c# - Casting an IEnumerable to IEnumerable with reflection -

c# - Casting an IEnumerable to IEnumerable<T> with reflection -

so, need phone call 3rd party method, has signature this

thirdpartymethod<t>(ienumerable<t> items)

my problem don't know type of object @ compile time.

at compile time have this

ienumerable myobject; type typeofenumerableihave;

sooo..can reflection help me out here somehow?

for simplicity sake, pretend have method this

void dowork(ienumerable items, type type) { //in here have phone call thirdpartymethod<t>(ienumerable<t> items); }

since have ienumerable myobject; , signature thirdpartymethod<t>(ienumerable<t> items) able utilize cast():

thirdpartymethod(myobject.cast<t>())

if don't know t type @ compile time should provide @ runtime.

consider third-party library looks this

public static class external { public static void thirdpartymethod<t>(ienumerable<t> items) { console.writeline(typeof(t).name); } }

if have following

type thetype = typeof(int); ienumerable myobject = new object[0];

you can generic methods thirdpartymethod , cast @ runtime

var targetmethod = typeof(external).getmethod("thirdpartymethod", bindingflags.static | bindingflags.public); var targetgenericmethod = targetmethod.makegenericmethod(new type[] { thetype }); var castmethod = typeof(enumerable).getmethod("cast", bindingflags.static | bindingflags.public); var caxtgenericmethod = castmethod.makegenericmethod(new type[] { thetype });

finally phone call method:

targetgenericmethod.invoke(null, new object[] { caxtgenericmethod.invoke(null, new object[] { myobject }) });

c# reflection ienumerable