The extension method of C# and the customization of OA Credit disk platform
The following is illustrated by a code example
Define a Npc class, OA credit tray platform customization (enterprise E: 217 1793)
/ / define the Npc class
Public class Npc
{
/ / define field variables
Private int npcId
Private string name
Public Npc () {}
/ / define the properties corresponding to field variables
Public int NpcID
{
Get {return npcId;}
Set {npcId = value;}
}
Public string Name
{
Get {return name;}
Set {name = value;}
}
}
When you use the Npc class, you want to call a method that sets both NpcId and Name, but you don't write such a method when defining the Npc class. What to do, you can add such a method directly to the Npc class, or you can derive a subclass from the Npc class, and then add a method that meets the requirements in the subclass. Another way is to extend a method directly into the Npc class as we're going to talk about today.
The following code extends a new method directly to the Npc class
/ / extend the Npc class
Public static class ExtendNpc
{
/ / extend a method to the Npc class
/ / SetIDName (this Npc npc, int id, string name)
Public static void SetIDName (this Npc npc, int id, string name)
{
Npc.NpcID = id
Npc.Name = name
}
}
