All Questions
Tagged with polymorphism c#
1,295
questions
1
vote
0
answers
29
views
Complex multi level EF Core 8 inheritance issue
Please consider the following:
DB Context:
// DbContext.cs
public partial class OperationsDbContext : DbContext
{
public virtual DbSet<AnimalBase> AnimalBases { get; set; }
public virtual ...
- 63
1
vote
1
answer
31
views
polymorphic type displaying as blank in the inspector
It's not easy to specifically explain what the problem is, and the code through which the problem could be originating is extensive, and I am uncertain how to narrow it down beyond what I already have,...
- 178
-1
votes
1
answer
41
views
How to set up classes for parsing custom data types in C#
I'm working on a saving/loading system, and I'm trying to serialize and deserialize various objects. I'm working in Unity, and I've created one custom class for the game objects and their behaviours, ...
- 89
0
votes
1
answer
51
views
How do I match types when trying to write polymorphic classes in C# or am I using the wrong pattern?
TLDR; I'm looking for a pattern that allows me to have a base class and derived classes that handle objects of various different classes but which are all derived from one interface/base class - ...
1
vote
1
answer
40
views
Passing derived class to a method
newbie here, trying to figure out best way to achieve the following:
Have a base class:
public class MessageBaseDto
{
public string AssetId { get; set; }
}
And 2 derived classes:
public class ...
- 11
0
votes
0
answers
51
views
Downcast with swig director classes
I have the following C++ code
class CPPSession
{
};
class CPPModule
{
virtual CPPSession* create_session()
{
return new CPPSession;
}
virtual void do_something(CPPSession* ...
- 315
0
votes
1
answer
24
views
System.InvalidCastException while inheriting a class
I've created a class for a binary search tree called BSTree. I want to create a class for AVL tree called AVLTree and inherit BSTree class. But when I override a virtual method from BSTree class in ...
0
votes
1
answer
36
views
Hide generic type arguments behind concrete type results in CS0535
I've a rather academic question: why is it technically not possible to use the following code?
// abstractions
public record MappingRequest<TContract, TEntity>(
TContract Contract, TEntity ...
- 5,063
-2
votes
1
answer
61
views
How would you create a list/array containing variables instantiated from classes in C#?
So, I've been trying to create a list in C# that will contain variables that are instantiations of classes. I'm still quite new to C# and this was just supposed to be a practice exercise, but lists ...
-1
votes
2
answers
74
views
Difference between creating objects with master/sub class "Cat cat1 = new Cat(); vs Animal cat2 = new Cat();"
(First time posting in Stackoverflow, so If I did it wrong, I am sorry =( )
What is the difference between creating an object from its class or the class its inheriting from?
I made this code:
...
- 1
0
votes
3
answers
151
views
is it possible to fully override a property in c#?
i have a parent class coming from a library i don't control, and i'm trying to create a child class that overrides a public property in that class. i found that the answer is to use the new keyword, ...
- 31
0
votes
2
answers
111
views
C# class inheritance and polymorphism with polymorphic fields
I'm running into an occasional design issue with classes, mostly in some video game stuff. The problem arises when a class that extends another class (such as a Player) has a field that is also a ...
- 133
0
votes
2
answers
571
views
Can I customize and shorten the polymorphic type discriminator property name and value when serializing?
Is it possible to shorten the type discriminator property name and value during serialization/deserialization? I don't have access to the types itself so in my case it should be done by configuring ...
- 18.9k
0
votes
1
answer
2k
views
Polymorphic Json Serialization/Deserialization with custom Converter broken with .NET 8
I have some classes using polymorphism and I need to send them via an OData Controller to the client. On the client I have added Converters to JsonSerializerOptions in order to determine the correct ...
- 51
0
votes
0
answers
52
views
How can I write one method that accepts either Graphics or XGraphics as argument?
I have code that uses Graphics class to draw string on a PNG image, and very similar code to generate PDF (using PdfSharp)
void DrawText(Graphics gfx, string text) // used to draw PNG images
{
// ...
- 12.5k