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Is there a practical alternative to struct inheritance? (C#)

- by Tim Coulter

I am writing code that will populate the Margin, Padding and BorderThickness properties of classes in the System.Windows.Documents namespace. Each of these properties accepts a value in the form of a System.Windows.Thickness, which is a struct. However, I wish to associate some additional data with each of these property assignments, which may subsequently be retrieved by my code. If Thickness were a class, I would inherit from it and define properties in the subclass to store my additional data items. But since it is a struct, inheritance is not possible. Is there any practical way to achieve this, while maintaining type-compatibility with the properties I am populating? Thanks for your ideas, Tim

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.NET Reflector and getters/setters issue

- by Humberto

I'm using an up-to-date .NET Reflector to disassemble an internal legacy app whose source code is almost impossible to recover. I need to find the cause of a nasty bug, and then possibly patch it. Reflector did a good job as usual in the re-creation of the project's structure, but soon I discovered that every property call was left "expanded" to its get_() and set_() method signatures, rendering the source code impossible to compile. A quick Visual Studio "Search/Replace" with regex solved these cases, but it's awkward. Is there a way to make Reflector behave correctly?

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Limit JavaScript and CSS files on ASP.NET MVC 2 Master Page based on Model and View content

- by Zack Peterson

I want to include certain .js and .css files only on pages that need them. For example, my EditorTemplate DateTime.ascx needs files anytimec.js and anytimec.css. That template is applied whenever I use either the EditorFor or EditorForModel helper methods in a view for a model with a DateTime type value. I've put this condition into the <head> section of my master page. It checks for a DateTime type property in the ModelMetadata. <% if (this.ViewData.ModelMetadata.Properties.Any(p => p.ModelType == typeof(DateTime))) { %> <link href="../../Content/anytimec.css" rel="stylesheet" type="text/css" /> <script src="../../Scripts/anytimec.js" type="text/javascript"></script> <% } %> This has two problems: Fails if I have nested child models of type DateTime Unnecessarily triggered by views without EditorFor or EditorForModel methods (example: DisplayForModel) How can I improve this technique?

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Assembly.CodeBase: when is it no file-URI?

- by Marc Wittke

Assembly.Location gives a plain path to the assembly. Unfortunately this is empty when running in a shadowed environment, such as unit test or ASP.NET. Hovever, the Codebase property is available and provides a URI that can be used instead. In which cases it returns no URI starting with file:///? Or in other words: what are the cases in which this won't work or will return unusable results? Assembly assembly = GetType().Assembly; Uri codeBaseUri = new Uri(assembly.CodeBase); string path = codeBaseUri.LocalPath;

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Most Efficient Alternative Method of Storing Settings for iPhone Apps

- by JPK

I am not using the Settings bundle to store the settings for my app, as I prefer to allow the user to access the settings within the app (they may be changed fairly often). I do realize that there is the option to do both, but for now, I am trying to find the most optimal place to store the settings within the app. I have a good number of settings (from what I have read, probably too many for NSUserDefaults), and the two main options I am considering are: 1) storing the settings in a dictionary in the plist, loading the settings into a NSDictionary property in the app delegate and accessing them via the sharedDelegate 2) storing the settings in a Core Data entity (1 row on Settings entity), loading the settings into a Settings object in the app delegate and accessing them via the sharedDelegate Of these two, which would be the optimal method, performance wise?

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How can I set Invitee in Google Calendar through Python?

- by Dhaval dave

I am Setting Google Calendar via python command like this def _InsertQuickAddEvent(self, content="Tennis with dddddd on 5/19/2010 4am-5:30am"): """Creates an event with the quick_add property set to true so the content is processed as quick add content instead of as an event description.""" event = gdata.calendar.CalendarEventEntry() who = whois("[email protected]") event.content = atom.Content(text=content) event.quick_add = gdata.calendar.QuickAdd(value='true'); new_event = self.cal_client.InsertEvent(event, '/calendar/feeds/default/private/full') return new_event this code is given by Google API Can any one suggest what to do to add invitee in this? Important links for that http://code.google.com/apis/calendar/data/1.0/developers_guide_python.html

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Resize an asp.net panel width based on a checkboxlist?

