using System;

using System.Text.RegularExpressions;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {           

        var tc = new TestClass();

        tc.Email = "";

        tc.Name = null;

        try

        {

            tc.IdentifyNullParameters();

        }

        catch (AggregateException ae)

        {

            Console.WriteLine(ae.InnerException.Message);

        }       

    }

}

​

public class TestClass

{

    private string _email;

    public string Email

    { 

        get => _email;

        set => _email = value;

    }

    private string _name;

    public string Name

    {

        get => _name;

        set

        {

            if (string.IsNullOrWhiteSpace(value))

            {

                throw new Exception("Organization name cannot be null, empty, or whitespaces.");

            }

            _name = value;  

        }

    }

    private int _someInt;

    public int SomeInt

    {

        get => _someInt;

        set => _someInt = value;

    }

    public SomeOtherClass SomeOtherClass { get; set; }

    public void IdentifyNullParameters()

    {

        var exceptionList = new List<Exception>();

        this.GetType().GetProperties().ToList().ForEach(x =>

                                                      {

                                                          if ((x.GetValue(this, null) == null)

                                                              || string.IsNullOrWhiteSpace(x.GetValue(this, null).ToString()))

                                                          { 

                                                              exceptionList.Add(new Exception(x.Name)); 

                                                          }

                                                      });

        if (exceptionList.Count > 0)

            throw new AggregateException(exceptionList);

    }

}

​

public class SomeOtherClass

{

    public int SomeOtherProperty { get; set; }  

}