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  • Is .NET support for Win32 Code Interop?

    - by Usman
    Hello, I need to InterOp Win32 code (unmanaged Win32 DLL's and Exe) completely with .NET. I need to call Win32 unmanaged code(DLL exported functions) at runtime i.e (knowing the types of data types in Win32 signatures and need to pass data according to that type at runtime). This is 100% possible in case of COM. You can convert COM unmanaged code to managed assemblies using tlbimp.exe and use now reflection API to work with those managed types(actual were unmanaged types now converted managed using tlbimp). But same functionality I need to get in terms of Win32(i.e) in .NET framework. How?? I know MS provided Export table reading API ..but I couldn't find exact API for InterOp of Win32 unmanaged code Regards

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  • Code required to use foreach on my own custom appSettings

    - by jamauss
    I've searched the site and haven't found exactly what I'm looking for. Close, but no cigar. Basically I want to have a config section like this: <configSections> <section name="PhoneNotificationsSection" type="Alerts.PhoneAlertConfigSection,Alerts,Version=1.0.0.0,Culture=neutral,PublicKeyToken=null"/> </configSections> <PhoneNotificationsSection> <phones> <add phone="MyMobile" value="[email protected]" /> <add phone="OtherMobile" value="[email protected]" /> </phones> </PhoneNotificationsSection> Then I'd like to, in my appSettings consuming code, be able to write something like this (pseudo code): foreach (phone p in phones) { //'phone' attribute is just helpful/descriptive DoSomething(p.value); } I've done enough research to know I probably need a few of my own classes that implement and/or inherit from certain Configuration classes to make the above code possible. I just haven't found anything that clearly demonstrates this scenario and how to code for it - and when I try to learn the whole .NET configuration world my brain starts to hurt. Anyone have some code like what I'm looking for that they can share?

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  • Facebook Authentication Error when using apps.facebook.com as URL

    - by Adi Mathur
    I am trying to login on my website using Facebook Authentication and it works fine . How ever when i access the Application by using https://apps.facebook.com/myApp then i get an error The state does not match. You may be a victim of CSRF Here is the code that i am using from facebook , I think there is a problem in $my_url <?php $app_id = "YOUR_APP_ID"; $app_secret = "YOUR_APP_SECRET"; $my_url = "https://www.example.com/login.php"; session_start(); $code = $_REQUEST["code"]; if(empty($code)) { $_SESSION['state'] = md5(uniqid(rand(), TRUE)); //CSRF protection $dialog_url = "https://www.facebook.com/dialog/oauth?client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url) . "&state=" . $_SESSION['state']; echo("<script> top.location.href='" . $dialog_url . "'</script>"); } if($_REQUEST['state'] == $_SESSION['state']) { $token_url = "https://graph.facebook.com/oauth/access_token?" . "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url) . "&client_secret=" . $app_secret . "&code=" . $code; $response = file_get_contents($token_url); $params = null; parse_str($response, $params); $graph_url = "https://graph.facebook.com/me?access_token=" . $params['access_token']; $user = json_decode(file_get_contents($graph_url)); echo("Hello " . $user->name); } else { echo("The state does not match. You may be a victim of CSRF."); } ?>

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  • Best practices in ASP.Net code behind pages.

    - by patricks418
    Hi, I am an experienced developer but I am new to web application development. Now I am in charge of developing a new web application and I could really use some input from experienced web developers out there. I'd like to understand exactly what experienced web developers do in the code-behind pages. At first I thought it was best to have a rule that all the database access and business logic should be performed in classes external to the code-behind pages. My thought was that only logic necessary for the web form would be performed in the code-behind. I still think that all the business logic should be performed in other classes but I'm beginning to think it would be alright if the code-behind had access to the database to query it directly rather than having to call other classes to receive a dataset or collection back. Any input would be appreciated.

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  • How do you unit test JEE code?

    - by marabol
    I want to ask for your prefered way to test JEE code? I found only three project, that are trying to help to code unit tests in JEE environment: http://jakarta.apache.org/cactus/ : Last Published: 2009-01-18 http://www.junitee.org/ : Last Release: 2004-12-11 http://ejb3unit.sourceforge.net/ : Last Release: 2008-05-17 So I wonder, is there any framework helping to write (j) unit test for JEE code? do you use embedded JEE servers like jboss or glassfish v3? do you mockup and inject by yourself? Thanks a lot...

