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• What is a good way of checking to see if a particular user may access a particular file?

  - by Rising Star

  I am working on application which runs as a special unprivileged user. I would like to be able to easily check to see if the user can read a given file. It seems like this should be easy, even when I go into the file in Windows Explorer and see that the read permission is checked, it sometimes seems that there is still something preventing the user from reading the file (such as a parent directory that the user cannot browse) when I try to read it as the user programmatically. The user has no console logon permission, so I can't just log in as the user and try to read the file. So... If I want to know, "Does UserBob have access to file c:\specialPath\specialFile, what is an easy way to find out? BTW, my environment is Windows Server 2003.

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• Accidentally deletion of classes from XCode 3.2.5

  - by Alok Srivastava

  Accidentally my classes folder is deleted with reference from xcode(project). i try to recover them from trash but it was not present in trash. how ever i used svn for backup. but after check out the whole project when i try to run the project then it gives ann error 2012-06-05 09:46:59.651 Lisnx[527:207] Unknown class LisnxAppDelegate in Interface Builder file. 2012-06-05 09:46:59.652 Lisnx[527:207] Unknown class LisnxViewController in Interface Builder file. 2012-06-05 09:46:59.656 Lisnx[527:207] * Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key viewController.'

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• What to Expect in Rails 4

  - by mikhailov

  Rails 4 is nearly there, we should be ready before it released. Most developers are trying hard to keep their application on the edge. Must see resources: 1) @sikachu talk: What to Expect in Rails 4.0 - YouTube 2) Rails Guides release notes: http://edgeguides.rubyonrails.org/4_0_release_notes.html There is a mix of all major changes down here: ActionMailer changes excerpt: Asynchronously send messages via the Rails Raise an ActionView::MissingTemplate exception when no implicit template could be found ActionPack changes excerpt Added controller-level etag additions that will be part of the action etag computation Add automatic template digests to all CacheHelper#cache calls (originally spiked in the cache_digests plugin) Add Routing Concerns to declare common routes that can be reused inside others resources and routes Added ActionController::Live. Mix it in to your controller and you can stream data to the client live truncate now always returns an escaped HTML-safe string. The option :escape can be used as false to not escape the result Added ActionDispatch::SSL middleware that when included force all the requests to be under HTTPS protocol ActiveModel changes excerpt AM::Validation#validates ability to pass custom exception to :strict option Changed `AM::Serializers::JSON.include_root_in_json' default value to false. Now, AM Serializers and AR objects have the same default behaviour Added ActiveModel::Model, a mixin to make Ruby objects work with AP out of box Trim down Active Model API by removing valid? and errors.full_messages ActiveRecord changes excerpt Use native mysqldump command instead of structure_dump method when dumping the database structure to a sql file. Attribute predicate methods, such as article.title?, will now raise ActiveModel::MissingAttributeError if the attribute being queried for truthiness was not read from the database, instead of just returning false ActiveRecord::SessionStore has been extracted from Active Record as activerecord-session_store gem. Please read the README.md file on the gem for the usage Fix reset_counters when there are multiple belongs_to association with the same foreign key and one of them have a counter cache Raise ArgumentError if list of attributes to change is empty in update_all Add Relation#load. This method explicitly loads the records and then returns self Deprecated most of the 'dynamic finder' methods. All dynamic methods except for find_by_... and find_by_...! are deprecated Added ability to ActiveRecord::Relation#from to accept other ActiveRecord::Relation objects Remove IdentityMap ActiveSupport changes excerpt ERB::Util.html_escape now escapes single quotes ActiveSupport::Callbacks: deprecate monkey patch of object callbacks Replace deprecated memcache-client gem with dalli in ActiveSupport::Cache::MemCacheStore Object#try will now return nil instead of raise a NoMethodError if the receiving object does not implement the method, but you can still get the old behavior by using the new Object#try! Object#try can't call private methods Add ActiveSupport::Deprecations.behavior = :silence to completely ignore Rails runtime deprecations What are the most important changes for you?

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• C++ Why am I unable to use an enum declared globally outside of the class it was declared in?

  - by VGambit

  Right now, my project has two classes and a main. Since the two classes inherit from each other, they are both using forward declarations. In the first object, right underneath the #include statement, I initialize two enums, before the class definition. I can use both enums just fine inside that class. However, if I try to use those enums in the other class, which inherits from the first one, I get an error saying the enum has not been declared. If I try to redefine the enum in the second class, I get a redefinition error. I have even tried using a trick I just read about, and putting each enum in its own namespace; that didn't change anything.

