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  • Trouble with go tour crawler exercise

    - by David Mason
    I'm going through the go tour and I feel like I have a pretty good understanding of the language except for concurrency. On slide 71 there is an exercise that asks the reader to parallelize a web crawler (and to make it not cover repeats but I haven't gotten there yet.) Here is what I have so far: func Crawl(url string, depth int, fetcher Fetcher, ch chan string) { if depth <= 0 { return } body, urls, err := fetcher.Fetch(url) if err != nil { ch <- fmt.Sprintln(err) return } ch <- fmt.Sprintf("found: %s %q\n", url, body) for _, u := range urls { go Crawl(u, depth-1, fetcher, ch) } } func main() { ch := make(chan string, 100) go Crawl("http://golang.org/", 4, fetcher, ch) for i := range ch { fmt.Println(i) } } The issue I have is where to put the close(ch) call. If I put a defer close(ch) somewhere in the Crawl method, then I end up writing to a closed channel in one of the spawned goroutines, since the method will finish execution before the spawned goroutines do. If I omit the call to close(ch), as is shown in my example code, the program deadlocks after all the goroutines finish executing but the main thread is still waiting on the channel in the for loop since the channel was never closed.

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  • Android Google cloud messaging - not certain what parameters I should put when creating the push notification

    - by Genadinik
    I am working on a php script to send the notification to the CGM server and I am working from this example: public function send_notification($registatoin_ids, $message) { // include config include_once './config.php'; // Set POST variables $url = 'https://android.googleapis.com/gcm/send'; $fields = array( 'registration_ids' => $registatoin_ids, 'data' => $message, ); $headers = array( 'Authorization: key=' . GOOGLE_API_KEY, 'Content-Type: application/json' ); // Open connection $ch = curl_init(); // Set the url, number of POST vars, POST data curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // Disabling SSL Certificate support temporarly curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields)); // Execute post $result = curl_exec($ch); if ($result === FALSE) { die('Curl failed: ' . curl_error($ch)); } // Close connection curl_close($ch); echo $result; } But I am not certain what the values should be for the variables: CURLOPT_POSTFIELDS , CURLOPT_SSL_VERIFYPEER , CURLOPT_RETURNTRANSFER , CURLOPT_HOST , CURLOPT_URL Would anyone happen to know what the values for these should be? Thank you!

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  • Curl download image only if not older than 2 days

    - by mark
    I want to download a image from a remote server only if it is not older than 2 days. I have the constructing as below now. Is this right? I want to now the last_modified data first before downloading. $ch = curl_init($file_source); // the file we are downloading curl_setopt($ch, CURLOPT_TIMEOUT, 20); curl_setopt($ch, CURLOPT_FILE, $wh); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); curl_setopt($ch, CURLOPT_FILETIME, true); curl_exec($ch); $headers = curl_getinfo($ch); $last_modified = $headers['filetime']; if ($last_modified != -1) { // unknown echo date("Y-m-d", $last_modified); //etc } curl_close($ch); fclose($wh);

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  • HTTP post using php and curl failing

    - by user2916484
    I am trying to send an XML file to an external system. I am using the below code for doing so, which I got over the internet. But I observed that when i put an echo on the xml variable, it does not show me the XML as a string, but it is parsing the xml and showing me the values. Same is happening when I am sending this to external system. Which is failing. Can you please tell me a way, in which the XML is not parsed and I can send the entire XML text as a string to external system? My code is below. <?php $xml = '<?xml version=\"1.0\" encoding="UTF-8" ?><shiporder><orderID>1234</orderID> <orderperson>John Smith</orderperson></shiporder>'; $xml2 = ''; $headers = array( "Content-type: text/xml", "Content-length: " . strlen($xml), "Connection: close", ); // give the path of the Third party site $url = "http://<server>:<port>/XMII/Illuminator?service=WSMessageListener&mode=WSMessageListenerServer&NAME=shiporder&IllumLoginName=<name>&IllumLoginPassword=<pswd>"; echo $xml; echo $url; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL,$url); //curl_setopt($ch, CURLOPT_MUTE, 1); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_TIMEOUT, 10); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch, CURLOPT_POSTFIELDS, $xml); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $output = curl_exec($ch); echo $output; curl_close($ch); ?> Regards, Gita

