var obj1 = new A()
{
Name = "abc",
Id = 1
}
var obj2 = new B()
{
Place = "XYZ",
Pincode = 123456
}
var obj3 = new C()
{
Mark = 100,
Standard = "Tenth"
}
var myList = new List<object>();
myList .add(obj1);
myList .add(obj2);
myList .add(obj3);
This is my code structure. I need to access the properties of the myList
object. ie) I need to access the properties like Name
, Id
, Place
, Pincode
, Mark
, Standard
from the myList
object and it's corresponding values.
How to achieve it?
You can try something like below. Working code here
public static List<List<string>> GetProperties(List<object> myList)
{
// If you don't want two lists, you can use Dictionary<key, value>
List<string> props = new List<string>();
List<string> values = new List<string>();
foreach (var a in myList)
{
if(a == null)
continue;
var propsInfo = a.GetType().GetProperties();
foreach (var prop in propsInfo)
{
if(!props.Contains(prop.Name))
{
props.Add(prop.Name);
values.Add(prop.GetValue(a, null).ToString());
}
}
}
return new List<List<string>> { props, values};
}
As I wrote in my comment, usually keeping completely different types in the same collection is wrong. However, that doesn't mean that's always the case, and so assuming you have a good enough reason to do that - here's one option to do it.
Assuming c# 7 or higher, your best option would probably be to (ab)use switch with pattern matching :
foreach(var obj in myList)
{
switch(obj)
{
case A a:
DoSomethingWithA(a);
break;
case B b:
DoSomethingWithB(b);
break;
}
}
Here is some code I use to compare two objects. I don't know if this is your scenario but I hope it helps you get what you need it for.
protected List<string> GetProperties(List<object> myList)
{
List<string> props = new List<string>();
foreach (var a in myList)
{
if(a == null)
continue;
var propsInfo = a.GetType().GetProperties();
foreach (var prop in propsInfo)
{
if(!props.Contains(prop.Name))
{
props.Add(prop.Name);
}
}
}
return props;
}
If you are simply looking to get values out of an object (property values), that is a different story.
foreach (objectType obj in mylist)
{
someVariable1 = obj.name;
someVariable2 = obj.Id;
}
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