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• Using WPF class in a web application, problem with hosting permission

  - by tanathos

  I'm developing a DLL that uses WPF classes to make image manipulation. It works fine in my local environment, but when I try to use it in an hosted web site I retrieve this error: Request for the permission of type 'System.Security.Permissions.MediaPermission, WindowsBase, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' failed. exactly when I try to call the EndInit() of a BitmapImage object: BitmapImage originalImage = new BitmapImage(); originalImage.BeginInit(); originalImage.CacheOption = BitmapCacheOption.OnLoad; originalImage.UriSource = new Uri(physical_imagepath); originalImage.EndInit(); Any suggestion?

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• Maven can't recognize the dependencies in both local and server

  - by Gary

  The dependencies already be available in both local and server, but maven build(clean, install) still failed and complain that can't find them. 1 Although the dependency can be found in server, but failed to build online Downloading: http://repo1.maven.org/maven2/org/codehaus/mojo/aspectj-maven-plugin/1.4/aspectj-maven-plugin-1.4.pom [WARNING] Unable to get resource 'org.codehaus.mojo:aspectj-maven-plugin:pom:1.4' from repository central (http://repo1.maven.org/maven2): (http://repo1.maven.org/maven2%29:) Authorization failed: Access denied to: h ttp://repo1.maven.org/maven2/org/codehaus/mojo/aspectj-maven-plugin/1.4/aspectj-maven-plugin-1.4.pom 2 I try to try offline, as the dependency is already in local, but failed [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Failed to resolve artifact. GroupId: org.codehaus.mojo ArtifactId: aspectj-maven-plugin Version: 1.4 Reason: System is offline. org.codehaus.mojo:aspectj-maven-plugin:pom:1.4 3 BTW, i have configured the relevant profile for the server

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• How to create a Appointment in a Shared Calendar (Sharepoint) with VBA (Macro)?

  - by Diogo K.

  I am actually trying to make an appointment from an excel spreadsheet. I have all the information of the appointment, like subject, body, start and end dates, I actually can create an appointment but only with my personal calendar in outlook. How do I copy/move/create an appointment in a shared calendar in a sharepoint server? I've tried: Dim apOL As Object Dim objFolder As Folder Dim cro As String Set apOL = CreateObject("Outlook.Application") Set oItem = apOL.CreateItem(olApItem) Set MAPISession = apOL.Session ... cro = "stssync://sts/?ver=1.0&type=calendar&cmd=add-folder&base-url=(MY SP SERVER)&list-url=%2FLists%2FCronograma%20%20%2Fcalendar%2Easpx&guid=%7B02717CEF%2D404F%2D482F%2DA131%2D5C3C245CD268%7D&site-name=Testes&list-name=Cronograma%20-" ... Set objFolder = MAPISession.OpenSharedFolder(cro, Null,Null,Null) It gives me the error "Type Mismatch" I'd try to get the objFolder as the Sharepoint Folder then later create an local appointment and then try an Item.Move objFolder Is it the correct way?

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• PHP: Ajax ignores line foldings in the text

  - by ilnur777

  I don't understand why my AJAX script ignores all line foldings. I first type text to the textarea and then put onclick to send button. Here is my AJAX realization: // creating ajax object // ==================== function createRequestObject(){ try { return new XMLHttpRequest() } catch(e) { try { return new ActiveXObject('Msxml2.XMLHTTP') } catch(e) { try { return new ActiveXObject('Microsoft.XMLHTTP') } catch(e) { return null; } } } } // message options (save, cancel) // ============================== function form1(text){ var http = createRequestObject(); if(http){ http.open("GET", "my_script.php?text=" + text); http.onreadystatechange = function (){ if(http.readyState == 4){ alert("Ok!"); } } http.send(null); } else { document.location = "my_script.php?text=" + text; } } html form <p align="justify" style="margin-right:10; margin-left:10;"> <table style="margin-right:10; margin-left:10;" align="center" border="0" cellpadding="0" cellspacing="0" width="680"> <TBODY> <form name="fgform"> <tr> <td width="680" height="100" colspan="2"><p><textarea id="edit_text1" name="edit_text" rows="3" style="width: 680; height: 100;"></textarea></p></td> </tr> <tr> <td width="340"><p><input type="button" id="saveB" value="Save Text" style="color:rgb(0,204,0); background-color:white; border-width:1; border-color:rgb(225,218,202); border-style:solid; width:100;" onclick="form1(document.getElementById('edit_text1').value);"></p></td> <td width="340"><p align="right">&nbsp;</p></td> </tr> </form> </TBODY> </table>

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• eclipse wont include/identify user .h files and .o files

