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• C# Desktop Application "Encounters an error and has to exit" on first run of the day

  - by Sreedevi J

  Hello, It seems I tend to attract strange issues. This time, I have written a C# application, and handled most of the exceptions I can find. The problem is, when I run the installed/bundled version on any PC for the first time in a day (after the PC has been shut down and started after a while) it comes across some error and has to shutdown the application (even though the try-catch block surrounding the Main() does not fire). The application does not throw the same error on subsequent runs. I added an #if(!DEBUG) ... #else ... #endif surrounding the Main() code. Can anyone help me? Thanks!

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• How do I override ToString in C# enums?

  - by scraimer

  In the post Enum ToString, a method is described to use the custom attribute DescriptionAttribute like this: Enum HowNice { [Description("Really Nice")] ReallyNice, [Description("Kinda Nice")] SortOfNice, [Description("Not Nice At All")] NotNice } And then, you call a function GetDescription, using syntax like: GetDescription<HowNice>(NotNice); // Returns "Not Nice At All" But that doesn't really help me when I want to simply populate a ComboBox with the values of an enum, since I cannot force the ComboBox to call GetDescription. What I want has the following requirements: Reading (HowNice)myComboBox.selectedItem will return the selected value as the enum value. The user should see the user-friendly display strings, and not just the name of the enumeration values. So instead of seeing "NotNice", the user would see "Not Nice At All". Hopefully, the solution will require minimal code changes to existing enumerations. Obviously, I could implement a new class for each enum that I create, and override its ToString(), but that's a lot of work for each enum, and I'd rather avoid that. Any ideas? Heck, I'll even throw in a hug as a bounty :-)

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• Java Mail timeout & connectiontimeout handling

  - by Gnanam

  Hi, I'm using JavaMail to send email requests to an SMTP server. I would like to set both "mail.smtp.connectiontimeout" and "mail.smtp.timeout" properties within my code. Programmatically, I want to catch both when timeout and/or connectiontimeout operations are reached in Java and handle things accordingly. Handling in the sense, I need to retry the same email once again the next time. How do I handle this in Java/JavaMail? Is it possible to catch & handle this timeout operations?

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• Different between &$DataRow and $DataRow

  - by KoolKabin

  hi guys, I am confused from the result of the following code: I can't get my expected result: $arrX = array('a'=>array('val'=>10),'b'=>array('val'=>20), 'c'=>array('val'=>30)); foreach( $arrX as &$DataRow ) { $DataRow['val'] = $DataRow['val'] + 20; } foreach( $arrX as $DataRow ) { echo '<br />val: '.$DataRow['val'].'<br/>'; } Output: 30, 40, 40 Expected: 30, 40, 50 But again if i make small chage it works fine, $arrX = array('a'=>array('val'=>10),'b'=>array('val'=>20), 'c'=>array('val'=>30)); foreach( $arrX as &$DataRow ) { $DataRow['val'] = $DataRow['val'] + 20; } foreach( $arrX as &$DataRow ) { echo '<br />val: '.$DataRow['val'].'<br/>'; }

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• Use boost date_time to parse and create HTTP-dates

  - by John Price

  I'm writing a kind of HTTP proxy, so I need to be able to do 3 things: Parse an HTTP-date given any of the 3 formats specified in RFC 2616, sec 3.3, Convert a file date-time to an HTTP-date string, and Output the date to a string. For reference, theses are examples of the date-times I need to parse. I will output only the first format: Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 1123 Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036 Sun Nov 6 08:49:37 1994 ; ANSI C's asctime() format I'm pretty sure Boost date_time can do all of this, but I'm having some trouble with number 1. Does anyone already have code to do this? Perhaps I'm not using google proficiently, but I can't find an example of how to do this with boost anywhere. Thanks for any help!

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• Read only particular fields from CSV File in vb.net

  - by fireBand

  Hi, I have this code to read a CVS file. It reads each line, devides each line by delimiter ',' and stored the field values in array 'strline()' . How do I extract only required fields from the CSV file? For example if I have a CSV File like Type,Group,No,Sequence No,Row No,Date (newline) 0,Admin,3,345678,1,26052010 (newline) 1,Staff,5,78654,3,26052010 I Need only the value of columns Group,Sequence No and date. Thanks in advance for any ideas. Dim myStream As StreamReader = Nothing ' Hold the Parsed Data Dim strlines() As String Dim strline() As String Try myStream = File.OpenText(OpenFile.FileName) If (myStream IsNot Nothing) Then ' Hold the amount of lines already read in a 'counter-variable' Dim placeholder As Integer = 0 strlines = myStream.ReadToEnd().Split(Environment.NewLine) Do While strlines.Length <> -1 ' Is -1 when no data exists on the next line of the CSV file strline = strlines(placeholder).Split(",") placeholder += 1 Loop End If Catch ex As Exception LogErrorException(ex) Finally If (myStream IsNot Nothing) Then myStream.Close() End If End Try

