Do I remove the screw keeper on a self-grounding outlet? Save those classes he describes in his answer = as a class, and in your AppDelegate.h (or whatever), put #import PropertyUtil.h. Then what happens if a static function that applies to all objects in A calls a virtual member function on each object? Why do keywords have to be reserved words? I have written a more Objective-C-friendly solution to this problem that works on the device. What is the significance of Headband of Intellect et al setting the stat to 19? To get the symbols of an object to enumerate over, use Object.getOwnPropertySymbols (this function is why Symbol can't be used to make private properties). I'm thinking this has something to do with c# reflection but it's all new to me. Get properties and values from unknown object, Why on earth are people paying for digital real estate? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Were Patton's and/or other generals' vehicles prominently flagged with stars (and if so, why)? Namespace: This had to be the Namespace+ObjectClassName that we would know when . What is the significance of Headband of Intellect et al setting the stat to 19? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Do United same day changes apply for travel starting on different airlines? rev2023.7.7.43526. Only the names. What is the number of ways to spell French word chrysanthme ? 13 Answers Sorted by: 343 This should do it: Type myType = myObject.GetType (); IList<PropertyInfo> props = new List<PropertyInfo> (myType.GetProperties ()); foreach (PropertyInfo prop in props) { object propValue = prop.GetValue (myObject, null); // Do something with propValue } Share Improve this answer Follow answered Nov 10, 2010 at 13:15 should do its best to answer a question for the way something SHOULD be done. There is no really need to create a list from array, simply, Do you want to update for the 2017 answer using, @clone that's a completely different way of doing it. As has already been stated C++ does not provide a mechanism to do this automatically. Again, then you can just create a constructor that takes the ID as its argument, etc. Why add an increment/decrement operator when compound assignnments exist? List class can accept null as a valid value for reference types and it also allows duplicate elements. As long as you follow rule of Three, it'll work fine. You can do this yourself, but make sure you know what you're doing. Asking for help, clarification, or responding to other answers. Get specific property from all items from the list Get user-friendly name of simple types through reflection? If your library requires, or even allows, your strongly-typed objects to be altered using string representations of their member names, there is a huge issue with your code base. Asking for help, clarification, or responding to other answers. Transform (or copy) an object to a subclass instance in Objective-C, Put all object properties into an NSDictionary or NSArray. Using a script to parse the header file wouldn't have worked for what I needed on runtime. I was using function boliva provided, but apparently it stopped working with iOS 7. Is there a legal way for a country to gain territory from another through a referendum? However, the lowest cost coverage I was offered came . Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The property value of the specified object. I want to display information from my collection List c#. Asking for help, clarification, or responding to other answers. Call toDictionary on your object instance and access keys property. Everything else was giving me like "NSString\x8d\xc0\xd9" weirdness for the property types, presumably because the char* sizing was off, This throw a EXC_BAD_ACCESS exception on NSRange const typeRangeStart = [attributes rangeOfString:@"T@\""]; // start of type string. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Why on earth are people paying for digital real estate? I found an example from iOS documentation: "Objective-C Runtime Programming Guide: Declared Properties". By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. How can a web browser simultaneously run more videos than the number of CPU cores? Is there a built-in .NET method for getting all of the properties and values for an object? How get properties for not collection property, trying to find property values in a collection using reflection, Getting all ICollection properties through reflection, Get all properties from an object including properties of reference members. This can lead to unexpected results like crashing while trying to convert it to UTF8 (I actually had a pretty annoying crashbug just because of that. Syntax : Can you work in physics research with a data science degree? Is there a distinction between the diminutive suffices -l and -chen? get the properties of a list of objects dynamically? How to recursively print the values of an object's properties using reflection, Print out 1 object in a List of objects in C#. You can use the TypeDescriptor class to do this: TypeDescriptor lives in the System.ComponentModel namespace and is the API that Visual Studio uses to display your object in its property browser. It's about time we got real object property and method introspection on top of every NSObject. How do I get list of object property names and values in C#? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. @orange80's answer has one problem: It actually doesn't always terminate the string with 0s. How do I get a list of all the properties of a class? Typo in cover letter of the journal name where my manuscript is currently under review. What is the Modified Apollo option for a potential LEO transport? Imagine the following scenario: I have defined a parent class which just extends NSObject, that holds an NSString, a BOOL and an NSData object as properties. If magic is programming, then what is mana supposed to be? Get properties and values from unknown object - Stack Overflow To learn more, see our tips on writing great answers. (For e.g. Do I have the right to limit a background check? This thing will not work for properties with an index - for that (it's getting unwieldy): Also, to get only public properties: (see MSDN on BindingFlags enum). So you can use some kind of table or other data structure to store a reference to each object. For example, when working with PowerShell's PSObject, which can have properties and methods added at runtime, they implemented a custom TypeDescriptor which merges these members in with the standard member set. The object could be one of three