c# - Cannot convert from 'System.Type' to myself defined interface -

i defined own iexportable interface, , use as

public static someaction<b>(ilist<t> data) t : iexportable {     var ttype = typeof(t);     ilist<b> blists = somemethod(ttype);     //... }  

that somemethod is:

list<b> somemethod(iexportable exportdata) {    // somethings } 

but when run application error:

the best overloaded method match somemethod(iexportable)has invalid arguments cannot convert 'system.type' 'ifileexport'
mistake?

typeof(t) returns type object has meta information class represented t. somemethod looking object extends iexportable, want create object t extends iexportable. have few options this. straight forward option may add new constraint on generic paramter , use t's default constructor.

//notice i've added generic paramters , t.  looks may  //have missed adding parameters or have specified many types. public static someaction<a, b, t>(ilist<t> data) t : iexportable, new() {     t ttype = new t();     ilist<b> blists = somemethod(ttype);     //... }  

i've explicitly stated type of ttype better illustrate what's going on in code:

public static someaction<b>(ilist<t> data) t : iexportable {     //notice typeof returns.     system.type ttype = typeof(t);     ilist<b> blists = somemethod(ttype);     //... }