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  • Pointer reference and dereference

    - by ZhekakehZ
    I have the following code: #include <iostream> char ch[] = "abcd"; int main() { std::cout << (long)(int*)(ch+0) << ' ' << (long)(int*)(ch+1) << ' ' << (long)(int*)(ch+2) << ' ' << (long)(int*)(ch+3) << std::endl; std::cout << *(int*)(ch+0) << ' ' << *(int*)(ch+1) << ' ' << *(int*)(ch+2) << ' ' << *(int*)(ch+3) << std::endl; std::cout << int('abcd') << ' ' << int('bcd') << ' ' << int('cd') << ' ' << int('d') << std::endl; } My question is why the pointer of 'd' is 100 ? I think it should be: int('d') << 24; //plus some trash on stack after ch And the question is why the second and the third line of the stdout are different ? 6295640 6295641 6295642 6295643 1684234849 6579042 25699 100 1633837924 6447972 25444 100 Thanks.

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  • SFTP not supported error with PHP & cURL

    - by Bad Programmer
    I followed the advice from this Stack Overflow question thread, but I keep hitting a snag. I am receiving the following error message: Unsupported protocol: sftp Here is my code: $ch = curl_init(); if(!$ch) { $error = curl_error($ch); die("cURL session could not be initiated. ERROR: $error.""); } $fp = fopen($docname, 'r'); if(!$fp) { $error = curl_error($ch); die("$docname could not be read."); } curl_setopt($ch, CURLOPT_URL, "sftp://$user_name:$user_pass@$server:22/$docname"); curl_setopt($ch, CURLOPT_UPLOAD, 1); curl_setopt($ch, CURLOPT_PROTOCOLS, CURLPROTO_SFTP); curl_setopt($ch, CURLOPT_INFILE, $fp); curl_setopt($ch, CURLOPT_INFILESIZE, filesize($docname)); //this is where I get the failure $exec = curl_exec ($ch); if(!$exec) { $error = curl_error($ch); die("File $docname could not be uploaded. ERROR: $error."); } curl_close ($ch); I used the curl_version() function to see my curl information, and found that sftp doesn't seem to be in the array of supported protocols: [version_number] => 462597 [age] => 2 [features] => 1597 [ssl_version_number] => 0 [version] => 7.15.5 [host] => x86_64-redhat-linux-gnu [ssl_version] => OpenSSL/0.9.8b [libz_version] => 1.2.3 [protocols] => Array ( [0] => tftp [1] => ftp [2] => telnet [3] => dict [4] => ldap [5] => http [6] => file [7] => https [8] => ftps ) Is this a matter of my version of cURL being outdated, or is the SFTP protocol simply not supported at all? Any advice is greatly appreciated.

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  • Unable to determine the provider name for connection of type 'System.Data.SqlServerCe.SqlCeConnectio

    - by Hobbes1312
    Hi, i am using the Ado.Net Entity Framework with Code Only (Tutorial at: ADO.NET team blog) and i want to be as much database independent as possible. In my first approach i just want to go for Sql Express and Sql Compact databases. With Sql Express everthing works fine but with Sql Compact i get the exception mentioned in my question. Does anybody knows if it is possible to connect to Sql Compact with the Code Only approach? (with a generated .edmx file for a Sql Compact database everthing works fine, but i want to use code only!) Here is some code: My Class which is building the DataContext: public class DataContextBuilder : IDataContextBuilder { private readonly DbProviderFactory _factory; public DataContextBuilder(DbProviderFactory factory) { _factory = factory; } #region Implementation of IDataContextBuilder public IDataContext CreateDataContext(string connectionString) { var builder = new ContextBuilder<DataContext>(); RegisterConfiguration(builder); var connection = _factory.CreateConnection(); connection.ConnectionString = connectionString; var ctx = builder.Create(connection); return ctx; } #endregion private void RegisterConfiguration(ContextBuilder<DataContext> builder) { builder.Configurations.Add(new PersonConfiguration()); } } The line var ctx = builder.Create(connection); is throwing the exception. The IDataContext is just a simple Interface for the ObjectContext: public interface IDataContext { int SaveChanges(); IObjectSet<Person> PersonSet { get; } } My connection string is configured in the app.config: <connectionStrings> <add name="CompactConnection" connectionString="|DataDirectory|\Test.sdf" providerName="System.Data.SqlServerCe.3.5" /> </connectionStrings> And the build action is started with var cn = ConfigurationManager.ConnectionStrings["CompactConnection"]; var factory = DbProviderFactories.GetFactory(cn.ProviderName); var builder = new DataContextBuilder(factory); var context = builder.CreateDataContext(cn.ConnectionString);

