problem in call a method from class

Question

hi

i have a class and a method that fill a listview with database records.when i call the method in form load it not works without any error.

but when i write method body in form load it works.i need to write this method and use it from another class.what should i do?

it's class and method code:

 

class accountinfo_show

{

     public void main_list()

    {

          frm_main frm1 = new frm_main();                    //object of main form

          databaseDataContext db = new databaseDataContext();

          var query = db.accountinfos;

          for (int i = 0; i < query.Count(); i++)

         {

                  var field = db.accountinfos.Where(c => c.id == i + 1).Single();

                  ListViewItem item = new ListViewItem(field.bankname.ToString());

                  item.SubItems.Add(field.banklocation.ToString());

                  item.SubItems.Add(field.accountnumber.ToString());

                  item.SubItems.Add(field.mojoodi.ToString());

                  frm1.lstv_main.Items.Add(item);              //lstv=listview

         }

    }

}

 

 in form load of frm_main i call main_list.

 

thanks