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• Error calling webservice from JQuery

  - by Robban

  I have a strange problem when I'm trying to call a simple webservice method from Jquery. Locally it works fine, but on my test-server it does not. The jquery request looks like this (only showing the actual request and not the rest of the method): $.ajax({ type: "POST", url: "/Service/Service.asmx/AddTab", data: "tab=" + element.innerHTML, success: function(msg) { alert('success'); } }); When I run this locally from the test-server it works fine, which has me wondering if it could be some setting that I've missed in the IIS. If I navigate to the .asmx file and click the AddTab method I get a list of SOAP 1.1 and SOAP 1.2 XML, but not the HTTP POST request. If I navigate to it locally I get all three (SOAP 1.1, SOAP 1.2 and HTTP Post) The service is set up as follows: [WebService(Namespace = "mynamespace")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [System.ComponentModel.ToolboxItem(false)] [ScriptService()] public class Service : System.Web.Services.WebService { [WebMethod(EnableSession=true)] [ScriptMethod()] public void AddTab(string tab) { //Some code to add a tab which evidently works locally... } } Anyone have a clue what I'm missing here?

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• How i draw the graph including X- and Y-axis lines?

  - by Rajendra Bhole

  Hi, I want to make an application in which i want to make simple graph using NSObject class and using CGContext method. All lines should be displaying dynamically in X and Y-axis interval text also, i trying develop something like following code, CGContextSetRGBStrokeColor(ctx, 2.0, 2.0, 2.0, 1.0); CGContextSetLineWidth(ctx, 2.0); //(number of lines) CGContextMoveToPoint(ctx, 30.0, 230.0); CGContextAddLineToPoint(ctx, 30.0, 440.0); //CGContextAddLineToPoint(ctx, 320.0, 420.0); //CGContextStrokePath(ctx); for(float x = 20.0; x <= 320.0; x++) { CGContextSetRGBStrokeColor(ctx, 2.0, 2.0, 2.0, 1.0); CGContextMoveToPoint(ctx, x, 420.0); CGContextAddLineToPoint(ctx, x+45.0, 420.0); CGContextStrokePath(ctx); } How i develop using above functions? Thanks.

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• Constructor invocation returned null: what to do?

  - by strager

  I have code which looks like: private static DirectiveNode CreateInstance(Type nodeType, DirectiveInfo info) { var ctor = nodeType.GetConstructor(new[] { typeof(DirectiveInfo) }); if(ctor == null) { throw new MissingMethodException(nodeType.FullName, "ctor"); } var node = ctor.Invoke(new[] { info }) as DirectiveNode; if(node == null) { // ???; } return node; } I am looking for what to do (e.g. what type of exception to throw) when the Invoke method returns something which isn't a DirectiveNode or when it returns null (indicated by // ??? above). (By the method's contract, nodeType will always describe a subclass of DirectiveNode.) I am not sure when calling a constructor would return null, so I am not sure if I should handle anything at all, but I still want to be on the safe side and throw an exception if something goes wrong.

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• POSTDATA, ASIHTTPrequest + instapaper

  - by Andrew

  Hi guys, I'm trying to use ASIHTTPRequest to submit links to instapaper (http://www.instapaper.com/api). I'm able to authenticate but I get a 400 response when trying to submit a link, so I'm clearly in need of figuring how to use postdata. Any help appreciated. Sample code attached. Thanks NSURL *url = [NSURL URLWithString:urlInstapaperAddUrl]; ASIHTTPRequest instapaperAuthRequest = [ASIHTTPRequest requestWithURL:url]; [instapaperAuthRequest setDelegate:self]; [instapaperAuthRequest setRequestMethod:@"PUT"]; NSData temp = [[NSData alloc] initWithData:[@"url=http://www.redhat.com" dataUsingEncoding:NSASCIIStringEncoding]]; [instapaperAuthRequest appendPostData:temp]; [instapaperAuthRequest addBasicAuthenticationHeaderWithUsername:@"myusername" andPassword:@"mypassword"]; [instapaperAuthRequest startAsynchronous];

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• Embed font in a mac bundle