different types and will have a set of public properties. In there, there's a project called ObjectDumper. Don't use JavaScriptSerializer if you can avoid it. Is there a method built into .NET that can write all the properties and such of an object to the console? Not the answer you're looking for? I was investigating some debugging on long object graphs and noticed this when i Add Watches, VS throws in this class: Mscorlib_CollectionDebugView<>. Was fun debugging it ^^). Properties for its superclasses are not included. Suggestion: Expand answer to cover protected/private/static/inherited properties. This example gets all the properties and prints their name and Count to the console: public static void PrintSeriesList () { SampleChartData myList = new SampleChartData (); PropertyInfo [] Fields = myList.GetType ().GetProperties (); foreach (PropertyInfo field in Fields . =). Making statements based on opinion; back them up with references or personal experience. Edit and create text captions with Captivate Classic - Adobe Inc. Then I have several classes which extend this parent class, adding a lot of different properties each. Converting a list of objects to a list of an object property, How can I return object properties from list, Get List of properties from a List of objects corresponding to another property, Get properties of one object from the list of objects. "This technique is right and this is not", might mean you're under somebody's influence, but haven't really though about it. Go to: This will unzip to a folder called LinqSamples. (Ep. Get-Member (Microsoft.PowerShell.Utility) - PowerShell Check this out. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Fetch and print all properties of an object graph as string Object properties tell us about the object Every time you run a "Get-" PowerShell cmdlet, you receive a single object or set of objects. You CAN implement this mechanism yourself quite easily - register class in some kind of table within constructor, unregister within destructor. rev2023.7.7.43526. Is religious confession legally privileged? 11 Answers Sorted by: 1002 Reflection; for an instance: obj.GetType ().GetProperties (); for a type: typeof (Foo).GetProperties (); for example: class Foo { public int A {get;set;} public string B {get;set;} } . Making statements based on opinion; back them up with references or personal experience. Why did the Apple III have more heating problems than the Altair? Is there a way to pass the IFormFile to a lista, or will I have to manipulate use them in the Car object. How can I remove a mystery pipe in basement wall and floor? I will explain how: Conform your object to Encodable protocol, Create extension for Encodable to provide toDictionary functionality. You can do this by calling the GetType method on Object. ;). Is there a legal way for a country to gain territory from another through a referendum? I was giving a look but there is a problem I cannot workaround, to make it recursive I need to call the method for the superclass (like in the last line of the previous code) as NSObject is the root class that wont work inside a category. Any other solution/library is in the end going to use reflection to introspect the type Don't think so. If you really want to go hog wild though.. check out.. class-dump, which is a mind-bogglingly insane way to peek into class headers of ANY executable, etc It provides a VERBOSE look into your classes that I, personally, find truly helpful - in many, many circumstances. Getting Property Values of an Object Dynamically in C# - C# Corner Find centralized, trusted content and collaborate around the technologies you use most. @H2CO3: No. Get all properties with values reflection, Get C# Property Values for multiple objects, Get all types of properties for an object, C# get all properties of a certain type of an object in C#, Get all properties with its values as string in c#. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. In C++, I'm pretty sure you can't, at least not directly. Following snippet will do the desired function: I think if you write this as extension method you could use it on all type of objects. Connect and share knowledge within a single location that is structured and easy to search. // Get property array var properties = GetProperties (some_object); foreach (var p in properties) { string name = p.Name; var value = p.GetValue (some_object, null); } private static PropertyInfo [] GetProperties (object obj) { return obj.GetType ().GetProperties (); } The compiler generates the storage location for the field that backs up the property. Would a room-sized coil used for inductive coupling and wireless energy transfer be feasible? Making statements based on opinion; back them up with references or personal experience. This. Examples. Imagine the following scenario: I have defined a parent class which just extends NSObject, that holds an NSString, a BOOL and an NSData object as properties. You can use it to "project" from your object collection to another collection - in this case a collection of object property values. Thanks. How can I get specific type of properties of a class? One useful example of the use of these methods is to copy an object to a subclass instance in Objective-C without having to specify the properties in a copy method. PowerShell Just use Factory pattern to create and destroy all your objects and, in Factory implementation, return a collection of live objects in a Factory function that you will provide. There is nothing preventing Factory having some STL container as internal implementation. The following example defines a Planet class that has two properties: Name, the name of the planet; and Distance, the planet's distance from Earth.The example instantiates a Planet object that represents the planet Jupiter and passes it to a GetPropertyValues method that displays information about the properties and uses the GetValue method . Problems: 1. Invitation to help writing and submitting papers -- how does this scam work? Now coz it's internal you can reference it, but u can use Reflector to copy (from mscorlib) the code and have your own (the link above has a copy/paste example). Connect and share knowledge within a single location that is structured and easy to search. Connect and share knowledge within a single location that is structured and easy to search. There's nothing within C++ that already does this, but it's pretty easy to do this yourself. There is no way that I know of but you can implement one with static members.
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