- by larryq

Hi everyone, I have an asp.net panel that contains a checkboxlist. I'd like to resize it so that its width fits the list's contents snugly. Right now I'm handling the panel's pre rendering event, setting its width to match that of the checkboxlist. However it appears the checkboxlist's width property reads zero (at least in this pre render method) so the panel's width is set identically, which leads to inconsistent renderings in Firefox vs IE. Does anyone have a better approach to doing what I'm attempting here? Many thanks.

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Animate the enabling of a UIBarButtonItem?

- by Michael Brewer

Is there a way to animate enabling or disabling a button? I've tried the following with no success. I'm guessing at this point that the enabled property cannot be animated like opacity can – but I hope I'm wrong. [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1.0f]; theButton.enabled = YES; [UIView setAnimationDelegate:self]; [UIView commitAnimations]; I can't believe there isn't a setEnabled:(BOOL)enabled animated:(BOOL)animated method.

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updating batches of data

- by gaponte69

I am using GridView in asp .net and editing data with edit command field property (as we know after updating the edited row, we automatically update the database), and I want to use transactions (with begin to commit statement - including rollback) to commit this update query in database, after clicking in some button (after some events for example), not automatically to insert or update the edited data from grid directly to the DB...so I want to save them somewhere temporary (even many edited rows - not just one row) and then to confirm the transaction - to update the real tables in database... Any suggestions are welcomed... I've used some good links, but very helpful, like: http://www.asp.net/learn/data-access/tutorial-63-cs.aspx http://www.asp.net/learn/data-access/tutorial-66-cs.aspx etc...

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Custom validation summary

- by Robert Morgan

I'm using the UpdateModel method for validation. How do I specify the text for the error messages as they appear in the validation summary? Sorry, I wasn't entirely clear. When I call UpdateModel(), if there is parsing error, for example if a string value is specified for a double field, a "SomeProperty is invalid" error message is automatically added to the ModelState. How do I specify the text for said automatically generated error message? If I implement IDataErrorInfo as suggested, it's error message property gets called for every column, regardless of whether the default binder deems it valid or not. I'd have to reimplement the parse error catching functionality that I get for free with the default binder. Incidentally, the default "SomeProperty is invalid" error messages seem to have mysteriously dissappeared in the RC. A validation summary appears and the relevant fields are highlighted but the text is missing! Any idea why this is? Thanks again and I hope all this waffle makes sense!

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Model Binding to a List using non-sequential indexes. Can I access the index later?

- by Kid A

I'm following Phil's great tutorial on model binding to a list. I use input names like this: book[5804].title book[5804].author book[1234].title book[1234].author This works well and the data gets back to the model just fine, populating a list of books. What I'm looking for is a way to get access in the model to the index that was used to send the books. I'd like to get that number, "5804." This is because the index is of semantic importance. If I can access it, it saves me from setting another property on the object (book ID). Is there a way to see, either on the FormCollection or on the model after UpdateModel is called, what the index was when it was sent up?

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ToolStripComboBox + objects default string value

- by Martin

I am using a ToolStripComboBox to list some data. I am populating this combo with some custom objects: For Each obj As myObject In myObjectList myToolStripComboBox.Items.Add(obj) Next This works great except the text displayed in the combo is the name of the object class. I can understand why and realise that I need to do something to make the combo use a property from my class instead. The help files state: To add objects to the list at run time, assign an array of object references with the AddRange method. The list then displays the default string value for each object. You can add individual objects with the Add method. The bit in bold suggests I need to setup the default string value in my class. How would I go about doing this?

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rewrite URLs in CSS files

- by Don

Hi, I'm writing a Maven plugin that merges CSS files together. So all the CSS files that match /foo/bar/*.css might get merged to /foo/merged.css. A concern is that in a file such as /foo/bar/baz.css there might be a property such as: background: url("images/pic.jpg") So when the file is merged into /foo/merged.css this will need to be changed to background: url("bar/images/pic.jpg") The recalculated URL obviously depends on 3 factors: original URL original CSS file location merged CSS file location Assuming that the original and merged CSS files are both on the same filesystem, is there a general formula (or Java library) that can be used to calculate the new url given these 3 inputs? Thanks, Don

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How change Subversion's default binary mime-type?

