This question (along with its answer) explains why you can't easily bind a DataGridView to an interface type and get columns for properties inherited from a base interface. The suggested solution is to implement a custom TypeConverter. My attempt is below. However, creating a DataSource and DataGridView bound to ICamel still only resul...
As as rule of thumb I generally put classes in a file of their own. Visual studio seems to encourage this but what is appropriate with regards to interfaces? e.g. I have Class Foo that implements interface Bar public interface IBar { } public class Foo : IBar { } it seems natural to group these within the same file until anoth...
I m writing interfaces for new project and would like to get some advice. I have a class that have a subclass and it has a subclass. The tree of this classes is like this: Class Car { Wheels Wheel; } Class Wheels { Rims Rim; } So to simplify: one car has one wheel and one wheel has one rim. (cant make up other better example,...
Consider this class hierarchy: Book extends Goods Book implements Taxable As we know, there is a relationship between a subclass and its superclass (is-a). Q: Is there any relationship like "is-a" between Book and Taxable? GOOD Answers, but you said that "is-a" is also a relationship between Book and Taxable, but "is-a" is a relati...
As I understand interfaces they are contracts, I interpret it as the contract word, ie must have what is specified in the interface (ex open, close, read, write for an interface handling files). But what im having a hard time grasping is why you would need to have an interface that tells you what the class must be able to do at all, wou...
I'm thinking of implementing WSS, but I want complete control over the Admin interface, as far as look-and-feel and navigation. Is this possible? ...
Hi, In interface builder, there are layouts options to send to back or send to front any elements such as UIButton, UIImage, UILabel etc... Now, I would like to do the same at runtime, programmatically. Is there an easy way to do that? I do not want to create different views, just play with the z-axis. Thank you. Yohann ...
I'm coming from the Java world and are building a small c++ program at the moment. I have an object that does some work and then returns the result of the work as a list. Now a day later i changed the behavior of the object to save the results in a set to avoid duplicates in the container. But I can't simply return the set because I us...
Why shouldn't C#(or .NET) allow us to put a static/shared method inside an interface? seemingly duplicate from here. but my idea is a bit different one, I just want to put a helper for my plugins(interface) shouldn't C# at least allow this idea? namespace MycComponent { public interface ITaskPlugin : ITaskInfo { stri...
I am using Linq to Sql to access my SQL Server Database. The database contains some tables that have many to many relationships between them which leads to an awkward syntax in the Linq generated classes where I have to create a link object and associate it with both tables (child and parent), rather than just adding the child to a colle...
Having the following classes, in two different assemblies: class Member { public string Label {get;set;} // Lots of other fields... public double Thickness {get;set;} public double Width {get;set;} public double Length {get;set;} public double GetVolume () { return Thickness * Width * Length; } ...
Hi all I work on applications developed in C#/.NET with Visual Studio and very often Resharper, in the prototypes of my methods, advises me to replace the type of my input parameters with more generic ones. For instance List<> with IEnumerable<> if I only use the list with a foreach in the body of my method. I can understand why it look...
I understand that Perl's OO model is rather primitive; it is, in most respects, essentially a namespace hack. Nevertheless, I wonder if it is possible to create something like an "interface?" My goal is to have a base class from which others are extended whose principal purpose is to make mandatory the implementation of certain method...
So I have two sortable lists in a web app I'm writing. What I want to do is make one of the lists not be reorder-able, but allow it's items to be dragged onto the other list. Items from list one can be dropped on list two, but items on list one can't be rearranged. Another thing I want to do is to make it so when items are dragged off o...
I am getting a compile error from the following property. The error is: "The modifier 'public' is not valid for this item" public System.Collections.Specialized.StringDictionary IWorkItemControl.Properties { get { return properties; } set { properties = value; } } but if I remove the IWorkItemControl it compiles fine. W...
Class someInterface = Class.fromName("some.package.SomeInterface"); How do I now create a new class that implements someInterface? I need to create a new class, and pass it to a function that needs a SomeInterface as an argument. ...
The status bar has grown, so parts of my interface get cut off. Any pointers on how to fix this (e.g. using autoresize masks, etc.)? I use Interface Builder for the UI, so everything is .xib's. ...
How do I create a J2ME app for cellphones with a GUI similar to the menus you see in Java games? I've tried MIDlets with Netbeans but they only show you one GUI element at a time. (textbox, choice, login, etc) And which Java IDE would you typically design these GUIs in? Netbeans or Eclipse? and is IntelliJ IDEA usable for this aswell? ...
Hi Guys, I have an interface with several events I have base class implementing the interface I have third class extending the base class (let's call it theConcreteClass) problem: when i do something like: IMyInterface i = new theConcreteClass() and then i subscribe to any of the events (i.someEvent+=some_handler;) the event handler...
Is there a way to get the following function declaration? public bool Foo<T>() where T : interface; ie. where T is an interface type (similar to where T : class, and struct). Currently I've settled for: public bool Foo<T>() where T : IBase; Where IBase is defined as an empty interface that is inherited by all my custom interfaces....