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  • Backup and Restore a SQLCE .sdf database

    - by Ruben Trancoso
    My application needs to backup and restore .sdf files. There is a single dataSet the the whole application and some bindngSource and table adapters on forms using this same dataset. Just for a sake of test I tryied to copy the .sdf in runtime for a backup folder and back to restore it and I got my application not finding the file like it was not there anymore. How should I manage connections to open and close the database since the dataSet do it automaticaly at begin and end of my application?

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  • Conversion from YUV444 to RGB888

    - by Abhi
    I am new in this field and i desperately need some guidance from u all. I have to support yuv444 to rgb 888 in display driver module. There is one test which i have done for yv12 → rgb565 in wince 6.0 r3 which is mentioned below. //------------------------------------------------------------------------------ // // Function: PP_CSC_YV12_RGB565Test // // This function tests the Post-processor // // // // Parameters: // uiMsg // [in] Ignored. // // tpParam // [in] Ignored. // // lpFTE // [in] Ignored. // // Returns: // Specifies if the test passed (TPR_PASS), failed (TPR_FAIL), or was // skipped (TPR_SKIP). // // TESTPROCAPI PP_CSC_YV12_RGB565Test(UINT uMsg, TPPARAM tpParam, LPFUNCTION_TABLE_ENTRY lpFTE) { LogEntry(L"%d : In %s Function \r\n",++abhineet,__WFUNCTION__); UNREFERENCED_PARAMETER(tpParam); UNREFERENCED_PARAMETER(lpFTE); DWORD dwResult= TPR_SKIP; ppConfigData ppData; DWORD iInputBytesPerFrame, iOutputBytesPerFrame; UINT32 iInputStride, iOutputStride; UINT16 iOutputWidth, iOutputHeight, iOutputBPP; UINT16 iInputWidth, iInputHeight, iInputBPP; int iOption; PP_TEST_FUNCTION_ENTRY(); // Validate that the shell wants the test to run if (uMsg != TPM_EXECUTE) { return TPR_NOT_HANDLED; } PPTestInit(); iInputWidth = PP_TEST_FRAME_WIDTH; //116 iInputHeight = PP_TEST_FRAME_HEIGHT; //160 iInputBPP = PP_TEST_FRAME_BPP; //2 iInputStride = iInputWidth * 3/2; // YV12 is 12 bits per pixel iOutputWidth = PP_TEST_FRAME_WIDTH; iOutputHeight = PP_TEST_FRAME_HEIGHT; iOutputBPP = PP_TEST_FRAME_BPP; iOutputStride = iOutputWidth * iOutputBPP; // Allocate buffers for input and output frames iInputBytesPerFrame = iInputStride * iInputHeight; pInputFrameVirtAddr = (UINT32 *) AllocPhysMem(iInputBytesPerFrame, PAGE_EXECUTE_READWRITE, 0, 0, (ULONG *) &pInputFramePhysAddr); iOutputBytesPerFrame = iOutputStride * iOutputHeight; pOutputFrameVirtAddr = (UINT32 *) AllocPhysMem(iOutputBytesPerFrame, PAGE_EXECUTE_READWRITE, 0, 0, (ULONG *) &pOutputFramePhysAddr); if ((NULL == pInputFrameVirtAddr) || (NULL == pOutputFrameVirtAddr)) { dwResult = TPR_FAIL; goto PP_CSC_YV12_RGB565Test_clean_up; } //----------------------------- // Configure PP //----------------------------- // Set up post-processing configuration data memset(&ppData, 0 , sizeof(ppData)); // Set up input format and data width ppData.inputIDMAChannel.FrameFormat = icFormat_YUV420; ppData.inputIDMAChannel.DataWidth = icDataWidth_8BPP; // dummy value for YUV ppData.inputIDMAChannel.PixelFormat.component0_offset = 