- by lamcro

Subversion sets a binary file's svn:mime-type property to application/octet-stream by default. I need to change this default to some other mime-type. When I import for the first time this code, I would like Subversion to set mime-type to the one I choose. The reason is that my code base contains code in binary files (proprietary format), and I have the applications necessary to emulate diff and diff3 for these. But Subversion does not let me due to their default mime-type. Please note: There is no default extension (*.jar, *.py, etc) for these code files. Some files don't even have an extension. So configuring mime-type by file extension is not possible.

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Core Data => Adding a related object always nil

- by mongeta

Hello, I have two tables related: DataEntered and Model DataEntered -currentModel Model One DataEntered can have only ONE Model, but a Model can stay into many DataEntered. The relationship is from DataEntered to Model (No To Many-relathionship) and no inverse relation. XCode generates the setters for DataEnteredModel: @property (nonatomic, retain) NSSet * current_model; - (void)addCurrent_modelObject:(CarModel *)value; - (void)addCurrent_model:(NSSet *)value; I have a Table and when I select a model, I want to store it to DataEntered: Model *model = [fetchedResultsController objectAtIndexPath:indexPath]; NSLog(@"Model %@",model.name); // ==> gives me the correct model name [dataEntered addCurrent_modelObject:model]; // ==> always nil [dataEntered setCurrent_model:[fetchedResultsController objectAtIndexPath:indexPath]]; // the same, always nil what I'm doing wrong ????? thanks, r.

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How to change the assemblyIdentity of an executable

- by David

I want to hide the tool I used to create an .exe file. I am not doing anything illegal, I just want to protect my intellectual property from being copied. If I open the exe file in a text editor I see the following section. <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"> <assemblyIdentity version="XXX.XX" processorArchitecture="X86" name="Microsoft.Windows.NameOfTheTool" type="win32" /> </assembly> I have attempted to change the name to: name="Microsoft.Windows.SomeOtherName" This resulted in the following message when I attempted to execute the file. "This application has failed to start because its side-by-side configuration is incorrect." How can I solve this?

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Android EditText and addTextChangedListener

- by Alex

im currently porting a database manager to android and due to performance reasons i like to update only propertys that have been modified. Im trying to do this with the addTextChangedListener in order to add modified entrys to a List, but my Program never enters any of its methods. EditText Et = (EditText) Editors.get(Prop.Name); Et.addTextChangedListener(new TextWatcher() { @Override public void afterTextChanged(Editable s) { // TODO Auto-generated method stub } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { // TODO Auto-generated method stub } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { // TODO Auto-generated method stub if(Prop.GetType() == Property.PROPTYPE.num) { float f = Float.parseFloat(s.toString()); Prop.FromString(f); } else { Prop.FromString(s.toString()); } propertiesToUpdate.add(Prop); }); Et.setText(Prop.ToString());

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C# implicit conversions

- by Chris Boden

Hello, I'm currently working on an application where I need to load data from an SQL database and then assign the retrieved values into the properties of an object. I'm doing this by using reflection since the property names and column names are the same. However, many of the properties are using a custom struct type that is basically a currency wrapper for the decimal type. I have defined an implicit conversion in my struct: public static implicit operator Currency(decimal d) { return new Currency(d); } This works fine when I use it in code. However, when I have this: foreach (PropertyInfo p in props) { p.SetValue(this, table.Rows[0][p.Name], null); } It throws an ArgumentException stating that it cannot convert from System.Decimal to Currency. I'm confused since it works fine in any other circumstance.

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What build param(s) to use so VS 2010 can gen .obj & link .objs but NOT create an .exe?