  - by bks

  i'm new to eclipse CDT, and try to use an existing .o file that was supplied with the proper .h file. eclipse just wont include it in the compilation process. i tryed drag&drop to the eclipse project browser, and the files did show there, but no use, still "No such file: No such file or directory". i tryed defining the .o file in the: project properties tool settings MinGW C Linker Miscellaneous other objects. didn't work either. as for the header file, i did try a workaround: created a new file in the project and named it after the file i want to include as header, then copied the content. and yet, the compiler/linker didn't recognize the object file. perhaps you can help?thank you

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• Check if server exists

  - by buhtla

  Here is the problem. User can enter server name and connection string for database. If server is not accessible (wrong address, firewalls or any other issue), I want to be aware of this as quickly as possible. If I'm using sqlConnection and try to connect to a non-accessible server this takes very long (I think more than 1 minute!). This has nothing to do with connection timeout btw so setting this property won't help. My idea is to first try to ping server and if I get response (which means server is accessible from the point of application), than proceed with sqlConnection. If there is no response from ping, operation is aborted and user is properly notified. Is there any better way of doing this? Any idea would be welcome.

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• How do I 'globally' catch exceptions thrown in object instances.

  - by SleepyBobos

  I am currently writing a winforms application (C#). I am making use of the Enterprise Library Exception Handling Block, following a fairly standard approach from what I can see. IE : In the Main method of Program.cs I have wired up event handler to Application.ThreadException event etc. This approach works well and handles the applications exceptional circumstances. In one of my business objects I throw various exceptions in the Set accessor of one of the objects properties set { if (value > MaximumTrim) throw new CustomExceptions.InvalidTrimValue("The value of the minimum trim..."); if (!availableSubMasterWidthSatisfiesAllPatterns(value)) throw new CustomExceptions.InvalidTrimValue("Another message..."); _minimumTrim = value; } My logic for this approach (without turning this into a 'when to throw exceptions' discussion) is simply that the business objects are responsible for checking business rule constraints and throwing an exception that can bubble up and be caught as required. It should be noted that in the UI of my application I do explictly check the values that the public property is being set to (and take action there displaying friendly dialog etc) but with throwing the exception I am also covering the situation where my business object may not be used by a UI eg : the Property is being set by another business object for example. Anyway I think you all get the idea. My issue is that these exceptions are not being caught by the handler wired up to Application.ThreadException and I don't understand why. From other reading I have done the Application.ThreadException event and it handler "... catches any exception that occurs on the main GUI thread". Are the exceptions being raised in my business object not in this thread? I have not created any new threads. I can get the approach to work if I update the code as follows, explicity calling the event handler that is wired to Application.ThreadException. This is the approach outlined in Enterprise Library samples. However this approach requires me to wrap any exceptions thrown in a try catch, something I was trying to avoid by using a 'global' handler to start with. try { if (value > MaximumTrim) throw new CustomExceptions.InvalidTrimValue("The value of the minimum..."); if (!availableSubMasterWidthSatisfiesAllPatterns(value)) throw new CustomExceptions.InvalidTrimValue("Another message"); _minimumTrim = value; } catch (Exception ex) { Program.ThreadExceptionHandler.ProcessUnhandledException(ex); } I have also investigated using wiring a handler up to AppDomain.UnhandledException event but this does not catch the exceptions either. I would be good if someone could explain to me why my exceptions are not being caught by my global exception handler in the first code sample. Is there another approach I am missing or am I stuck with wrapping code in try catch, shown above, as required?

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• Is there a free virtual SmartCard which I could use to run some tests?

  - by Tom Brito

  I imagine this makes no difference, but I will try to access it using a Java application.

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• Gridview changing text in a button column

  - by Bob Avallone

  I am working in asp.net using the gridview control. I have a button column that I create dynamically as such: ButtonField bfSelect = new ButtonField(); bfSelect.HeaderText = "View"; bfSelect.ButtonType = ButtonType.Link; bfSelect.CommandName = "View"; bfSelect.Text = "View"; grdAttachments.Columns.Add(bfSelect); The text on the button is the same for every row. I was wondering if there was any way to have the text be different for different rows depending on a condition. When I try to look at the text property of a particular row it is blank, if I try to set it, it does not change. Thanks in advance. Bob

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• Undelete a contact in outlook

  - by Alister

  I have an application written in Delphi that adds / updates contacts in outlook. The problem I'm having is that if the contact has been deleted in Outlook, the code still finds the contact and updates it - and the contact still remains deleted. Is there a way I can determine if the contact is deleted or undelete the contact? Roughly the code looks something like: OutlookApp := CreateOleObject('Outlook.Application'); Mapi := OutlookApp.GetNameSpace('MAPI'); //..... try if ContactOutlookEntryID.AsString <> '' then aContact := Mapi.GetItemFromID(ContactOutlookEntryID.AsString); except end; //try to locate the contact if they have been synchro'd before if VarIsEmpty(aContact) then //if not found aContact := Contacts.Items.Add(2); //add a new contact to outlook aContact.LastName := ContactSurname.AsString; //.....

