If CHKAS400.Checked Then
FtpConnection1.InvokeFTPCommand(strQuoteType, "200")
Else
FtpConnection1.TransferType = EnterpriseDT.Net.Ftp.FTPTransferType.ASCII
End If
Else
FtpConnection1.TransferType = EnterpriseDT.Net.Ftp.FTPTransferType.BINARY
End If
ListBox1.Items.Add("Download: " & TextBox5.Text)
FtpConnection1.DownloadFile(TextBox4.Text & TextBox5.Text, TextBox5.Text)
FtpConnection1.TransferType = EnterpriseDT.Net.Ftp.FTPTransferType.BINARY
Catch ex As Exception
ListBox1.Items.Add("Err: " & ex.Message)
End Try