vb.net - end-user defined code - how to use existing classes and objects from the ExecutingAssembly -

i have winform similar op has in how load internal class in end-user compiled code ? (advanced) have textbox source of end-user code, , compiled on fly when hit button.

here parts of code (where copied how load internal class in end-user compiled code ? (advanced) :

imports system imports system.codedom.compiler imports system.reflection imports system.text  public class form1  private sub executeb_click(byval sender system.object, byval e system.eventargs) handles executeb.click     dim code string = me.codetoexec.text      dim compilerresult compilerresults     compilerresult = compile(code) end sub  public function compile(byval code string) compilerresults     dim codeprovider new vbcodeprovider     dim codecompiler system.codedom.compiler.codedomprovider = codedomprovider.createprovider("visualbasic")      dim parameters new system.codedom.compiler.compilerparameters     parameters.generateexecutable = false     parameters.referencedassemblies.add("system.dll")     parameters.referencedassemblies.add("system.windows.forms.dll")     parameters.referencedassemblies.add("microsoft.visualbasic.dll")      dim compilerresult compilerresults = codecompiler.compileassemblyfromsource(parameters, code)      if compilerresult.errors.haserrors         compiletb.clear()         = 0 compilerresult.errors.count - 1             compiletb.appendtext(compilerresult.errors(i).errortext & vbcrlf)         next         return nothing     else         return compilerresult     end if end function  end class 

my controls are: codetoexec textbox user puts custom code, compiletb textbox errors listed, , executeb button. there other classes , object in program, , here 1 of classes want use:

public class exceptioncriteria  private _criterianame string public property criterianame string             criterianame = _criterianame     end     set(value string)         _criterianame = value     end set end property  private _ruleset list(of string) public property ruleset list(of string)             ruleset = _ruleset     end     set(value list(of string))         _ruleset = value     end set end property  private _serializationfilepath string public property serializationfilepath string             serializationfilepath = _serializationfilepath     end     set(value string)         _serializationfilepath = value     end set end property  public sub addrule(newrule string)     if isnothing(_ruleset)         _ruleset = new list(of string)     end if     _ruleset.add(newrule) end sub  end class 

and here 1 of members want use/set in form1 class:

public comparisondate date = #2/20/2015# 

my problem is, want access/modify objects, members, properties in executing assembly , create new objects based on custom classes there. how can this?

i have bumped answer, lacked was

parameters.referencedassemblies.add(assembly.getexecutingassembly().location) 

then needed make procedures , members shared. hope helps newbies me happen have same problem , pass page.