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• align="right" doesn't work in xml

  - by Syom

  i've never used xml before, and now i must chenge the align of text. i try to do it like in html, but it doesn't happen. maybe i do something wrong? here is he script <gallery> <title><![CDATA[<FONT SIZE="20" COLOR="#C3A25D"></FONT>]]></title> <text><![CDATA[<FONT SIZE="20" COLOR="#C3A25D">text, which i want to to be in right position</FONT>]]></text> <thmb></thmb> <img wdt="421">images/avetiskhakhamyan.jpg</img> </gallery> i try to write align="right" in <font> tag, but it deosn't work. could you tell me what is the problem? thanks

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• Delete object[i] from table or group in corona sdk

  - by Rober Dote

  i have a problem (obviusly :P) i'm create a mini game, and when i touch a Object-A , creates an Object-B. If i touch N times, this create N Object-B. (Object-B are Bubbles in my game) so, i try when I touch the bubble (object-B), that disappears or perform any actions. I try adding Object-B to Array local t = {} . . . bur = display.newImage("burbuja.png") table.insert(t,bur) and where i have my eventListeners i wrote: for i=1, #t do bur[i]:addEventListener("tap",reventar(i)) end and my function 'reventar' local function reventar (event,id) table.remove(t,id) end i'm lost, and only i want disappears the bubbles.

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• vb.net : is it possible to connect to sql server 2008 via odbc but not through vb.net code?

  - by phill

  I'm supporting an old vb.net program whose database it connected to was moved from SQL Server 2005 to SQL Server 2008. Is there a setting on SQL Server 2008 which will allow ODBC connections to access the database but not allow VB.NET to connect to it programmatically? the error i keep receiving in the app is: An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 – Could not open a connection to SQL Server) however I can connect to it when I create a system dsn to the sql server instance and through VS2005's Tools Connect to Database. Here is the code I'm using to connect: dim strC as string strC = "data source=bob; database=subscribers; user id=bobuser; password=passme" dim connection as New SqlClient.SqlConnection(strC) try connection.open() catch ex as Exception msgbox(ex.message) end try connection.Close()

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• C++ app fails to initialize (0xc0000005), when using C# dll

  - by Simon

  Hi, I have a C# DLL, which I call from a native C++ programm. As I use Qt and /clr compiler option did not work I followed this tutorial for a bridge. So I have a VS2008 project (compiled with /clr), which links to the C# DLL and contains the bridge class and the native class, which exposes interfaces to my C++ programm. Another VS2008 project (no .net stuff) calls the native class (statically linked). I had some issues, but now the programm at least compiles. However, if I try to run this programm, I get a (0xc0000005) error on initialization, when I try to use the native class. As this happens on initialization, I don't even see, which DLLs fail to initialize. All DLLs should be in the right place. Any hints? Thank you.

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• JsonStore.insert() causes exception in extjs

  - by kalan

  I have an EditorGridPanel with toolbar button to add new records. Everything works fine except one scenario. When I try to insert a record which already exists in database, server sends back: {"success":false,"message":"already exists","data":{}} but grid creates a new row marked with red triangle. If after that I try to insert a new record (even if it doesn't exist in database), everything works fine on the server side, but i get an 'uncaught exception' in firebug. It says: 'uncaught exception: Ext.data.DataReader: #realize was called with invalid remote-data. Please see the docs for DataReader#realize and review your DataReader configuration.' why is that?

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• Writing a line in a JTextArea from another class

  - by Christopher Nastovski

  I'm trying to use a Method in my class 'Visual' to write a line of code into a JTextArea and it prints when I call it from 'Visual' but when I call it from 'Login' It only prints Text into the Console, not to the TextArea. private static Visual Visual; Visual.WriteLine("I'm sorry, your username or password is incorrect. Please try again."); or private static Visual Visual = new Visual(); Visual.WriteLine("I'm sorry, your username or password is incorrect. Please try again."); Dont work form 'Login' But, WriteLine("Test"); works from 'Visual', the class that the method is in. Here's the method in 'Visual' public void WriteLine(String Text) { System.out.println(Text); SystemFeed.append(Text.toString() + "\n"); SystemFeed.setCaretPosition(SystemFeed.getDocument().getLength()); }

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• How can I implement this visual effect in MATLAB?

