Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing. How does the inclusion of stochastic volatility in option pricing models impact the valuation of exotic options? Making statements based on opinion; back them up with references or personal experience. Get properties of one object from the list of objects, Why on earth are people paying for digital real estate? How to Individuate an element of a list using reflection? Characters with only one possible next character. How do I create an auto-implemented list property in a class in C#? Has a bill ever failed a house of Congress unanimously? Is there a distinction between the diminutive suffices -l and -chen? By the way, if I were writing the code above today, I'd do the equality check differently, given the complexities of . Asking for help, clarification, or responding to other answers. I can reflect on the model to give the user the data structures, they can then direct that data to other streams. Why are you using reflection to do this? Not the answer you're looking for? Either specify the type of T, or if you want to make it generic, you'll need to make the parent class generic. Just a suggestion. You do it using one of First, FirstOrDefault, Single or SingleOrDefault dependng on your requirements, I suspect the most appropriate is SingeOrDefault based on the fact an ID is usually unique, so you only ever expect one single item with a specified ID. How to get the list of properties within list of a class? A for loop would be the fastest I think, followed closely by linq (minimal overhead if you don't do use closures). What is the best way to give a C# auto-property an initial value? TryGetProperty(ReadOnlySpan<Char>, JsonElement) Looks for a property named propertyName in the current object, returning a value that indicates whether or not such a property exists. Travelling from Frankfurt airport to Mainz with lot of luggage. Is it even possible do such a thing, creating a property for type List ? That's not exactly generic, but for a start it's a lot shorter than writing and calling a method each time. Further to the other answers suggesting LINQ, another alternative in this case would be to use the FindAll instance method: Thanks for contributing an answer to Stack Overflow! Will just the increase in height of water column increase pressure or does mass play any role in it? Why on earth are people paying for digital real estate? I apologize in advance if this question is really simple/obvious. Invitation to help writing and submitting papers -- how does this scam work? The if block makes sure that you arent trying to reflect on a null object. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, Your question isn't very clear at the moment. (LINQ is usually slower than non-generic code). Languages which give you access to the AST to modify during compilation? An array of strings that corresponds to the properties found directly in the given object. If you need to reflect over the entire list, you will need to set this up in a loop. I am trying to get the values from objects inside a list which is part of a main object. Why did the Apple III have more heating problems than the Altair? Python zip magic for classes instead of tuples. Non-definability of graph 3-colorability in first-order logic. Recursively Get Properties & Child Properties Of A Class. Has a bill ever failed a house of Congress unanimously? Can a user with db_ddladmin elevate their privileges to db_owner. By using the Obj-C Runtime Library, I had access to the properties the way I wanted: Share. (Ep. Are there ethnically non-Chinese members of the CCP right now? What does that mean? Can I contact the editor with relevant personal information in hope to speed-up the review process? Connect and share knowledge within a single location that is structured and easy to search. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, Please show the code you're using to call, you need to check for a collection type when you arrive at a certain property and if it is a collection you need to iterate over it and get those properties of the elements of this collection. Solution 1 Here's an example using the Type.GetGenericArguments () [ ^] method: C# public class Example { public List<int?> Target { get; set; } } Type type = typeof (Example).GetProperty ( "Target" ).PropertyType; Type generic = type.GetGenericArguments ().First (); Console.WriteLine ($ "Type {type} has generic argument {generic}" ); Why did the Apple III have more heating problems than the Altair? Can I get a property from a collection using Linq in a more elegant way than this? How should I select appropriate capacitors to ensure compliance with IEC/EN 61000-4-2:2009 and IEC/EN 61000-4-5:2014 standards for my device? To learn more, see our tips on writing great answers. Using reflection to get values from properties from a list of a class, Why on earth are people paying for digital real estate? Thanks for contributing an answer to Stack Overflow! Yes you're right, I saw that too. These are the top rated real world C++ (Cpp) examples of g_object_get_property extracted from open source projects. If I have a list of objects that have a property, how can I extract a list of of all of those properties? For example, what would you expect to happen if a class had a child reference to itself? What is the reason for a public var and a private setter ? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. You can use the Enumerable.Where extension method: var matches = myList.Where (p => p.Name == nameToExtract); Returns an IEnumerable<SampleClass>. (Ep. 587), The Overflow #185: The hardest part of software is requirements, Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, Temporary policy: Generative AI (e.g., ChatGPT) is banned, Testing native, sponsored banner ads on Stack Overflow (starting July 6), accesing the value of properties using reflection, Using Reflection to discover an objects property list, How to get property information from a class, Get Class Property List With String Value, C# Reflection - Get Property of an Object, Using C# Reflection, how to get Object's properties and their values if that Object is a property of Object that is inside of the List. Is religious confession legally privileged? Why not just have a UI that allows them to just set a team name etc without it being tied to your class layout. How can I remove a mystery pipe in basement wall and floor? Are there ethnically non-Chinese members of the CCP right now? What does that mean? Will just the increase in height of water column increase pressure or does mass play any role in it? Do I remove the screw keeper on a self-grounding outlet? Why do keywords have to be reserved words? 15amp 120v adaptor plug for old 6-20 250v receptacle? Then you can get the type even if the list happens to be null or empty: When you call the MyListView constructor, do you know the type of the SomeObject class? Has a bill ever failed a house of Congress unanimously? How do I get a consistent byte representation of strings in C# without manually specifying an encoding? What may seem relatively easy at first quickly becomes complicated where typed collections are involved that do not implement IEnumerable<T>. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Why did the Apple III have more heating problems than the Altair? Will just the increase in height of water column increase pressure or does mass play any role in it? You could use reflection to iterate over the type of Collection. How to play the "Ped" symbol when there's no corresponding release symbol. Checking if a property in a list of objects is equal for all items, Searching if value exists in a list of objects using Linq, how to check if List element contains an item with a Particular Property Value, LINQ: Checking if a string (variable) contains any of the list of properties, Checking if a list of objects contains a property, Check if List element contains an item with a Particular Property Value. I've coded simple Library and Book classes for this: So I want to get Book instances which certain fields is equal to certain strings, like. The object is an EntityFramework entity so the children would be other entities. Create a property with predefined list of values C#. Does being overturned on appeal have consequences for the careers of trial judges? How to retrieve the value of a number of properties? What does that mean? Asking for help, clarification, or responding to other answers. To learn more, see our tips on writing great answers. To do so, call the free method from your script or delete the instance from C++. If you are not aware of the LINQ and then try this. Can I ask a specific person to leave my defence meeting? Connect and share knowledge within a single location that is structured and easy to search. Making statements based on opinion; back them up with references or personal experience. How can I learn wizard spells as a warlock without multiclassing? 587), The Overflow #185: The hardest part of software is requirements, Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, Temporary policy: Generative AI (e.g., ChatGPT) is banned, Testing native, sponsored banner ads on Stack Overflow (starting July 6). To learn more, see our tips on writing great answers. Languages which give you access to the AST to modify during compilation? In C#, Generically get the property value within a List object, Why on earth are people paying for digital real estate? This works just fine for the first object in the list. Typo in cover letter of the journal name where my manuscript is currently under review. Find centralized, trusted content and collaborate around the technologies you use most. English equivalent for the Arabic saying: "A hungry man can't enjoy the beauty of the sunset". What could cause the Nikon D7500 display to look like a cartoon/colour blocking? Assuming you want a filtered List, simply call .ToList () on the above. How does the theory of evolution make it less likely that the world is designed? (Ep. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. It can also select unique objects, a specified number of objects, or objects in a specified position in an array.