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  • F# on Mac: Syntax Error on Inner Function

    - by JBristow
    The following code: exception NoElements of string let nth(k, list) = let rec loop count list = match list with | head :: _ when count = k -> head | _ :: tail when count <> k -> loop (count+1) tail | [] -> raise (NoElements("No Elements")) loop 0 list ;; printfn "%A" (nth(2, [1, 1, 2, 3, 5, 8])) Produces the following errors when compiling on a mac, but not in Visual Studio 2010: nth.fs(10,0): error FS0191: syntax error. nth.fs(4,4): error FS0191: no matching 'in' found for this 'let'.

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  • error during build using sandcastle help builder with visual studio 2010 .NET 4.0 project

    - by ZeroAbsolute
    I was using sandcastle to generate help for my project in visual studio 2008. When i change my project to visual studio 2010 and change the project .NET version to .NET 4.0 i got this problem with Sandcastel. I can't understand why sandcastel is using C:\Windows\Microsoft.NET\Framework64\v3.5\MSBuild.exe and not C:\Windows\Microsoft.NET\Framework64\v4.0\MSBuild.exe thinking that i specified as framework version the v4.0.30319 Can anyone tell me how to resolve this issue?? Where to change the path of the msbuild.exe or some other solution ??? Generating reflection information... [C:\Windows\Microsoft.NET\Framework64\v3.5\MSBuild.exe] GenerateRefInfo: MrefBuilder (v2.4.10520.1) Copyright c Microsoft 2006 Info: Loaded 1 assemblies for reflection and 0 dependency assemblies. MREFBUILDER : error : Unresolved assembly reference: System.Windows.Forms (System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089) required by WLAEDInt Last step completed in 00:00:01.2731 ------------------------------- SHFB: Error BE0043: Unexpected error detected in last build step. See output above for details.

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  • When is shared code ownership useful?

    - by alchemical
    I've worked on several projects lately that have promoted the idea of shared code ownership. At times, this seemed to speed up code-improvement and enhancement. Other times, it seemed to become a ground of ego-jousting with changes being made to support individuals coding styles, favored technologies, or simply a demonstration of power/intellect. How can shared code ownership be implemented to avoid the pitfalls and still reap the benefits? Can too many cooks spoil the broth?

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  • How to share code with continuous integration

    - by alchemical
    I've just started working in a continuous integration environment (TeamCity). I understand the basic idea of not getting so abstracted out in your code that you are never able to build it to test functionality, etc. However, when there is deep coding going on, occasionally it will take me several days to get buildable code--but in the interim other team members may need to see my code. If I check the code in, it breaks the build. However, if I don't check it in, my team members are unable to see the most recent work. I'm wondering how this situation is best dealt with.

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  • Running Perl on Windows 7 error

    - by Eyla
    Greeting, I'm trying to run smaple perl script on windows 7 and I configured IIS 7 to allow activeperl to run but I'm getting this error: HTTP Error 502.2 - Bad Gateway The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are "Hello World. ". Module CgiModule Notification ExecuteRequestHandler Handler Perl Script (PL) Error Code 0x00000000 Requested URL http://localhost:80/hello.pl Physical Path C:\inetpub\wwwroot\hello.pl Logon Method Anonymous Logon User Anonymous and here is my perl script : #!/usr/bin/perl print "Hello World.\n"; please any advice to handle this case!!!

