connection

问题 public string ConnectionString = string.Empty; In the line above, if the connection string is assigned as string.empty, then how will the connection string get its value? I dont understand what this means exactly. The code am reading through contains the following after the above statement: public DataSet GetData(SqlCommand cmd) { SqlConnection conn = new SqlConnection(this.ConnectionString); DataSet ds = new DataSet(); try { cmd.Connection = conn; SqlDataAdapter ad = new SqlDataAdapter(cmd);

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . I am able to successfully connect and create bond to my bluetooth low energy target device with android phone. However, if I disable my phone's bluetooth and turn it back on, I would like to reconnect back to my device. I have no problem with reconnecting, it is just that whenever I reconnect, it appears that I

问题 I have installed Oracle 11g on my system and i am able to connect to database using simple java program. ORACLE_USER = "user1" ORACLE_PASSWORD = "user1" ORACLE_HOST = "localhost" ORACLE_SID = "ORCL" ORACLE_PORT = "1521 " String connectionString = "jdbc:oracle:thin:@(description=(address=(host=" + ORACLE_HOST + ")(protocol=tcp)(port=" + ORACLE_PORT + "))(connect_data=(sid=" + ORACLE_SID + ")))"; Connection connection = DriverManager.getConnection(connectionString, ORACLE_USER,ORACLE_PASSWORD);

问题 I am here in an environment where there is a fairly old Oracle 8 (yes, eight) database installation and I need to connect to it from a fairly new Windows 7 installation. What kind of client do you suggest to use to accomplish this? First I tried Oracle SQL Developer (v4.0.2.15) but according to the Oracle Community, Oracle 8 is not supported by SQL Developer anymore since v1.2. And I do indeed have problems connecting to it. Thanks for any hints and suggestions (beside "upgrade the Oracle

问题 Unitll this morning I have experienced zero troubles while saving products in Magento. But, since an hour or 2, my products are just not being saved. Magento keeps loading (a popup stays with ‘Please wait’) and my product is never saved. With firebug, I found that the transaction is aborted. I used fiddler to trace the request, and got this: HTTP/1.1 504 Fiddler - Receive Failure Content-Type: text/html; charset=UTF-8 Connection: close “ReadResponse() failed: The server did not return a

问题 I'm able to post a status update to an IBM Connections community. However the status update is visible in the Recent Updates section and not in the Status Update section. I'm using the following URL: https://host.com/connections/opensocial/rest/activitystreams/urn:lsid:lconn.ibm.com:communities.community:5a0fdd28-127e-4bd0-969f-ef1254ecd9dc/@all/@public And the following JSON: {"object":{"url":"url","objectType":"note","id":"109876b6-f33b-3210-45bc-966a5d2cc096-rai1sgp","displayName":"Tracy

问题 Like we can get the number of busy connection in c3p0 by using method like dataSource.getNumBusyConnections() , the same way how can we do that in case of hikaricp? Can anyone provide all the related methods between c3p0 and hikaricp? Also what is the destroy (in c3p0) method equivalent in hikaricp? 回答1: Re: connections, see these wiki pages: JMX Monitoring (via console and programatically Using Codahale/Dropwizard Metrics HikariDataSource supports both close() and shutdown() methods, they

问题 Im developing an app which has download option Local Server in OnState:- From My Android Emulator,I Download Audio File and Save it in Distination Path(Local Server), Then I Played the Audio File,it Working Correct, Then My Problem Local Server in OffState:- While Downloading Local Server,(192.168.0.2/android/a1.mp3(Local Server Path))But it is OffState,it Still Show Loading Icon.. How Will Find Wheather Server in OffState or Onstate. Is there any delegate functions for connection fail with

问题 I am calling WCF method in for loop. I have couple of questions in this regard, 1) In this case if error occurs while its in the loop, where to re-open the connection? 2) Where to close the connection? MyProxy.DemoServiceClient wsDemo = new MyProxy.DemoServiceClient(); foreach (DataRow dataRow in dataTABLE.Rows) { Product product = new Product(); //Populate product using DataRow. try { wsDemo.CreateProduct(product); } catch (Exception exc) { } } 回答1: Abort and re-open the connection in the

问题 I'm trying to write a simple socket server for a project of mine, but it only accepts one request and then doesn't accept anything else from anywhere. public void run() { println("Socket server running..."); try { sock = new ServerSocket(20424); while(true) { clientSocket = sock.accept(); PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true); BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream())); String data; while((data = in.readLine()