c# - Call a function on AddComponent( string variable ) - 


type thistype = stringvar.gettype(); thistype myscript = gameobject.addcomponent(stringvar);  myscript.runcustomfunction();

this doesn't work, , believe because cannot cast variable type if don't know variable type @ compile time (rather run), therefore unable directly access component added.

i have gameitem class pulls default values script, puts them dictionary. based on dictionary entry "functionscript","myscript", need attach myscript object, pass dictionary entries.

alternatively, inefficient , ask item class variables on myscript class, i'd rather avoid.

system.type actual type, same system.int32, or system.guid. can't use variable static identifier in code since compiler has no idea type is.

i think trying construct concrete type based on name.

you can use activator.createinstance this, long know type name , assembly name.

var typename = "mytype"; var mytype = activator.createinstance("myassembly", typename);

you use dynamic keyword let dlr handle heavy lifting you.

dynamic mytype = activator.createinstance("myassembly", typename); mytype.runcustomfunction();

if type inherits common base type, or implements interface, can cast type , call method.

//safe cast base type var mytype = activator.createinstance("myassembly", typename) basetype;  //or safe cast interface var mytype = activator.createinstance("myassembly", typename) imytype;

however, if types not inherit known type, know have method called runcustomfunction , don't want use dynamic can use little reflection invoke method.

//create system.type using assembly qualified name var typename = "mytype"; var assemblyqualifiedname = string.format("myassembly.{0}", typename); var mytype = type.gettype(assemblyqualifiedname);  //call activator overload, `instance` system.object var instance = activator.createinstance(mytype);  //use reflection invoke method mytype.invokemember(    "runcustomfunction", //member name    bindingflags.public | bindingflags.instance | bindingflags.static,    null, //default binder    instance, //actual instance invoke method on    null //no arguments use null );

as can see, it's easier make types inherit base class or implement interface, can use reflection if want hard way :)


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