0; ppData.inputIDMAChannel.PixelFormat.component1_offset = 8; ppData.inputIDMAChannel.PixelFormat.component2_offset = 16; ppData.inputIDMAChannel.PixelFormat.component3_offset = 24; ppData.inputIDMAChannel.PixelFormat.component0_width = 8-1; ppData.inputIDMAChannel.PixelFormat.component1_width = 8-1; ppData.inputIDMAChannel.PixelFormat.component2_width = 8-1; ppData.inputIDMAChannel.PixelFormat.component3_width = 8-1; ppData.inputIDMAChannel.FrameSize.height = iInputHeight; ppData.inputIDMAChannel.FrameSize.width = iInputWidth; ppData.inputIDMAChannel.LineStride = iInputWidth; // Set up output format and data width ppData.outputIDMAChannel.FrameFormat = icFormat_RGB; ppData.outputIDMAChannel.DataWidth = icDataWidth_16BPP; ppData.outputIDMAChannel.PixelFormat.component0_offset = RGB_COMPONET0_OFFSET; ppData.outputIDMAChannel.PixelFormat.component1_offset = RGB_COMPONET1_OFFSET; ppData.outputIDMAChannel.PixelFormat.component2_offset = RGB_COMPONET2_OFFSET; ppData.outputIDMAChannel.PixelFormat.component3_offset = RGB_COMPONET3_OFFSET; ppData.outputIDMAChannel.PixelFormat.component0_width = RGB_COMPONET0_WIDTH -1; ppData.outputIDMAChannel.PixelFormat.component1_width = RGB_COMPONET1_WIDTH -1; ppData.outputIDMAChannel.PixelFormat.component2_width = RGB_COMPONET2_WIDTH -1; ppData.outputIDMAChannel.PixelFormat.component3_width = RGB_COMPONET3_WIDTH; ppData.outputIDMAChannel.FrameSize.height = iOutputHeight; ppData.outputIDMAChannel.FrameSize.width = iOutputWidth; ppData.outputIDMAChannel.LineStride = iOutputStride; // Set up post-processing channel CSC parameters // based on input and output ppData.CSCEquation = CSCY2R_A1; ppData.inputIDMAChannel.UBufOffset = iInputHeight * iInputWidth + (iInputHeight * iInputWidth)/4; ppData.inputIDMAChannel.VBufOffset = iInputHeight * iInputWidth; ppData.FlipRot.verticalFlip = FALSE; ppData.FlipRot.horizontalFlip = FALSE; ppData.FlipRot.rotate90 = FALSE; if (!PPConfigure(hPP, &ppData)) { dwResult = TPR_FAIL; goto PP_CSC_YV12_RGB565Test_clean_up; } //----------------------------- // Read first input buffer //----------------------------- // Read Input file for new frame if (!ReadImage(PP_TEST_YV12_FILENAME,pInputFrameVirtAddr,iInputBytesPerFrame,PP_TEST_FRAME_WIDTH,PP_TEST_FRAME_HEIGHT)) { g_pKato->Log(PP_ZONE_ERROR, (TEXT("fail to ReadImage()!\r\n"))); dwResult = TPR_FAIL; goto PP_CSC_YV12_RGB565Test_clean_up; } //----------------------------- // Start PP //----------------------------- if (!PPStart(hPP)) { dwResult = TPR_FAIL; goto PP_CSC_YV12_RGB565Test_clean_up; } if (!PPInterruptEnable(hPP, FRAME_INTERRUPT)) { dwResult = TPR_FAIL; goto PP_CSC_YV12_RGB565Test_clean_up; } //----------------------------- // Queue Input/Output Buffers //----------------------------- UINT32 starttime = GetTickCount(); // Add input and output buffers to PP queues. if (!PPAddInputBuffer(hPP, (UINT32) pInputFramePhysAddr)) { dwResult = TPR_FAIL; goto PP_CSC_YV12_RGB565Test_clean_up; } if (!PPAddOutputBuffer(hPP,(UINT32) pOutputFramePhysAddr)) { dwResult = TPR_FAIL; goto PP_CSC_YV12_RGB565Test_clean_up; } if (!PPWaitForNotBusy(hPP, FRAME_INTERRUPT)) { dwResult = TPR_FAIL; goto PP_CSC_YV12_RGB565Test_clean_up; } RETAILMSG(1, (TEXT("===========FLIP TIME: %dms====== \r\n"), GetTickCount()-starttime)); //----------------------------- // Stop