- by Csourcecode

Question title pretty much asks it all. I know I could set the project to be a .lib build and have it fail to build/link a .lib .... and the .objs tend to be in the appropriate config dir That seems like a shi*-a** backdoor way to get VS to gen objs Is there a flag/param I can set somewhere in the property sheet properties/options for Visual Studio so it links what it needs to & gens the respective objs for each source file? It's so freaking easy to just gen object files using gcc (and link in appropriate lib routines WITHOUT creating an executable) ... I'm sure I could also hack up a custom build rule but that seems like overkill [and since I'm not up to speed on the build rules for whatever version of make VS 2010 is using it's easier to ask someone else here for the simple solution]

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Deallocating NSMutableArray of custom objects

- by Dave

I need help with deallocation of my NSMutableArray of custom objects. I need to retain the array and so I have added a property in .h and I release it in dealloc in .m file. When I add objects to the array, I do the following: myarray = [[NSMutableArray alloc] init]; [myarray addObject:[[mycustomObject alloc]initWithObject:obj1]]; [myarray addObject:[[mycustomObject alloc]initWithObject:obj2]]; Now, I don't know how to release mycustomobject. If I do the following: [myarray addObject:[[[mycustomObject alloc]initWithObject:obj1] autorelease]; I run in to problems when I access the array later. Please advice.

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MQ Connection - 2009 error

- by user171523

am connectting the MQ with below code. I am able connected to MQ successfully. My case is i place the messages to MQ every 1 min once. After disconnecting the cable i get a ResonCode error but IsConnected property still show true. Is this is the right way to check if the connection is still connected ? Or there any best pratcices around that. I would like to open the connection when applicaiton is started keep it open for ever. public static MQQueueManager ConnectMQ() { if ((queueManager == null) || (!queueManager.IsConnected)||(queueManager.ReasonCode == 2009)) { queueManager = new MQQueueManager(); } return queueManager; }

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maximum string length quota error consuming WCF webservice from Biztalk.

- by TygerKrash

I'm getting this error message "The Maximum string content length quota (8192) has been exceeded while reading XML data. This quotea may be increased by changing the MaxStringContentLength property on the XmlDictionaryReaderQuotas object used when creating the XML reader" In the one of my orchestrations that consumes a wcf webservice (stacktrace indicates the receive shape is where the issue is), It is likely that the response is very large. looking at some of the other questions with this error message the solution is to change a WCF bindings setting in the configuration file. However I can't find these configuration settings when I'm using biztalk. They don't seem to be generated anywhere, should I be trying to add them to BTSNTSVc.exe.config. Any suggestions welcome.

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Show different sub-sets of a view model's properties in an edit view

- by Martin R-L

In the context of C# 4, ASP.NET MVC 2, and NHibernate; I've got the following scenario: Let's assume an entity Product that have an association to ProductType. In a product edit view; how do I implement that only a sub-set of the product's properties are shown based on the ProductType association in an elegant and DRY way? I.e., different properties shall be shown for different values of a property of the ProductType. Use a product view model builder, and from different view models automagically generate the view with my own Html.EditorForModel() (including drop-downs and other stuff not out-of-the-box)? Attribute the properties of one view model and use the Html.EditorForModel() way aforementioned? Use one model, but implement different web controls (view strategies) (can it be done DRY?)? Something else entirely?

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How to set the same column width in a datagrid in flex at runtime?

- by Ra

HI, In flex, I have a datagrid with 22 columns. I initially display all the columns. The width of each column right is uniform. Now when i change the visiblity of a few columns, the width of each column varies. How do i maintain a uniform column width for each column whether or not there are any invisible columns?... Also how do i get the count of number of visible columns. the ColumnCount property returns total number of columns and not the number of visible ones.

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Design support for templated UserControl

- by SaphuA

Hello, I have created a real simple templated UserControl using the following tutorial: http://msdn.microsoft.com/en-us/library/36574bf6(VS.80).aspx I can now add this control to my mvc 2.0 application using: <components:Box BoxType="Help" Title="Content Title" runat="server"> <Content> <%: Html.TextBox("test") %> This is my awesome content!<br /> <b>Test</b> </Content> </components:Box> However, when I go to the designer, I get an exception: Type 'System.Web.UI.UserControl' does not have a public property named 'Content'. How can I fix this? I don't even need to use the drag-and-drop designer, just rendering the control will do fine. Thanks!

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