I have a C# Dictionary as follows:

Dictionary< string, myClass> dc = new Dictionary< string, myClass>();

myClass is defined :

internal class myClass
{
   public string empID;
   public Decimal salary;
}

I process a file in a loop and set the myClass values then write to the Dictionary:

foreach ( DataRow row in dt.Rows)
{
   myClass mc = new myClass();
   mc.empID = row[0].ToString();
   mc.salary = Decimal.Parse(row[1].ToString());
   dc[mc.empID] = mc;
}

When I come to print the end result, the keys are correct but the dictionary values are all the same as the last row process in the above loop:

foreach ( var item in dc )
{
   myClass mc = item.Value;
   Console.writeLine( "Key : " + item.Key.ToString() + " Emp " + mc.empID + " sal " + mc.salary.ToString() );
}

With inputs as :

["0101","25000"]
["0202","27000"]
["0303","19999"]

The output is:

Key : 0101 Emp 0303 sal 19999
Key : 0202 Emp 0303 sal 19999
Key : 0303 Emp 0303 sal 19999

What am I doing wrong?