  - by user198729

  One can use Google's logo for a try: BTW, what's the term for it?

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• In WPF Not Able to Kill Adobe Acrobat Reader

  - by Blam

  Problem with killing Adobe Acrobat Reader Code used to launch the process nativeProcess = new Process(); nativeProcess.StartInfo.FileName = filePath; nativeProcess.Start(); These are Microsoft Office Files or Adobe Acrobat. Code used to kill if (nativeProcess != null) { try { nativeProcess.Kill(); } catch { } } if (nativeProcess != null) { try { nativeProcess = null; } catch { } } My problem is that Adobe Acrobat Reader does not Kill() when the app is running as a Citrix app. If I log on at the Citrix box and run it as a Desktop app then Acrobat Kill() works. Microsoft Office Kills() fine as both a Citrix app and a Deskop app. User can close Acrobat Reader using the X or close

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• ASP.NET MVC: trying out a script injection hangs Visual Studio 2010 completely?

  - by Mark Redman

  Wondering if anyone has an idea of whats going on: I am new to ASP.NET MVC and am trying out a few things with jquery/ajax. The basic scenario is a dropdownlist with an add button next to it. Clicking the add button launches a jquery ui dialog with a textbox form, entering a value saves the item to the database and refreshes the drop-downlist. The dropdownlist is re-populated using a JSON result. This all works ok. I thought I would try a script injetion attack, ie add the text: alert("oh dear") to seee what would happen and to check if I need to encode anything. When I try and save this item (similar to the same process of adding a plain text entry) Visual Studio 2010 Beta 2 hangs completely. Any ideas? UPDATE: It happens when posting: "</"

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• Asynchrous calls cause StaleObjectStateException

  - by Mulone

  Hi all, I'm struggling with a Grails service. The service gets AJAX calls from the clients and behaves like a simple local cache for remote objects: void **someCallFromClient**() { // extract params def results = remoteService.queryService(params) results.each{ // try to fetch result object from local DB def obj = SomeClass.findBySomeField(result.someField) if (!obj){ obj = new Result(params) obj.save() } // do stuff on obj } } The service works fine when only one client is connected, but as soon as 2 or more clients start bombing the server with requests, I start getting: 2010-05-24 13:09:49,764 [30893094@qtp-26315919-2] ERROR errors.GrailsExceptionResolver - Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [ some object #892901] org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [ some object #892901] // very long stactrace It probably happens when 2 calls are trying to create the same object concurrently. I suppose this is a rather typical situation to end up in. Could you recommend any pattern/good practice to fix this issue? For example, is there a way to say to one of the service instances to hang on and wait for the other to finish its stuff and try again? Cheers!

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• help me to choose the best soulotion for my purpose to build my software.

  - by rima

  before answer me plz thinking about the futures of these kind of program and answer me plz. I wanna get some data from oracle server like: 1-get all the function,package,procedure and etc for showing them or drop them & etc... 2-compile my *.sql files,get the result if they have problem & etc... becuz I was beginner in oracle first of all I for solve the second problem I try to connect to sqlPlus by RUN sqlplus and trace the output(I mean,I change the output stream of shell and trace what happend and handle the assigned message to customer. NOW THIS PART SUCCEED. just a little bit I have problem with get all result because the output is asynchronous.any way... [in this case I log in to oracle Server by send argument to the sqlplus by make a process in c#] after that I try to get all function,package or procedure name,but I have problem in speed!so I try to use oracle.DataAccess.dll to connect the database. now I m so confusing about: which way is correct way to build a program that work like Oracle Developer! I do not have any experience for like these program how work. If Your answer is I must use the second way follow this part plz: I search a little bit the Golden,PLedit (Benthic software),I have little bit problem how I must create the connection string?because I thinking about how I can find the host name or port number that oracle work on them?? am I need read the TNSNames.Ora file? IF your answer is I must use the first way follow this part plz: do u have any Idea for how I parse the output?because for example the result of a table is so confusing...[i can handle & program it but I really need someone experience,because the important things to me learn how such software work so nice and with quick response?] All of the has different style in output... If you are not sure Can u help me which book can help me in this way i become expert? becuz for example all the C# write just about how u can connect to DB and the DB books write how u can use this DB program,I looking for a book that give me some Idea how develop an interface for do transaction between these two.not simple send and receive data,for example how write a compiler for them. the language of book is not different for me i know C#,java,VB,sql,Oracle Thanks.

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