NU
Newtonsoft.Json.JsonConvert.SerializeObject(new {foo = "bar"})
NU
Object obj=new Object();
obj="hi";
string str1=Convert.ToString(obj);
string str2=obj.ToString();
string str3= obj as string;
string str4=(string)obj;
NU
new Guid((System.Byte[])this.GUID).ToString()