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  • Evil DRY

    - by StefanSteinegger
    DRY (Don't Repeat Yourself) is a basic software design and coding principle. But there is just no silver bullet. While DRY should increase maintainability by avoiding common design mistakes, it could lead to huge maintenance problems when misunderstood. The root of the problem is most probably that many developers believe that DRY means that any piece of code that is written more then once should be made reusable. But the principle is stated as "Every piece of knowledge must have a single, unambiguous, authoritative representation within a system." So the important thing here is "knowledge". Nobody ever said "every piece of code". I try to give some examples of misusing the DRY principle. Code Repetitions by Coincidence There is code that is repeated by pure coincidence. It is not the same code because it is based on the same piece of knowledge, it is just the same by coincidence. It's hard to give an example of such a case. Just think about some lines of code the developer thinks "I already wrote something similar". Then he takes the original code, puts it into a public method, even worse into a base class where none had been there before, puts some weird arguments and some if or switch statements into it to support all special cases and calls this "increasing maintainability based on the DRY principle". The resulting "reusable method" is usually something the developer not even can give a meaningful name, because its contents isn't anything specific, it is just a bunch of code. For the same reason, nobody will really understand this piece of code. Typically this method only makes sense to call after some other method had been called. All the symptoms of really bad design is evident. Fact is, writing this kind of "reusable methods" is worse then copy pasting! Believe me. What will happen when you change this weird piece of code? You can't say what'll happen, because you can't understand what the code is actually doing. So better don't touch it anymore. Maintainability just died. Of course this problem is with any badly designed code. But because the developer tried to make this method as reusable as possible, large parts of the system get dependent on it. Completely independent parts get tightly coupled by this common piece of code. Changing on the single common place will have effects anywhere in the system, a typical symptom of too tight coupling. Without trying to dogmatically (and wrongly) apply the DRY principle, you just had a system with a weak design. Now you get a system which just can't be maintained anymore. So what can you do against it? When making code reusable, always identify the generally reusable parts of it. Find the reason why the code is repeated, find the common "piece of knowledge". If you have to search too far, it's probably not really there. Explain it to a colleague, if you can't explain or the explanation is to complicated, it's probably not worth to reuse. If you identify the piece of knowledge, don't forget to carefully find the place where it should be implemented. Reusing code is never worth giving up a clean design. Methods always need to do something specific. If you can't give it a simple and explanatory name, you did probably something weird. If you can't find the common piece of knowledge, try to make the code simpler. For instance, if you have some complicated string or collection operations within this code, write some general-purpose operations into a helper class. If your code gets simple enough, its not so bad if it can't be reused. If you are not able to find anything simple and reasonable, copy paste it. Put a comment into the code to reference the other copies. You may find a solution later. Requirements Repetitions by Coincidence Let's assume that you need to implement complex tax calculations for many countries. It's possible that some countries have very similar tax rules. These rules are still completely independent from each other, since every country can change it of its own. (Assumed that this similarity is actually by coincidence and not by political membership. There might be basic rules applying to all European countries. etc.) Let's assume that there are similarities between an Asian country and an African country. Moving the common part to a central place will cause problems. What happens if one of the countries changes its rules? Or - more likely - what happens if users of one country complain about an error in the calculation? If there is shared code, it is very risky to change it, even for a bugfix. It is hard to find requirements to be repeated by coincidence. Then there is not much you can do against the repetition of the code. What you really should consider is to make coding of the rules as simple as possible. So this independent knowledge "Tax Rules in Timbuktu" or wherever should be as pure as possible, without much overhead and stuff that does not belong to it. So you can write every independent requirement short and clean. DRYing try-catch and using Blocks This is a technical issue. Blocks like try-catch or using (e.g. in C#) are very hard to DRY. Imagine a complex exception handling, including several catch blocks. When the contents of the try block as well as the contents of the individual catch block are trivial, but the whole structure is repeated on many places in the code, there is almost no reasonable way to DRY it. try { // trivial code here using (Thingy thing = new thingy) { //trivial, but always different line of code } } catch(FooException foo) { // trivial foo handling } catch (BarException bar) { // trivial bar handling } catch { // trivial common handling } finally { // trivial finally block } The key here is that every block is trivial, so there is nothing to just move into a separate method. The only part that differs from case to case is the line of code in the body of the using block (or any other block). The situation is especially interesting if the many occurrences of this structure are completely independent: they appear in classes with no common base class, they don't aggregate each other and so on. Let's assume that this is a common pattern in service methods within the whole system. Examples of Evil DRYing in this situation: Put a if or switch statement into the method to choose the line of code to execute. There are several reasons why this is not a good idea: The close coupling of the formerly independent implementation is the strongest. Also the readability of the code and the use of a parameter to control the logic. Put everything into a method which takes a delegate as argument to call. The caller just passes his "specific line of code" to this method. The code will be very unreadable. The same maintainability problems apply as for any "Code Repetition by Coincidence" situations. Enforce a base class to all the classes where this pattern appears and use the template method pattern. It's the same readability and maintainability problem as above, but additionally complex and tightly coupled because of the base class. I would call this "Inheritance by Coincidence" which will not lead to great software design. What can you do against it: Ideally, the individual line of code is a call to a class or interface, which could be made individual by inheritance. If this would be the case, it wouldn't be a problem at all. I assume that it is no such a trivial case. Consider to refactor the error concept to make error handling easier. The last but not worst option is to keep the replications. Some pattern of code must be maintained in consistency, there is nothing we can do against it. And no reason to make it unreadable. Conclusion The DRY-principle is an important and basic principle every software developer should master. The key is to identify the "pieces of knowledge". There is code which can't be reused easily because of technical reasons. This requires quite a bit flexibility and creativity to make code simple and maintainable. It's not the problem of the principle, it is the problem of blindly applying a principle without understanding the problem it should solve. The result is mostly much worse then ignoring the principle.

