How to Get all properties, ( ChildProperties included ) and Values from objet

Question

_{Tuesday, April 28, 2015 12:41 PM}

Hi,

 according to this scenario :

 public class Product
    {
        public int ProductId { get; set; }
        public string ProductName { get; set; }
        public Category Category { get; set; }
        public List<ProductItems> CategoryList { get; set; }
    }

 public class Category
    {
        public int CategoryId { get; set; }
        public string CategoryName { get; set; }
    }

public class ProductItems
    {
        public int ProductItemsId { get; set; }
        public string ProductItemsName { get; set; }
    }

public class PropertyResult
{
    public string PropertyName { get; set; }
    public string PropertyType { get; set; }
    public string PropertyValue { get; set; }
  
}

I would like to get all properties and child properties and child of  child properties  and child of child of child .......................

So I would like to buid a list of all properties ( hierachically) and assign it to :

  var result = new List<PropertyResult>
            {
                //TODO: put result here
            };

Best regards.
 

All replies (3)

_{Tuesday, April 28, 2015 2:50 PM}

@dienguis

why?

have you considered using reflection?

Study:  https://msdn.microsoft.com/en-us/library/aky14axb(v=vs.110).aspx "Type.GetProperties Method"

and also:  http://stackoverflow.com/questions/737151/how-to-get-the-list-of-properties-of-a-class 

Sample:

void Main()
{
    Product myProduct = new Product();
    foreach(var prop in myProduct.GetType().GetProperties()) {
    Console.WriteLine("{0}={1}", prop.Name, prop.GetValue(myProduct, null));
    }
}

public class Product
{
    public int ProductId { get; set; }
    public string ProductName { get; set; }
    public Category Category { get; set; }
    public List<ProductItems> CategoryList { get; set; }
}

public class Category
{
    public int CategoryId { get; set; }
    public string CategoryName { get; set; }
}

public class ProductItems
{
    public int ProductItemsId { get; set; }
    public string ProductItemsName { get; set; }
}

public class PropertyResult
{
    public string PropertyName { get; set; }
    public string PropertyType { get; set; }
    public string PropertyValue { get; set; }
}

output:

ProductId=0
ProductName=
Category=
CategoryList=

dienguis, once you have the properties of an instance of one object, you'll likely need to use recursion.

FWIW, it seems like a lot of work, so again, i ask "Why"?

see http://weblogs.asp.net/gerrylowry/clarity-is-important-both-in-question-and-in-answer 

---

_{Thursday, June 11, 2015 3:51 AM}

Hi, I would like to iterate trough my Product object and display values as follow :
if property type is value type (string, int double, ...), I dispay propertyName and Value.
if property type is Collection ( List, Ienumerable, ....), I recursively iterate trough list .
if property type is class, I go into class and display all child propertis of class that are string or int type.

  public class Product
    {
        public int ProductId { get; set; }
        public string ProductName { get; set; }
        public Category Category { get; set; }
        public List<ProductItems> CategoryList { get; set; }
    }

    public class Category
    {
        public int CategoryId { get; set; }
        public string CategoryName { get; set; }
    }

    public class ProductItems
    {
        public int ProductItemsId { get; set; }
        public string ProductItemsName { get; set; }
    }

    public class PropertyResult
    {
        public string PropertyName { get; set; }
        public string PropertyType { get; set; }
        public string PropertyValue { get; set; }

    }

Applied to product class, my algorithm must display result as follow :

propertyName, PropertyValue
ProductId,1
ProductName, lemon
Category.CategoryId,4
Category.CategoryName, vegetables
ProductItems.ProductItemsId,4
ProductItems.ProductItemsName, xxxx
ProductItems.ProductItemsId,5
ProductItems.ProductItemsName, yyyy

Best regards

---

_{Thursday, June 11, 2015 8:55 PM}

Add a method to each class called ToString().  In product it would look something like

public override string ToString()
{
   return String.Format("ProductId,{0}\nProductName,{1},\n{2},\n{3}", 
                         ProductId, 
                         ProductName, 
                         Category.ToString(),
                         CategoryList.Select(c=>c.ToString()).Aggregate((current,next)=> current + ",\n" + next) 
                        );
}

Every other class will have something similar.  You will need to tweek the commas and newlines to get the exact result that you want.

var productDetails = someProduct.ToString();