c# - How to regenerate private accessor when the member specified could not be found -

i getting error message saying:

the member specified(setmodelfactory) not found. might need regenerate private accessor, or member may private , defined on base class. if latter true, need pass type defines member privateobject's constructor.

i try suggestion @ here, not work.

public void setmodelfactorytest()     {         availabilitybl target = new availabilitybl();         availabilityds ds = new availabilityds();         ds.enforceconstraints = false;          testbusinesslogic.businesslogic_availabilityblaccessor accessor = new testbusinesslogic.businesslogic_availabilityblaccessor(target);          // setup standard test data         this.setuptestdata(ds, null);         int newmodelid = 89;          // add dummy model row         this.setuptestmodel(newmodelid, ds);         accessor.mavailabilityds = ds;          int siteid = 22;         int platformid = 33;         string factoryname = "my cool factory";         datetime validuntil = new datetime(2015, 9, 27);          accessor.setmodelfactory(siteid, platformid, factoryname, validuntil);          assert.areequal(siteid, accessor.mavailabilityds.model[0].siteid, "setmodelfactory did not set siteid.");         assert.areequal(platformid, accessor.mavailabilityds.model[0].platformid, "setmodelfactory did not set platformid.");         assert.areequal(factoryname, accessor.mavailabilityds.model[0].factoryname, "setmodelfactory did not set factoryname.");         assert.areequal(validuntil, accessor.mavailabilityds.model[0].validuntil, "setmodelfactory did not set validuntil.");     } 

vscodegenaccessors.cs

internal void setmodelfactory(int siteid, int platformid, string factoryname, global::system.datetime validuntil) {     object[] args = new object[] {             siteid,             platformid,             factoryname,             validuntil};     m_privateobject.invoke("setmodelfactory", new system.type[] {                 typeof(int),                 typeof(int),                 typeof(string),                 typeof(global::system.datetime)}, args); }