PP //----------------------------- if (!PPStop(hPP)) { dwResult = TPR_FAIL; goto PP_CSC_YV12_RGB565Test_clean_up; } if (!PPClearBuffers(hPP)) { dwResult = TPR_FAIL; goto PP_CSC_YV12_RGB565Test_clean_up; } ShowRGBContent((UINT8 *) pOutputFrameVirtAddr, PP_TEST_FRAME_WIDTH, PP_TEST_FRAME_HEIGHT); iOption = MessageBox( NULL,TEXT("After CSC(YV12->RGB565). Is it correct?"),TEXT("Test result"),MB_YESNO ); if ( IDNO == iOption ) { dwResult = TPR_FAIL; } else { dwResult = TPR_PASS; } PP_CSC_YV12_RGB565Test_clean_up: if(NULL != pInputFrameVirtAddr) { FreePhysMem( pInputFrameVirtAddr ); pInputFrameVirtAddr = NULL; } if(NULL != pOutputFrameVirtAddr) { FreePhysMem( pOutputFrameVirtAddr ); pOutputFrameVirtAddr = NULL; } PPTestDeInit(); LogEntry(L"%d :Out %s Function \r\n",++abhineet,__WFUNCTION__); return dwResult; } The below is the flow for this function. It tells the start and end of this test. *** vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv *** TEST STARTING *** *** Test Name: PP CSC(YV12-RGB565) Test *** Test ID: 500 *** Library Path: pp_test.dll *** Command Line: *** Kernel Mode: Yes *** Random Seed: 24421 *** Thread Count: 0 *** vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv *******Abhineet-PPTEST : 338 : In ShellProc Function *******Abhineet-PPTEST : 339 : In Debug Function PP_TEST: ShellProc(SPM_BEGIN_TEST, ...) called *******Abhineet-PPTEST : 340 :Out Debug Function BEGIN TEST: "PP CSC(YV12-RGB565) Test", Threads=0, Seed=24421 *******Abhineet-PPTEST : 341 :Out ShellProc Function *******Abhineet-PPTEST : 342 : In PP_CSC_YV12_RGB565Test Function PP_CSC_YV12_RGB565Test *******Abhineet-PPTEST : 343 : In PPTestInit Function *******Abhineet-PPTEST : 344 : In GetPanelDimensions Function *******Abhineet-PPTEST : 345 :Out GetPanelDimensions Function GetPanelDimensions: width=1024 height=768 bpp=16 *******Abhineet-PPTEST : 346 :Out PPTestInit Function *******Abhineet-PPTEST : 347 : In ReadImage Function RELFSD: Opening file flags_112x160.yv12 from desktop *******Abhineet-PPTEST : 348 :Out ReadImage Function ===========FLIP TIME: 1ms====== *******Abhineet-PPTEST : 349 : In ShowRGBContent Function *******Abhineet-PPTEST : 350 :Out ShowRGBContent Function *******Abhineet-PPTEST : 351 : In PPTestDeInit Function *******Abhineet-PPTEST : 352 :Out PPTestDeInit Function *******Abhineet-PPTEST : 353 :Out PP_CSC_YV12_RGB565Test Function *******Abhineet-PPTEST : 354 : In DllMain Function *******Abhineet-PPTEST : 355 :Out DllMain Function *******Abhineet-PPTEST : 356 : In ShellProc Function *******Abhineet-PPTEST : 357 : In Debug Function PP_TEST: ShellProc(SPM_END_TEST, ...) called *******Abhineet-PPTEST : 358 :Out Debug Function END TEST: "PP CSC(YV12-RGB565) Test", PASSED, Time=6.007 *******Abhineet-PPTEST : 359 :Out ShellProc Function *** ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ *** TEST COMPLETED *** *** Test Name: PP CSC(YV12-RGB565) Test *** Test ID: 500 *** Library Path: pp_test.dll *** Command Line: *** Kernel Mode: Yes *** Result: Passed *** Random Seed: 24421 *** Thread Count: 1 *** Execution Time: 0:00:06.007 *** ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Please help me out to make changes to the above function for yuv444-rgb888.

