要选择什么条件?
如果只是确认的话,这样就可以了:
Button1.Attributes["onClick"]="javascript:return confirm('Your Message');";

解决方案 »

  1.   

    在后台按纽事件中写下Response.Write("<script language=javascript> window.showmodaldialog(url,""); </script"|>");
      

  2.   

    上面有点错
    Response.Write("<script language=javascript> window.showmodaldialog(url,""); </script>");
      

  3.   

    showmodaldialog能在web里面用吗?
      

  4.   

    window.showModalDialog("SMD_target.htm","Dialog Arguments Value","dialogHeight: 250px; dialogWidth: 250px; dialogTop: 200px; dialogLeft: 455px; edge: Sunken; center: Yes; help: Yes; resizable: No; status: No;");