Returning a copy of a struct - c#

Hi,

I have a script that manages different types of tiles, all info of a tile is grouped together in a struct "TileInfo". Now I have a method:

public static TileInfo GetTileInfo(int id)
{
return TileInfoList.GetTileInfo(id);
//Looks up the TileInfo var with ID == id and returns the correct struct
}

Now my question, will this return a copy of that struct, or the actual struct itself ? So when I use this method, and change the returned struct, will the original change ? If so, how do I return a copy so my original struct stays the way he was ? If not, just out of curiosity, how do I make it so it returns the actual struct ? :P (I need it to return a copy, but it's still interesting :P)

(I'm not sure if I'm saying it right "returning the actual struct", or is there a word for an instance of that struct (like "object" when we're talking about classes) or is it also just called an "object" ? :D)

Thanks !

-Pablo