  - by RW

  I have a program I am writing. I want to use a fancy font. Can I just embed my font into my bundle and use it from there. My code... NSMutableAttributedString *recOf; recOf = [[NSMutableAttributedString alloc] initWithString:@"In Recognition of"]; length = [recOf length]; [recOf addAttribute:NSFontAttributeName value:[NSFont fontWithName:@"Edwardian Script ITC" size:50] range:NSMakeRange(0, length)]; [[NSColor blackColor] set]; p.x = (bounds.size.width/2)- (([recOf size].width)/2); p.y = (bounds.size.height/1.7); [recOf drawAtPoint:p]; [recOf release];

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• Building Android app from ant via Hudson - chicken and egg problem

  - by Eno

  When using an Android-generated ant build file, the file references your SDK installation via an sdk.dir property inside the local.properties files which is generated by "android update project -p .". The comments in build.xml suggest that local.properties should NOT be checked into version control. BUT, when you run your build from Hudson, it does a fresh checkout of your code from version control, hence local.properties does not exist and subsequently the build fails without sdk.dir being set. So its kind of chicken and egg problem. As a workaround I have checked local.properties into version control for now (nobody else will use it) but I was curious as to how other developers had tackled this problem ?

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• Looking for a Open Source Library Management software on LAMP preferably Java based.

  - by Sathya

  I am planning to set up a library in my organization. I am looking for a OpenSource solution. While I am continuing my googling on the same, Pls share your experience with any software that you might have come across. The features that I look for is 1. ISBN based. 2. Interfaces for barcode scanning (of ISBN code) 3. Integration with Amazon ( for reviews and ratings) 4. All the usual library facilities (Search, Checkin, checkout, checkout history, user reviews, user ratings etc). 5. Nice to have features - More personalization, booking of titles in advance, recommending books to select users etc.

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• Caesar Cipher in Java (Spanish Characters)

  - by Rodolfo

  I've reading this question, and I was wondering if Is there any way to consider the whole range of characters? For example, "á", "é", "ö", "ñ", and not consider " " (the [Space])? (For example, my String is "Hello World", and the standard result is "Khoor#Zruog"; I want to erase that "#", so the result would be "KhoorZruog") I'm sure my answer is in this piece of code: if (c >= 32 && c <= 127) { // Change base to make life easier, and use an // int explicitly to avoid worrying... cast later int x = c - 32; x = (x + shift) % 96; chars[i] = (char) (x + 32); } But I've tried some things, and it didn't work.

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• C# Thread Queue Synchronize

  - by ikurtz

  Greetings, I am trying to play some audio files without holding up the GUI. Below is a sample of the code: if (audio) { if (ThreadPool.QueueUserWorkItem(new WaitCallback(CoordinateProc), fireResult)) { } else { MessageBox.Show("false"); } } if (audio) { if (ThreadPool.QueueUserWorkItem(new WaitCallback(FireProc), fireResult)) { } else { MessageBox.Show("false"); } } if (audio) { if (ThreadPool.QueueUserWorkItem(new WaitCallback(HitProc), fireResult)) { } else { MessageBox.Show("false"); } } The situation is the samples are not being played in order. some play before the other and I need to fix this so the samples are played one after another in order. How do I implement this please? Thank you.

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• Spacing from outer space

  - by meo

  I just wonder where is this space between the end of the image and the end of the li's are coming from: http://bluesys.ch/lussy/ its just a simple UL li img code: div#slider { border: 5px solid #fff; } div#slider ul li { border-bottom: 1px solid pink; } div#slider ul li img { border-bottom: 1px solid green; margin: 0; } note that all margins and paddings are set to 0 by my reset.css can someone help me out? I colored the borders that you can see the spacing i speak of. I use firefox.

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• xmlCtxtGetLastError - Iphone

  - by Raphael Kohn

  Hi, I have been programming with NSXMLParser for quite a while and lately, I came out with this error. The strangiest thing is that it only happens in debug mode. Once I load the App in Simulator and run it from Simulator (without Xcode involved), it runs fine. The code is very straight foward, it is a simple XML parsing whose contents were loaded from the web in a separated thread. Does anybody have alredy encoutered that error?? Thanks in advance.

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• Perl Hash Slice, Replication x Operator, and sub params

  - by user210757

  Ok, I understand perl hash slices, and the "x" operator in Perl, but can someone explain the following code example from here (slightly simplified)? sub test{ my %hash; @hash{@_} = (undef) x @_; } Example Call to sub: test('one', 'two', 'three'); This line is what throws me: @hash{@_} = (undef) x @_; It is creating a hash where the keys are the parameters to the sub and initializing to undef, so: %hash: 'one' = undef, 'two' = undef, 'three' = undef The rvalue of the x operator should be a number; how is it that @_ is interpreted as the length of the sub's parameter array? I would expect you'd at least have to do this: @hash{@_} = (undef) x length(@_);

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• How to structure class to support imported 3d model ?