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  • SQLSTATE[HY000]: General error: 5 Out of memory (Needed 4194092 bytes)

    - by Jon Reeks
    Hi I'm receiving the following error on my shared hosting box: SQLSTATE[HY000]: General error: 5 Out of memory (Needed 4194092 bytes) This error is only triggered on a specific page. I guess this indicates that I am reaching the upper limit of the 64MB allocated to me in my current MySQL environment. Does this mean that a single query is going over (returning) 64MB of data? If so, i guess i can just track down and tune that specific query? Or isnt that the correct approach? Thanks Jon

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  • error in GP installation

    - by Rahul khanna
    Hi all, I know this is not the forum to post installation problem, though i am posting this type problem because i am helpless. Pls someobody give me some idea. After installing the GP10.0 while i run the GP Utility for server installation. In between installation i got the following error. I have SQL2000 data base and created the System DSN for and tested successfully. Pls somebody help me what is this error about. The following SQL statement produced an error: create procedure smRuleTestSendMail @emailid varchar(255), @ccids varchar(255), @bccids varchar(255), @emailmsg varchar(255) as if substring(CONVERT(varchar(128), SERVERPROPERTY('ProductVersion')),1,PATINDEX('%.%', CONVERT(varchar(128), SERVERPROPERTY('ProductVersion'))) - 1) < 9 begin exec master.dbo.xp_sendmail @recipients=@emailid, @copy_recipients=@ccids, @blind_copy_recipients=@bccids, @message=@emailmsg, @Subject='TEST message from SQL Server' end else begin if PATINDEX ('%64-bit%',@@version) 0 begin exec msdb.dbo.sp_send_dbmail @recipients=@emailid, @copy_recipients=@ccids, @blind_copy_recipients=@bccids, @body=@emailmsg, @subject='TEST message from SQL Server' end else begin exec master.dbo.xp_sendmail @recipients=@emailid, @copy_recipients=@ccids, @blind_copy_recipients=@bccids, @message=@emailmsg, @Subject='TEST message from SQL Server' end end

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  • Getting Started with Python: Attribute Error

    - by Nacari
    I am new to python and just downloaded it today. I am using it to work on a web spider, so to test it out and make sure everything was working, I downloaded a sample code. Unfortunately, it does not work and gives me the error: "AttributeError: 'MyShell' object has no attribute 'loaded' " I am not sure if the code its self has an error or I failed to do something correctly when installing python. Is there anything you have to do when installing python like adding environmental variables, etc.? And what does that error generally mean? Here is the sample code I used with imported spider class: import chilkat spider = chilkat.CkSpider() spider.Initialize("www.chilkatsoft.com") spider.AddUnspidered("http://www.chilkatsoft.com/") for i in range(0,10): success = spider.CrawlNext() if (success == True): print spider.lastUrl() else: if (spider.get_NumUnspidered() == 0): print "No more URLs to spider" else: print spider.lastErrorText() # Sleep 1 second before spidering the next URL. spider.SleepMs(1000)

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  • Visual Studio 2008 Unexpected Error on Project Checkout with VSS 2005

    - by Cyberherbalist
    I've encountered an odd misbehavior of VS 2008's integration with Visual Source Safe 2005. Situation occurs when I fire up VS2008 when a project is checked out to someone else, and later they check the project back in, while I still hold the VS2008 open. If I at that time add a new item, VS2008 tells me that my action has caused a check out of the project and a new version has been loaded from source control. Fair enough, but thereafter I get an error dialog stating "Visual Studio has encountered an unexpected error" with OK at every subsequent action, such as save file and search text, making it almost unusable. This is overcome by closing VS (which pops the error dialog once more) and restarting. Is there some kind of fix or workaround to this (besides the obvious ones: "don't try to check out the project when it's checked out to someone else", or "get latest version if you think the other person may have checked the project back in")?

