Call ShowDialog on Form object : Dialog : GUI Windows Forms C# Examples

    
using  System;
using  System.Drawing;
using  System.Windows.Forms;
      
class  SimplerDialog:  Form
{
          public  static  void  Main()
          {
                    Application.Run(new  SimplerDialog());
          }
          public  SimplerDialog()
          {
                    Text  =  "Simpler  Dialog";
      
                    Menu  =  new  MainMenu();
                    Menu.MenuItems.Add("&Dialog!",  new  EventHandler(MenuOnClick));
          }
          void  MenuOnClick(object  obj,  EventArgs  ea)
          {
                    SimplerDialogBox  dlg  =  new  SimplerDialogBox();
                    DialogResult          dr    =  dlg.ShowDialog();
      
                    Console.WriteLine(dr);
          }
}
class  SimplerDialogBox:  Form
{
          public  SimplerDialogBox()
          {
                    Text  =  "Simpler  Dialog  Box";
      
                    FormBorderStyle  =  FormBorderStyle.FixedDialog;
                    ControlBox            =  false;
                    MaximizeBox          =  false;
                    MinimizeBox          =  false;
                    ShowInTaskbar      =  false;
      
                    Button  btn  =  new  Button();
                    btn.Parent      =  this;
                    btn.Text          =  "OK";
                    btn.Location  =  new  Point(50,  50);
                    btn.Size          =  new  Size  (10  *  Font.Height,  2  *  Font.Height);
                    btn.DialogResult  =  DialogResult.OK;
      
                    btn  =  new  Button();
                    btn.Parent      =  this;
                    btn.Text          =  "Cancel";
                    btn.Location  =  new  Point(50,  100);
                    btn.Size          =  new  Size  (10  *  Font.Height,  2  *  Font.Height);
                    btn.DialogResult  =  DialogResult.Cancel;
          }
}