Exemplo n.º 1
0
        /// <summary>
        /// 异步上传,还没写好
        /// </summary>
        /// <param name="target">目标Uri</param>
        /// <param name="fileName">文件名</param>
        public void UploadAsync(Uri target, string fileName)
        {
            // Create a Uri instance with the specified URI string.
            // If the URI is not correctly formed, the Uri constructor
            // will throw an exception.
            ManualResetEvent waitObject;

            FtpState      state   = new FtpState();
            FtpWebRequest request = (FtpWebRequest)WebRequest.Create(target);

            request.Method = WebRequestMethods.Ftp.UploadFile;

            // This example uses anonymous logon.
            // The request is anonymous by default; the credential does not have to be specified.
            // The example specifies the credential only to
            // control how actions are logged on the server.

            request.Credentials = new NetworkCredential("anonymous", "*****@*****.**");

            // Store the request in the object that we pass into the
            // asynchronous operations.
            state.Request  = request;
            state.FileName = fileName;

            // Get the event to wait on.
            waitObject = state.OperationComplete;

            // Asynchronously get the stream for the file contents.
            request.BeginGetRequestStream(
                new AsyncCallback(EndGetStreamCallback),
                state
                );

            // Block the current thread until all operations are complete.
            waitObject.WaitOne();

            // The operations either completed or threw an exception.
            if (state.OperationException != null)
            {
                throw state.OperationException;
            }
            else
            {
                Console.WriteLine("The operation completed - {0}", state.StatusDescription);
            }
        }
Exemplo n.º 2
0
        private void EndGetStreamCallback(IAsyncResult ar)
        {
            FtpState state = (FtpState)ar.AsyncState;

            Stream requestStream = null;

            // End the asynchronous call to get the request stream.
            try
            {
                requestStream = state.Request.EndGetRequestStream(ar);
                // Copy the file contents to the request stream.
                const int  bufferLength = 2048;
                byte[]     buffer       = new byte[bufferLength];
                int        count        = 0;
                int        readBytes    = 0;
                FileStream stream       = File.OpenRead(state.FileName);
                do
                {
                    readBytes = stream.Read(buffer, 0, bufferLength);
                    requestStream.Write(buffer, 0, readBytes);
                    count += readBytes;
                }while (readBytes != 0);

                // IMPORTANT: Close the request stream before sending the request.
                requestStream.Close();
                // Asynchronously get the response to the upload request.
                state.Request.BeginGetResponse(
                    new AsyncCallback(EndGetResponseCallback),
                    state
                    );
            }
            // Return exceptions to the main application thread.
            catch (Exception e)
            {
                Console.WriteLine("Could not get the request stream.");
                state.OperationException = e;
                state.OperationComplete.Set();
                return;
            }
        }
Exemplo n.º 3
0
        // The EndGetResponseCallback method
        // completes a call to BeginGetResponse.
        private static void EndGetResponseCallback(IAsyncResult ar)
        {
            FtpState       state    = (FtpState)ar.AsyncState;
            FtpWebResponse response = null;

            try
            {
                response = (FtpWebResponse)state.Request.EndGetResponse(ar);
                response.Close();
                state.StatusDescription = response.StatusDescription;
                // Signal the main application thread that
                // the operation is complete.
                state.OperationComplete.Set();
            }
            // Return exceptions to the main application thread.
            catch (Exception e)
            {
                Console.WriteLine("Error getting response.");
                state.OperationException = e;
                state.OperationComplete.Set();
            }
        }