Error while opening editor for custom control flow component in ssis 2012

hi,

i facing issue while trying open editor custom control flow component.  i tried copied dll package resides didn't help.  please let me know if doing wrong or how fix issue.

here code:

main class inherits task                         

namespace ssis.custom.controlflowui
{
        [dtstask  (
       displayname = "copytable",
       description = "a custom unzip task demonstration purposes.",
       tasktype = "customcomponent",
       uitypename = "copytabletaskui, copytable, version=1.0.0.0,culture=neutral, publickeytoken=9097a336d1055e0b")]

    public class copytable : task
    {
         #region override methods

            public override dtsexecresult validate(connections connections,
            variabledispenser variabledispenser, idtscomponentevents componentevents,
            idtslogging log)
            {
                return base.validate(connections, variabledispenser, componentevents, log);
            }

            public override dtsexecresult execute(connections connections, variabledispenser variabledispenser, idtscomponentevents componentevents, idtslogging log, object transaction)
            {
                try
                {
                    validateschema(@"ggn19\mssql12");

                    //   return success.
                    return dtsexecresult.success;
                }
                catch (system.exception exception)
                {
                    //   capture exceptions, post error, , fail validation.

                    return dtsexecresult.failure;
                }
            }
        #endregion

        #region public methods

            public string validateschema(string tablename)
            {
                gettablelist(tablename);
                return "";
            }

            private list<string> gettablelist(string servername)
            {
                list<string> ltables = new list<string>();
                try
                {

                    sqlconnection dbconn = new sqlconnection("integrated security=sspi;persist security info=false;initial catalog=testingtmp;data source=" + servername);
                    sqlcommand dbcmd = new sqlcommand("select name sysobjects type ='u';", dbconn);
                    dbconn.open();
                    sqldatareader sqldr = dbcmd.executereader();

                    while (sqldr.read())
                    {
                        ltables.add(sqldr.getstring(0));
                    }
                    dbconn.close();

                }
                catch (exception ex) { }
                return ltables;
            }

            private bool validatetableschema(string servername, string table1, string table2)
            {
                sqlconnection dbconn = new sqlconnection("integrated security=sspi;persist security info=false;initial catalog=msdb;data source=" + servername);
                sqlcommand dbcmd = new sqlcommand("select * '" + table1 + "';", dbconn);
                dbconn.open();
                sqldatareader sqldr = dbcmd.executereader();
                datatable schema = sqldr.getschematable();


                dbcmd = new sqlcommand("select * '" + table2+  "';", dbconn);
                dbconn.open();
                sqldr = dbcmd.executereader();
                datatable schema2 = sqldr.getschematable();

                return schema.equals(schema2);

             }

        #endregion

       }

                    

ui class

namespace mckinsey.solutions.ssis.custom.controlflowui
{
    public class copytabletaskui : idtstaskui
    {

        #region // fields
         private taskhost _taskhost;
        #endregion

        #region properties

        #endregion

        #region methods

         public void initialize(taskhost taskhost, iserviceprovider serviceprovider)
         {

             _taskhost = taskhost;
         }

         public containercontrol getview()
        {

            return new copytablefrm(_taskhost);
        }

        #endregion


             #region idtstaskui members

             public void delete(iwin32window parentwindow)
             {
                 throw new notimplementedexception();
             }

             public void new(iwin32window parentwindow)
             {
                 throw new notimplementedexception();
             }

             #endregion
    }

}

}

and issue won't open editor? errors?

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