Dynamic Copy of Objects

In my project, i faced a scenario like :

I have two classes For Example 'Teacher' and 'Student'
I have some common properties in two classes

class Teacher
{
        public int intId { get; set; }  //1
        public string strName { get; set; } //2
        public string strAddress { get; set; } //3
        public List<string> Phone { get; set; }
        public double dblSalary { get; set; }
        public string strPAN { get; set; }

}

class Student
    {
        public int intId { get; set; }  //1
        public string strName { get; set; } //2
        public string strAddress { get; set; } //3
        public string strPhone { get; set; }
        public string  strClass { get; set; }
        public char chrSection { get; set; }
    }

now my requirement is : Assign a Student as a Teacher

simply i write a code like this.

private Teacher  fnCopyObject(Student objStdnt)
{
Teacher objTeacher  = new Teacher ()
                    {
                        intId = objStdnt.intId,
                        strName = objStdnt.strName,
                        Phone = new List<string>() { objStdnt.strPhone },
                        strAddress = objStdnt.strAddress
                    };
return objTeacher ;
}

But..........
what if there are more than 50 or 100 common properties in both classes?
Have to take each property and assign like this?
I think this is not a good practice.

Hence, I came here with a solution:

This code is generic , and can be applied between any two objects that you want to copy and have common properties.

private D Copy<S, D>(object sourceObj) where D : new()
        {
            D destinationObj = new D();
            if (!ReferenceEquals(sourceObj, null))
            {
                System.Reflection.PropertyInfo[] dnSourceAttributeLst = typeof(S).GetProperties();
                System.Reflection.PropertyInfo[] dnDestAttributeLst = typeof(D).GetProperties();

                if (!ReferenceEquals(dnSourceAttributeLst, null))
                {
                    foreach (System.Reflection.PropertyInfo Item in dnSourceAttributeLst)
                    {
                        if (!ReferenceEquals(dnDestAttributeLst.FirstOrDefault(x => x.Name == Item.Name), null))
                        {
                            if (!ReferenceEquals(dnDestAttributeLst.FirstOrDefault(x => x.Name == Item.Name), null))
                            {
                                if (Item.GetValue(sourceObj, null).GetType().Name == dnDestAttributeLst.FirstOrDefault(x => x.Name == Item.Name).PropertyType.Name)
                                {
                                    if (Item.GetValue(sourceObj, null).GetType().Name == "Int32")
                                    {
                                        dnDestAttributeLst.Where(x => x.Name == Item.Name).FirstOrDefault().SetValue(destinationObj, (int)Item.GetValue(sourceObj, null), null);
                                    }
                                    if (Item.GetValue(sourceObj, null).GetType().Name == "String")
                                    {
                                        dnDestAttributeLst.Where(x => x.Name == Item.Name).FirstOrDefault().SetValue(destinationObj, (string)Item.GetValue(sourceObj, null), null);
                                    }
                                }
                            }

                        }
                    }
                }
            }
            return destinationObj;

        }

We need to call this Function as :

//Initail Object

 Student objStudentSource= new Student()
            {
                intId = 121,
                strName = "TestStudentName",
                strAddress = "addr",
                strPhone = "8542121315",
                strClass = "1st",
                chrSection = 'A'
            };

//Function Calling

Teacher oTeacher = objProgram.Copy<Student,Teacher>(objStudentSource);