ValidRunTimeGenericResolution.cs

var instance = new Thing();

var method = typeof(Thing).GetMethod("GenericMethod");

var methodOfInt32 = method.MakeGenericMethod(typeof(int));
methodOfInt32.Invoke(instance, new object[] { 1 });

var methodOfBoolean = method.MakeGenericMethod(typeof(bool));
methodOfBoolean.Invoke(instance, new object[] { true });

var methodOfString = method.MakeGenericMethod(typeof(string));
methodOfString.Invoke(instance, new object[] { "Cantaloupe Pantaloons" });