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  • GDI & Hardware Cursor

    - by Abhi
    Dear All I am working on iMX51 project. I want to know what does GDI and hardware cursor means? The RTOS which i am using is WINCE 6.0 r3. We are actually looking to speed up the GDI and to implement the hardware cursor. So for that i want to know abt the GDI and the Hardware Cursor. I am also referring WC600_MX51_SDK_0912_ReferenceManual.pdf & MCIMX51RM.pdf and in these pdf i came to know that the hardware cursor is related to Display Processor module . But still i am unclear, what exactly does speed up of GDI means & Hardware cursor means? Please guide me the correct step to how to achieve my target....

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  • How to programmatically open the application menu in a .NET CF 2.0 application

    - by PabloG
    I'm developing an C# / .NET CF 2.0 application: it's supposed to be used with the touchscreen deactivated, then, I'm looking for a way to programmatically open the application menu (not the Windows menu). Looking here I tried to adapt the code to the .NET CF 2 but it doesn't work (no error messages neither) public const int WM_SYSCOMMAND = 0x0112; public const int SC_KEYMENU = 0xF100; private void cmdMenu_Click(object sender, EventArgs e) { Message msg = Message.Create(this.Handle, WM_SYSCOMMAND, new IntPtr(SC_KEYMENU), IntPtr.Zero); MessageWindow.SendMessage(ref msg); } Any ideas? TIA, Pablo After Hans answer, I edited the code to Message msg = Message.Create(this.Handle, WM_SYSCOMMAND, new IntPtr(SC_KEYMENU), new IntPtr(115)); // 's' key and added a submenu option as &Search, but it doesn't make any difference

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  • running VisualStudio CF3.5 apps on WINCE

    - by marc
    Hi, I am trying to write a program for a chinese PNA device with wince 5.0. But everytime I write a simple program in VS8 with C# and 'deploy' it to my device it just doesn't run. First it complains about disposing an object call menu, although I don't want an menu but VS8 just creates one for me. If I delete the menu from the form the program gives an exception. I installed a program call MIOPocket on the PNA with has powertoys some games and MS media player. It also creates a directory .net framework 3.5 so I known 3.5 is installed and must be working. But I think I am missing something. I am also not sure what to choice as target device ; windows mobile or WINCE. If I click the .exe file under win7 it works but under wince its a no go. Maybe someone has a clue what is going wrong ?

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  • MissingMethodException ( Can`t find PInvoke DLL 'sqlceme30.dll ' ) for Windows Mobile

    - by anyinfonet
    Hello. I have developed a win mobile (v5.0) application and I use ONLY 1 database SQLITE with these references: System.Data.SQLite.dll (assembly version & product version : 1.0.65.0); SQLite.Interop.065.DLL (product version : 1.0 and is a c++ lib for first dll ). After 5 weeks of using of this application, I get today a weird exception and I dont understand what it is? Exception is: MissingMethodException Can`t find PInvoke DLL 'sqlceme30.dll ' at System.Data.SqlServerCe.SqlCeCommand.ReleaseNativeInterfaces() at System.Data.SqlServerCe.SqlCeCommand.Dispose(Boolean disposing) ...... What`s wrong? Anyone know about this to explain me please? By the way : until now I delevoped 3-4 applications (1 year ago )using these references and everything worked fine.

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  • WebSharingAppDemo-CEProviderEndToEnd Queries peerProvider for NeedsScope before any files are batche

    - by Don
    I'm building an application based on the WebSharingAppDemo-CEProviderEndToEnd. When I deploy the server portion on a server, the code gives the error "The path is not valid. Check the directory for the database." during the call to NeedsScope() in the CeWebSyncService.cs file. Obviously the server can't access the client's sdf but what is supposed to happen to make this work? The app uses batching to send the data and the batches have to be marshalled across to the temp directory but this problem is occurring before any files have been batched over. There is nothing for the server to look at to determine whether the peerProivider needs scope. What am I missing? public bool NeedsScope() { Log("NeedsSchema: {0}", this.peerProvider.Connection.ConnectionString); SqlCeSyncScopeProvisioning prov = new SqlCeSyncScopeProvisioning(); return !prov.ScopeExists(this.peerProvider.ScopeName, (SqlCeConnection)this.peerProvider.Connection); }

