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POhow to overwrite the inherited property values of derived class with that of base class instance
 

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    <p>I have a <strong>Human</strong> class with simple two properties <em>Age</em> and <em>Name</em>. Then, I have another class <strong>Woman</strong> derived from the <strong>Human</strong> class and it has one extra properties <em>FavCream</em>. Now, I have two different instances of these classes say <strong>h1</strong>(of base class <strong>Human</strong>) and <strong>w1</strong> (of derived class <strong>Woman</strong>) and I simply want to overwrite all the derived properties of <strong>w1</strong> with the corresponding values from <strong>h1</strong>. </p> <p>However, I did not found this built-in. I do not like to create a public method on Woman class which manually does the assignment job. I think, I can create a utility function using reflection feature but looking for proven way to deal with this.</p> <p>Is this impossible? Can not we have any advantage of inheritance in this scenario? or Is this illogical? </p> <p>Please have patience with me. Thanks!</p> <pre><code>class Program { private static Woman _aWoman; static void Main(string[] args) { var aHuman = new Human() { Age = 25, Name = "Ram" }; Program._aWoman = new Woman() { Age = 22, FavCream = "Ponds" , Name = "Sita"}; Console.WriteLine("Woman is " + Program._aWoman.ToString()); // prints Age = 22 Name = Sita FavCream = Ponds Console.WriteLine("Human is " + aHuman.ToString()); // prints Age = 25 Name = Ram **// Do something here so woman derived property has auto over written with property of human instance.** Console.WriteLine("after overwriting, woman is " + _aWoman.ToString()); // The result I m looking for here is "Age = 25 Name = Ram FavCream = Ponds" } } internal class Human { public int Age { get; set; } public string Name { get; set; } public override string ToString() { return "Age = " + this.Age + " Name = " + this.Name; } } internal class Woman: Human { public string FavCream { get; set; } public override string ToString() { return base.ToString() + " FavCream = " + this.FavCream; } } </code></pre> <p><strong>UPDATE:</strong> I ended on creating a method and copied the base class properties using reflection. Also, I tried to enhance this with generic restriction but not succeeded yet. </p> <p>Thanks everyone for such quick reply.</p> <pre><code>// Trying to make it generic... but could not enforce contraint that T must be base class of 'this' public void Overwrite&lt;T&gt;(T baseInstance) where T : Human { Type baseType = baseInstance.GetType(); Type derivedType = this.GetType(); PropertyInfo[] propInfos = null; propInfos = baseType.GetProperties(); foreach (PropertyInfo eachProp in propInfos) { PropertyInfo baseProp = (baseType).GetProperty(eachProp.Name); object baseVal = baseProp.GetValue(baseInstance, null); eachProp.SetValue(this, baseVal, null); } } </code></pre>
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    1. COwhat if you have got two instances of Human h1 and h2? from where you want w1 to get properties from ?
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      1. USAshley John
 

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