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Is it possible to get only initialized properties in a C# class


By : Jones417
Date : September 16 2020, 11:00 AM
may help you . First, these are properties, not attributes. Attributes are a different language construct in C#. We've edited your question accordingly.
Second, using an object initializer as in your example with classInstance is equivalent to calling the default constructor, then the setter of the two first properties.
code :


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Can a c#.net class be automatically initialized by databinding to one of the properties of the class?


By : user3250665
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I am following a tutorial on http://msdn.microsoft.com/en-us/wp7trainingcourse_usingbingmapslab_topic3#_Toc271039355. , The PushpinCatalog class was created during XAML processing.
code :
<ListBox.DataContext>
    <models:PushpinCatalog /> - PushpinCatalog instance creation
 </ListBox.DataContext>

Swift: class and properties - all only initialized once


By : user3460967
Date : March 29 2020, 07:55 AM
it helps some times I'm looking to have a class or struct (does not matter) with properties, where everything may only be initialized once in the app. Any attempt to modify the class or its properties will fail or not be possible. , What you want is somewhat unusual, but it is possible.
code :
public struct ScreenInfo {
  private static var _scaleFactor: Int?
  public static var scaleFactor: Int? {
    set {
      if _scaleFactor == nil {
        _scaleFactor = newValue
      } else {
        // Optionally throw an exception or something
      }
    }
    get {
      return _scaleFactor
    }
  }
}

ScreenInfo.scaleFactor       // nil
ScreenInfo.scaleFactor = 5
ScreenInfo.scaleFactor       // 5
ScreenInfo.scaleFactor = 15
ScreenInfo.scaleFactor       // 5

Generic class check which properties were initialized


By : rvanwaay
Date : March 29 2020, 07:55 AM
should help you out Is there a way how I can check from an instantiated class which properties were initially set? , Given a class like this:
code :
private class Person
{
    public int Id { get; set; }
    public string Name { get; set; }
    public int Age { get; set; }
}
public int? Age { get; set; }
public bool AgeWasSet { get; private set; }
private int _age;
public int Age 
{
    get { return _age; }
    set { _age = value; AgeWasSet = true; }
}
public interface IFieldInitializationInfo
{
    string[] GetUninitializedFields();    // or maybe PropertyInfo[]
}

In C#, Do Properties of a Class Get Initialized Concurrently Or Sequentially?


By : zhao
Date : March 29 2020, 07:55 AM
Does that help Suppose I'm composing an object whose properties need to be converted from other values determined in a method, such as: , It is important to understand what happens here.
This statement:
code :
MyClass myClass = new MyClass
{
    Property1 = var1,
    Property2 = var2
};
MyClass temp = new MyClass();
temp.Property1 = var1;
temp.Property2 = var2;
MyClass myClass = temp;
MyClass myClass = new MyClass();
// what if some other code can access myClass here, because you're really
// assigning to a property or to a field?
myClass.Property1 = var1;
// then this assignment above wouldn't be done yet
...

Typescript class properties not being initialized


By : Alex Chantsev
Date : March 29 2020, 07:55 AM
Hope this helps The problem is the order of execution. Field initializers are just syntactic sugar for fields assigned in the constructor, but the first statement executed in a constructor is the base constructor. If we look at generated code the problem becomes more clear:
code :
var PointStyle = /** @class */ (function (_super) {
    __extends(PointStyle, _super);
    function PointStyle() {
        // Super executed here !
        var _this = _super !== null && _super.apply(this, arguments) || this;
        //Field initialization here after createStyle is executed!
        _this.FILL_COLOR = 'rgba(255,255,255,0.4)';
        _this.STROKE_COLOR = '#3399CC';
        _this.STROKE_WIDTH = 1.25;
        _this.RADIUS = 5;
        return _this;
    }
    ...
    return PointStyle;
}(LayerStyle));
exports.PointStyle = P
export abstract class LayerStyle {
    protected configuration: { [key: string]: string };
    protected style: ol.style.Style[];

    constructor(config: { [key: string]: string }, callInit: boolean = true) {
        this.configuration = config;
        if(!callInit) this.createStyle();
    }

    protected abstract createStyle(): void;

    getStyle() {
        return this.style;
    }
}

export class PointStyle extends LayerStyle {
    constructor(config: { [key: string]: string }, callInit: boolean = true) {
        super(config, false);
        if(callInit) this.createStyle();
    }
    //default values
    FILL_COLOR = 'rgba(255,255,255,0.4)';
    STROKE_COLOR = '#3399CC';
    STROKE_WIDTH = 1.25;
    RADIUS = 5;

    createStyle() {
        let fillColor = this.FILL_COLOR;
        let strokeColor = this.STROKE_COLOR;
        let strokeWidth = this.STROKE_WIDTH;
        let radius = this.RADIUS;
    }
}
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