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  • SQL Compact error: Unable to load DLL 'sqlceme35.dll'. The specified module could not be found

    - by Ciaran Bruen
    Hi - I'm developing a Winforms application using Visual Studio 2008 C# that uses a SQL compact 3.5 database on the client. The client will most likely be 32 bit XP or Vista machines. I'm using a standard Windows Installer project that creates an msi file and setup.exe to install the app on a client machine. I'm new to SQL compact so I haven't had to distribute a client database like this before now. When I run the setup.exe (on new Windows XP 32 bit with SP2 and IE 7) it installs fine but when I run the app I get the error below: Unable to load DLL 'sqlceme35.dll'. The specified module could not be found I spent a few hours searching this error already but all I can find are issues relating to installing on 64 bit Windows, none relating to normal 32 bit that I'm using. The install app copies the all the dependant files that it found into the specified install directory, including the System.Data.SqlServerCe.dll file (assembly version 3.5.1.0). The database file is in a directory called 'data' off the application directory, and the connection string for it is <add name="Tickets.ieOutlet.Properties.Settings.TicketsLocalConnectionString" connectionString="Data Source=|DataDirectory|\data\TicketsLocal.sdf" providerName="Microsoft.SqlServerCe.Client.3.5" /> Some questions I have: should the app be able to find the dll if it's in the same directory i.e. local to the app, or do I need to install it in the GAC? (If so cam I use the Windows Installer to install a dll in the GAC?) is there anything else I need to distribute with the app in order to use a Sql Compact database? there are other dlls also such as MS interop for exporting data to Excel on the client. Do these need to be installed in the GAC or will locating them in the application directory suffice? TIA, Ciaran.

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  • Dataset and SQLCe in .net 4

    - by Tyler Edwards
    I'm trying to build a SQLCe table structure dynamically using a dataset as the temporary table structure... Is there a SqlConnection string that will work with SqlCe? There used to be a SqlCeConnection...but I don't find that in the 4.0 framework? Has something replaced this? If the answer is L2S or Entity Framework...can I add columns to SqlCe tables at runtime? If so...how?

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  • Format date from SQLCE to display in DataGridView

    - by Ruben Trancoso
    hi folks, I have a DataGridView bound to a table from a .sdf database through a BindSource. The date column display dates like "d/M/yyyy HH:mm:ss". e.: "27/2/1971 00:00:00". I want to make it display just "27/02/1971" in its place. I tried to apply DataGridViewCellStyle {format=dd/MM/yyyy} but nothing happens, event with other pre-built formats. On the the other side, there's a Form with a MasketTextBox with a "dd/MM/yyyy" mask to its input that is bound to the same column and uses a Parse and a Format event handler before display and send it to the db. Binding dataNascimentoBinding = new Binding("Text", this.source, "Nascimento", true); dataNascimentoBinding.Format += new ConvertEventHandler(Util.formatDateConvertEventHandler); dataNascimentoBinding.Parse += new ConvertEventHandler(Util.parseDateConvertEventHandler); this.dataNascimentoTxt.DataBindings.Add(dataNascimentoBinding); public static string convertDateString2DateString(string dateString, string inputFormat, string outputFormat ) { DateTime date = DateTime.ParseExact(dateString, inputFormat, DateTimeFormatInfo.InvariantInfo); return String.Format("{0:" + outputFormat + "}", date); } public static void formatDateConvertEventHandler(object sender, ConvertEventArgs e) { if (e.DesiredType != typeof(string)) return; if (e.Value.GetType() != typeof(string)) return; String dateString = (string)e.Value; e.Value = convertDateString2DateString(dateString, "d/M/yyyy HH:mm:ss", "dd/MM/yyyy"); } public static void parseDateConvertEventHandler(object sender, ConvertEventArgs e) { if (e.DesiredType != typeof(string)) return; if (e.Value.GetType() != typeof(string)) return; string value = (string)e.Value; try { e.Value = DateTime.ParseExact(value, "dd/MM/yyyy", DateTimeFormatInfo.InvariantInfo); } catch { return; } } Like you can see by the code it was expexted that Date coming from SQL would be a DateTime value as is its column, but my eventHandler is receiving a string instead. Likewise, the result date for parse should be a datetime but its a string also. I'm puzzled dealing with this datetime column.