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  • Debugging Objective C JNI code

    - by thatidiotguy
    Here is the situation: I have a client's java project open in eclipse. It uses a JNI library created by an Xcode Objective C project. Is there any good way for me to debug the C code from eclipse when I execute the Java code? Obviously eclipse's default debugger cannot step into the jni library file and we lose the thread (thread meaning investigative thread here, not programming thread). Any advice or input is appreciated as the code base is large enough that following the client's code will be radically faster than other options. Thanks. EDIT: It should be noted that the reason that the jni library is written in Objective-C is because it is integrating with Mac OSX. It is using the Cocoa framework to integrate with the Apple speech api.

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  • Error Ant Build/deploy to websphere 7.0

    - by adisembiring
    Hi I'm trying to build/deploy war to websphere process server 7.0. and I run on windows environment. I use http://illegalargumentexception.blogspot.com/2008/08/ant-automated-deployment-to-websphere.html as my reference. and http://illegalargumentexception.googlecode.com/svn/trunk/code/java/WebSphereAntFiles/ as my sample code to deployed. this is my buil.properies is ? #build properties mywebappear=D:/data/code/WebSphereAntFiles/scripts/test/mywebappEAR.ear #WAS6 install directory was_home=C:/IBM/WID7_WTE/runtimes/bi_v7 #server name (see cell/node/server; e.g. "server1") was_server=server1 #user + password; for use when security is enabled was_user=admin was_password=admin #stops scripts on problem was_failonerror=true #virtual host was_virtualhost=default_host #Absolute path to EAR file #was_ear=fooEAR.ear #Name of the enterprise application #was_appname=fooEAR this is my console while I trying to build with ws_ant.bat [wsDefaultBindings] mywebapp.war [wsDefaultBindings] <virtual-host> --> default_host [wsDefaultBindings] [wsDefaultBindings] ------------------------ [wsDefaultBindings] Saving EAR File to directory [wsDefaultBindings] Saved EAR File to directory Successfully test_wsStartServer: WAS_wsStartServer: depCheck: depCheck: [startServer] ADMU0116I: Tool information is being logged in file [startServer] C:\IBM\WID7_WTE\runtimes\bi_v7\profiles\qwps\logs\server1\startServer.log [startServer] ADMU0128I: Starting tool with the qwps profile [startServer] ADMU3100I: Reading configuration for server: server1 [startServer] ADMU3028I: Conflict detected on port 8880. Likely causes: a) An instance of [startServer] the server server1 is already running b) some other process is [startServer] using port 8880 [startServer] ADMU3027E: An instance of the server may already be running: server1 [startServer] ADMU0111E: Program exiting with error: [startServer] com.ibm.websphere.management.exception.AdminException: ADMU3027E: An [startServer] instance of the server may already be running: server1 [startServer] ADMU1211I: To obtain a full trace of the failure, use the -trace option. [startServer] ADMU0211I: Error details may be seen in the file: [startServer] C:/IBM/WID7_WTE/runtimes/bi_v7/profiles/qwps\logs\server1\startServer.log BUILD FAILED D:\data\code\WebSphereAntFiles\scripts\test\build.xml:68: The following error occurred while executing this line: D:\data\code\WebSphereAntFiles\scripts\was\wsStartServer.xml:49: Java returned: -1

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  • How to avoid code repetition initializing final properties?

    - by Hernán Eche
    public class Code{ //many properties //... final String NEWLINE;// ohh a final property! void creation() //this method is for avoid repetition of code { //final initialization can't be put here =( Source= new StringBuffer(); //many other commons new's .. //... } Code() { NEWLINE = System.getProperty("line.separator"); creation(); } Code(String name, int numberr) { NEWLINE = System.getProperty("line.separator"); creation(); name=new Someting(name); number = new Magic(number); } }

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  • How to get descriptive error messages from DB2?

