public static bool FileExist(
	Uri filename,
	string username,
	string password,
	string proxyAddress,
	bool passive,
	int port,
	bool keepAlive
)

Public Shared Function FileExist ( 
	filename As Uri,
	username As String,
	password As String,
	proxyAddress As String,
	passive As Boolean,
	port As Integer,
	keepAlive As Boolean
) As Boolean

Parameters

filename

Type: SystemUri
Uri of the file to check (es: "ftp://www.domain.com/chekme.txt")

username

Type: SystemString
FTP access username

password

Type: SystemString
FTP access password

proxyAddress

Type: SystemString
FTP proxy (string.empty if unknown or not used)

passive

Type: SystemBoolean
FTP passive mode enabling (false if unknown or not used)

port

Type: SystemInt32
FTP access port (usually 21)

keepAlive

Type: SystemBoolean
Define if you need to keep alive the connection after the process (usually false)

Return Value

Reference