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  • sqlce in Xenocode

    - by jankhana
    I'm using Xenocode in my application so that it works without a .NET framework. I'm using Xenocode Virtual Application Studio(version 6.1). Everything works fine except the .sdf file which I have embedded inside the application directory. actually in the application the instead of SQL server i have used SQL Compact edition(3.5) and i have included the reqired dll . All the files are working except the ".sdf" file. Any idea y is that so? Is it because the ".sdf" file is being used when the xenocode after snapshot was taken? if so what is the solution for that? i cannot avoid using it because Xenocode's after snapshot will not recognise the application if it's not running and if I run the application ".sdf" file will be used. Anyway to solve this?

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  • sqlce in Xenocode

    - by user184204
    Please direct answers to : http://stackoverflow.com/questions/1518867/sqlce-in-xenocode This question is an accidental duplicate I'm using Xenocode in my application so that it works without a .NET framework. I'm using Xenocode Virtual Application Studio(version 6.1). Everything works fine except the .sdf file which I have embedded inside the application directory. actually in the application the instead of SQL server i have used SQL Compact edition(3.5) and i have included the reqired dll . All the files are working except the ".sdf" file. Any idea y is that so? Is it because the ".sdf" file is being used when the xenocode after snapshot was taken? if so what is the solution for that? i cannot avoid using it because Xenocode's after snapshot will not recognise the application if it's not running and if I run the application ".sdf" file will be used. Anyway to solve this?

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  • How do I free SQLServerCE's COM instance from the current running process?

    - by David Thornley
    It's been a while since I touched COM so be nice ;) This is under WindowsCE 5.0 with SQLServerCE 2.0. After calling this to load SQLServerCE 2.0 : - IDBInitialize *pIDBInitialize = NULL; CoCreateInstance(CLSID_SQLSERVERCE_2_0, NULL, CLSCTX_INPROC_SERVER, IID_IDBInitialize, (void**)&pIDBInitialize); Module load occurs for SSCE20.dll which obviously loads the SQLServerCE engine into the process space. What I don't understand is if I do this immediately after :- pIDBInitialize->Release(); I don't see a dll module unload, so that SSCE20.dll (and friends) are still loaded into my process. Now I tried CoFreeUnusedLibraries() which I figure forces COM to purge any unused libraries, but it doesn't seem to do the trick. At runtime I want to be able to completely unload the SQLServerCE 2.0 dll from the process to streamline an upgrade to 3.5SP1. I suspect this has something to do with the shared dll model that Microsoft use under WindowsCE... but, I might be wrong :) Thanks in advance, David.

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  • Connecting to a SQL Server Compact Edition (.sdf) from an MFC application

    - by Hazerd
    Hey ! I'm building an MFC app in Visual Studio 2008 which classifies textures and I need some sort of lightweight database to hold the characteristics (just some doubles and strings) which can be: -carried around with the app on different computers; -be able to perform queries on it from the app (searches , updates ,inserts ,etc); Currently I'm looking into SQL compact edition because it was very easy to create from Visual Studio ( I also need only one table) but I having a hard time connecting and updating the db from C++. This is what I've found on msdn regarding C++ and SQLCE: public: void createSqlCeConnection(){ SqlCeConnection* myConnection = new SqlCeConnection(); myConnection->ConnectionString = "DataSource = blabla.sdf"; MessageBox::Show(String::Format( S"Connection State: {0}", __box(myConnection->State))); } Unfortunately my experience with .net apps is pretty limited. Hopefully you bright minds could tell me if I'm on the right path and what links and includes should I add for this to work with an C++ MFC projects. Thanks !

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  • Get PocketC File Handle Int?

    - by Nathan Campos
    I'm now taking a look at the PocketC powerful tool, but there is an fileopen function, that generates a integer called filehandle, that is used for most of the File I/O operations of PocketC, than I want to know how to discover the int filehandle from the function? Here is my example function that I'm using at my program: fileopen("\test.txt", 0, 0x00000000); Description of int filehandle: Integer used for file operations, used as a pointer to the fileopen instruction.

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