i have a problem setting the value od an enumeration. 

In my code I define this enumeration: 

    public enum PartType
    {
        Application,
        Operating_System,
        Hardware
    } 
    public PartType Part { get; set; }

Then, in the same class I try to set a value of this eumeration in this way (how I have read on the C# documentation):

   if (row["part"] == "a")
   {
        Part.Application;
   }

But it signed as error. Why? What am I missing? How can I solve?