C#通过反射获取当前工程中所有窗体并打开的方法

本文实例讲述了c#通过反射获取当前工程中所有窗体并打开的方法。分享给大家供大家参考。具体实现方法如下：

using system;
using system.collections.generic;
using system.linq;
using system.windows.forms;
namespace testapphelpermsdnsample
{
 static class program
 {
  /// <summary>
  /// the main entry point for the application.
  /// </summary>
  [stathread]
  static void main()
  {
   application.enablevisualstyles();
   application.setcompatibletextrenderingdefault(false);
   form startup = new form();
   startup.text = "choose a form to run";
   startup.size = new system.drawing.size(300, 300);
   startup.startposition = formstartposition.centerscreen;
   startup.load += new eventhandler(startup_load);
   combobox cboforms = new combobox();
   cboforms.name = "cboforms";
   cboforms.dropdownstyle = comboboxstyle.dropdownlist;
   cboforms.size = new system.drawing.size(250, 20);
   cboforms.location = new system.drawing.point(25, 75);
   startup.controls.add(cboforms);
   button btnopenform = new button();
   btnopenform.text = "open form";
   btnopenform.size = new system.drawing.size(100, 30);
   btnopenform.location = new system.drawing.point(100, 150);
   btnopenform.click += new eventhandler(btnopenform_click);
   startup.controls.add(btnopenform);
   application.run(startup);
  }
  static void btnopenform_click(object sender, eventargs e)
  {
   combobox cbo = ((sender as button).parent as form).controls["cboforms"] as combobox;
   properties.settings.default.lastformfullname = cbo.selecteditem.tostring();
   properties.settings.default.save();
   form f = activator.createinstance(type.gettype(cbo.selecteditem.tostring())) as form;
   f.showdialog();
  }
  static void startup_load(object sender, eventargs e)
  {
   combobox cbo = ((sender as form).controls["cboforms"] as combobox);
   // load all the forms in executing assembly
   type[] types = system.reflection.assembly.getexecutingassembly().getexportedtypes();
   foreach (type t in types)
   {
    if (t.basetype == typeof(form))
    {
     cbo.items.add(t.fullname);
    }
   }
   // select the last used
   if (!string.isnullorempty(properties.settings.default.lastformfullname))
   {
    if(cbo.items.contains(properties.settings.default.lastformfullname))
    {
     int index = cbo.findstring(properties.settings.default.lastformfullname);
     if (index >= 0)
      cbo.selectedindex = index;
    }
   }
  }
 }
}

希望本文所述对大家的c#程序设计有所帮助。