    - by tangens
    When I call a SQL statement via JDBC on the DB2 and the statement fails, I catch an SQLException with the following message text: com.ibm.db2.jcc.a.nn: DB2 SQL Error: SQLCODE=-206, SQLSTATE=42703, SQLERRMC=O.METADATENSATZ, DRIVER=3.52.95 I tried an automatic translation of the message according to the error list published by IBM, but there are placeholders inside the messages referencing other elements of the exception. While looking for these elements inside the exception, I found the DB2ExceptionFormatter and tried to use it to access the missing elements. But here I stopped, because the DB2ExceptionFormatter gave me a clue: Error occurred while trying to obtain message text from server. Only message tokens are available. So my question is: What do I have to configure to get the correct messages from the DB2 server? If I can get a human readable message from the server, I could use it directly and wouldn't have to translate it by myself.

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  • Makefile error: Unexpected end of line seen

    - by Winston C. Yang
    Trying to install Git, I ran configure and make, but got the following error message: make: Fatal error in reader: Makefile, line 221: Unexpected end of line seen The Makefile looks like: 218: GIT-VERSION-FILE: FORCE 219: @$(SHELL_PATH) ./GIT-VERSION-GEN 220: -include GIT-VERSION-FILE 221: 222: uname_S := $(shell sh -c 'uname -s 2>/dev/null øø echo not') What's causing the error? The following information may or may not be relevant: I tried to install Git 1.7.0.3 on SunOS 5.9 (Solaris 9) in a directory in my account. The gcc version is 3.4.2 (older then the version of 3.4.6 stated by sunfreeware.com). I don't have root privileges.

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  • Getting error while transfering PGP file through FTP : The underlying connection was closed: An unex

    - by sumeet Sharma
    I am trying to upload a PGP encrypted file through FTP. But I am getting an error message as follows: The underlying connection was closed: An unexpected error occurred on a receive. I am using the following code and getting the error at line: Stream ftpStream = response.GetResponse(); Is there any one who can help me out ASAP. Following is the code sample: FtpWebRequest request = WebRequest.Create("ftp://ftp.website.com/sample.txt.pgp") as FtpWebRequest; request.UsePassive = true; FtpWebResponse response = request.GetResponse() as FtpWebResponse; Stream ftpStream = response.GetResponse(); int bufferSize = 8192; byte[] buffer = new byte[bufferSize]; using (FileStream fileStream = new FileStream("localfile.zip", FileMode.Create, FileAccess.Write)) { int nBytes; while((nBytes = ftpStream.Read(buffer, 0, bufferSize) > 0) { fileStream.Write(buffer, 0, nBytes); } } Regards, Sumeet

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  • Code folding is not saved in my vimrc

    - by janoChen
    I added the following code to my .vimrc: " save and restore folds when a file is closed and re-opened autocmd BufWinLeave *.* mkview autocmd BufWinEnter *.* silent loadview HTML and CSS documents save and restore their folds but code folding is not being saved in my .vimrc Any suggestions? EDIT: The following code solves the problem: au BufWinLeave ?* mkview au BufWinEnter ?* silent loadview but if I write it, the MRU files disappear from my list (and I have to open MRU twice in order to see my list of recent files why?)

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  • Webservices on iPhone - wsdl2objc - Sample Code?

    - by markmcgookin
    I have recently downloaded the most recent build of this awesome tool WSDL2OBJC from google code here: http://code.google.com/p/wsdl2objc/ After a bit of tweaking and downloading the latest version of the trunk from the svn repo I got a version that created the code for a WSDL I am using and compiles great and actually installs on my phone! However, I'm not doing anything with it yet, because I am not really sure how to. There is very little in the way of sample code on the site, and there is a sample file in the project if you download it, but again it is very complicated and there are no real bits of documentation. Has anyone managed to successfully use this stuff? It seems SOOO powerful and useful but from a look around the Internet, no one knows how to use it. We (all) would love someone who has figured it out to post a simple project or detailed walk-through of implementing this so we can put the code that lots of people have worked hard on to good use. If anyone has found a blog entry or has this information it would be great to see! I am totally stuck... with no errors. I would love to know how to use this now that it's all compiled successfully!

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