  - by brainydexter

  Hello, I've written a C++ library that reads in this 3d model file (collada DAE). uptil now, I would output a list of triangles and handle each at rendering stage. But now, I need to attach some Bounding sphere information with the imported model. I need some advice on how should I organize this in code. Here are some specs of the 3D file format: - 3D model is represented as a Tree consisting of nodes - each node can contain other nodes, geometry information, transformation etc My requirements: - a bounding sphere associated with each node, thereby yielding a tree of bounding sphere hierarchy for the model itself. - actual vertex information What would be the recommended way to deal with this situation? Thanks

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• How to get current location with an accept accuracy in Android

  - by virsir

  I am trying to locate user's device to get its current location with coarse method. The problem is that I can only accept a location with accuracy of 1000m, my code like this: public void onLocationChanged(Location location) { currentLocation = location; if(location.hasAccuracy()) { if(location.getAccuracy() < 1000) { locationManager.removeUpdates(this); callback(); //do callback here } } } But what if the network is not good and I can not get the location with that accuracy? I may want to accept the latest location I got if I have requested its location for some time, like 1 minute. Then how can I control the request time, for example, 1 minute, if it did not get the accurate location until then, I will stop it and then accept the latest location I have got if exist.

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• How to detect an overflow in C++ ?

  - by Tim

  Hi, I just wonder if there is some convenient way to detect if overflow happens to any variable of any default data type used in a C++ program during runtime? By convenient, I mean no need to write code to follow each variable if it is in the range of its data type every time its value changes. Or if it is impossible to achieve this, how would you do? For example, float f1=FLT_MAX+1; cout << f1 << endl; doesn't give any error or warning in either compilation with "gcc -W -Wall" or running. Thanks and regards!

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• Automated payment notification with php

  - by Rob Y

  I'm about to integrate automated payments into a site. To date, I've successfully used paypal for a number of projects, but these have always been sites which sell physical goods, meaning I can upload the cart contents, user pays, person physically ships goods. This site is a one off payment to enable extra features on a web app. My current thinking is to go down the paypal IPN route to get a notification back and update the users account based on the successful payment. Question is in two parts: 1 - is there a better / simpler way? (any payment processor considered) 2 - does anyone know of a code library or plug in for php which will speed up my integration? Thanks for your help. Rob

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• Simple string encryption in .NET and Javascript

  - by jonathanconway

  I'm developing an ASP.NET MVC application in which I want to encrypt a short string on the server, using C#, and send it to the client-side. Then on the client-side it will be decrypted through Javascript code. Any thoughts on how to implement this? Do you know of a simple encryption algorithm (doesn't have to be bullet-proof secure) that can be easily translated from C# to Javascript or vice-versa? NOTE: I could do this entirely in C# and do the decryption through Ajax, but I'd prefer not to do it this way, as I want to reduce website traffic as much as possible.

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• GWT application throws an exception when run on Google Chrome with compiler output style set to 'OBF

  - by Elifarley

  I'd like to know if you guys have faced the same problem I'm facing, and how you are dealing with it. Sometimes, a small and harmless change in a Java class ensues strange errors at runtime. These errors only happen if BOTH conditions below are true: 2) the application is run on Google Chrome, and 1) the GWT JavaScript compiler output style is set to 'OBF'. So, running the application on Firefox or IE always works. Running with the output style set to 'pretty' or 'detailed' always works, even on Google Chrome. Here's an example of error message that I got: "((TypeError): Property 'top' of object [object DOMWindow] is not a function stack" And here's what I have: - GWT 1.5.3 - GXT 1.2.4 - Google Chrome 4 and 5 - Windows XP In order to get rid of this Heisenbug, I have to either deploy my application without obfuscation or endure a time-consuming trial-and-error process in which I re-implement the change in slightly different ways and re-run the application, until the GWT compiler is happy with my code. Would you have a better idea on how to avoid this?

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• c# website login with post method

  - by druffmuff

  Hi, How can I with c sharp log me in into a website by using the post method? Any Ideas how to do this? Here's the html code of the forumlar: <form action="http://www.site.com/login.php" method="post" name="login" id="login"> <table border="0" cellpadding="2" cellspacing="0"> <tbody> <tr><td><b>User:</b></td><td colspan=\"2\"><b>Passwort:</b></td></tr> <tr> <td><input class="inputbg" name="user" type="text"></td> <td><input class="inputbg" name="password" type="password"></td> <td><input type="submit" name="user_control" value="Eingabe" class="buttonbg" ></td> </tr> </tbody></table></form>

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