Use WebClient to upload a file [ZT]

Private   Bool Uploadfile ( String Source, String TargetUrl, networkcredential)
{
Filestream streamsource;
Stream streamtarget;
WebClient Client =   New WebClient ();
Client. Credentials = Networkcredential;
Try
{
Streamsource=File. openread (source );
}
Catch (Exception ERR)
{
Return False;
}
Try
{
Uri URL= NewUri (TargetUrl );
Streamtarget=Client. openwrite (URL,"Put");
}
Catch (Exception ERR)
{
Return False;
}
Try
{
Long Num =   0 ;
Int Count =   0 ;
Byte [] Buffer =   New   Byte [ 512 ];
While (Num < Streamsource. length)
{
Count = Streamsource. Read (buffer, 0 , 512 );
Streamtarget. Write (buffer, 0 , Count );
Num + = Count;

}
Streamtarget. Close ();
Streamsource. Close ();
Return   True ;
}
Catch (Exception ERR)
{
Return False;
}
}