using system;
using system.windows.forms;
using devexpress.xtraprinting;
using system.xml.serialization;
namespace mydevexpressdemo
{
 /// <summary>
 /// printsettingcontroller 的摘要说明。
 /// </summary>
 public class printsettingcontroller
 {
   printingsystem ps = null;
  string formname=null;

  devexpress.xtraprinting.printablecomponentlink link=null;
  /// <summary>
  ///
  /// </summary>
  /// <param name="control">要打印的部件</param>
  /// <param name="formname">此部件对应的布局信息</param>
  public printsettingcontroller(iprintable control,string formname)
  {
   formname=formname;
   ps=new devexpress.xtraprinting.printingsystem();
   link=new devexpress.xtraprinting.printablecomponentlink(ps);
   ps.links.add(link);
   link.component=control; 
   ps.pagesettingschanged-=new eventhandler(ps_pagesettingschanged);
   loadpagesetting();
   ps.pagesettingschanged+=new eventhandler(ps_pagesettingschanged);
   ps.aftermarginschange+=new marginschangeeventhandler(ps_aftermarginschange);
  
  }
  public void preview()
  {
   try
   {
    if(devexpress.xtraprinting.printhelper.isprintingavailable)
    {
     cursor.current=cursors.appstarting;
     if(_printheader!=null)
     {
      pageheaderfooter phf = link.pageheaderfooter as pageheaderfooter;
      phf.header.content.clear();
      phf.header.content.addrange(new string[] {"",_printheader,""});
      phf.header.font=new system.drawing.font("宋体",14,system.drawing.fontstyle.bold);
      phf.header.linealignment=brickalignment.center;
     }
     link.paperkind=ps.pagesettings.paperkind;
     link.margins=ps.pagesettings.margins;
     link.landscape=ps.pagesettings.landscape;
     link.createdocument();
     ps.previewform.show();
     
    }
    else
    {
     cursor.current=cursors.default;
     messagebox.show("打印机不可用...", "提示", messageboxbuttons.ok, messageboxicon.information);
    }
   }
   finally
   {
    cursor.current=cursors.default;
   }
  }
  /// <summary>
  /// 打印控制器
  /// </summary>
  /// <param name="control">要打印的部件</param>
  public printsettingcontroller(iprintable control)
  {
   if(control==null)return;
   control c=(control)control;
   formname=c.findform().gettype().fullname+"."+c.name;
   ps=new devexpress.xtraprinting.printingsystem();
   link=new devexpress.xtraprinting.printablecomponentlink(ps);
   ps.links.add(link);
   link.component=control;
   ps.pagesettingschanged-=new eventhandler(ps_pagesettingschanged);
   loadpagesetting();
   ps.pagesettingschanged+=new eventhandler(ps_pagesettingschanged);
   ps.aftermarginschange+=new marginschangeeventhandler(ps_aftermarginschange);
  
  }
  public void exporttohtml()
  {
   try
   {
    using(savefiledialog fd=new savefiledialog())
    {
     fd.title="导出html文件";
     fd.restoredirectory=true;
     fd.filter="html文件|*.htm";
     fd.filterindex=1;
     if(fd.showdialog()==dialogresult.ok)
     {
//      if(obj is devexpress.xtragrid.gridcontrol)
//      {
//       ((devexpress.xtragrid.gridcontrol)obj).exporttohtml(fd.filename);
//       messagebox.show("文件导出成功","导出",messageboxbuttons.ok,messageboxicon.information);
//      }
//      else if(obj is devexpress.xtratreelist.treelist)
//      {
       link.createdocument();
       ps.exporttohtml(fd.filename);
       messagebox.show("文件导出成功","导出",messageboxbuttons.ok,messageboxicon.information);
//      }
      
     }
    }
   }
   finally
   {
   }
  }
  /// <summary>
  /// 网格分组时要导出，请使用这个，
  /// </summary>
  public void gridgrouptoexcel()
  {
   devexpress.xtragrid.gridcontrol grid=this.link.component as devexpress.xtragrid.gridcontrol;
   if(grid!=null)
   {
    using(savefiledialog fd=new savefiledialog())
    {
     fd.title="导出excel文件";
     fd.restoredirectory=true;
     fd.filter="excel文件|*.xls";
     fd.filterindex=1;
     if(fd.showdialog()==dialogresult.ok)
     {
     
      grid.exporttoexcel(fd.filename);
      messagebox.show("文件导出成功","导出",messageboxbuttons.ok,messageboxicon.information);
     
      
     }
    }
   }
  }
  public void exporttoexcel()
  {
   try
   {
    using(savefiledialog fd=new savefiledialog())
    {
     fd.title="导出excel文件";
     fd.restoredirectory=true;
     fd.filter="excel文件|*.xls";
     fd.filterindex=1;
     if(fd.showdialog()==dialogresult.ok)
     {
//      if(obj is devexpress.xtragrid.gridcontrol)
//      {
//       ((devexpress.xtragrid.gridcontrol)obj).exporttoexcel(fd.filename);
//       messagebox.show("文件导出成功","导出",messageboxbuttons.ok,messageboxicon.information);
//      }
//      else if(obj is devexpress.xtratreelist.treelist)
//      {
       link.createdocument();
       ps.exporttoxls(fd.filename);
       messagebox.show("文件导出成功","导出",messageboxbuttons.ok,messageboxicon.information);
//      }
      
      
     }
    }
   }
   finally
   {
   }
  }
  string _printheader=null;
  /// <summary>
  /// 打印时的标题
  /// </summary>
  public string printheader
  {
   set
   {
    _printheader=value;
   }
  }
  /// <summary>
  /// 进行打印
  /// </summary>
  public void print()
  {
   try
   {
    if(devexpress.xtraprinting.printhelper.isprintingavailable)
    {
     if(_printheader!=null)
     {
      pageheaderfooter phf = link.pageheaderfooter as pageheaderfooter;
      phf.header.content.clear();
      phf.header.content.addrange(new string[] {"",_printheader,""});
      phf.header.font=new system.drawing.font("宋体",14,system.drawing.fontstyle.bold);
      phf.header.linealignment=brickalignment.center;
     }
     link.paperkind=ps.pagesettings.paperkind;
     link.margins=ps.pagesettings.margins;
     link.landscape=ps.pagesettings.landscape;
     link.createdocument();
     link.createdocument();
     ps.print();
    }
    else
    {
     cursor.current=cursors.default;
     messagebox.show("打印机不可用...", "提示", messageboxbuttons.ok, messageboxicon.information);
    }
   }
   finally
   {
   }
  }

  
  private void ps_aftermarginschange(object sender, marginschangeeventargs e)
  {
   savepagesetting();
  }

  private void ps_pagesettingschanged(object sender, eventargs e)
  {
   savepagesetting();
  }

  //获取页面设置信息
  void loadpagesetting()
  {
   try
   {
    string path=system.windows.forms.application.startuppath+"\\printlayout";
    if(!system.io.directory.exists(path))
    {
     return;
    }
    path+="\\"+formname+".xml";
    if(!system.io.file.exists(path))
    {
     return;
    }
    xmlserializer ser=new xmlserializer(typeof(userpagesetting));
    userpagesetting setting=(userpagesetting)ser.deserialize(new system.io.filestream(path,system.io.filemode.open,system.io.fileaccess.read,system.io.fileshare.readwrite));
    
    system.drawing.printing.margins m=new system.drawing.printing.margins(setting.left,setting.right,setting.top,setting.bottom);
    ps.pagesettings.assign(m,(system.drawing.printing.paperkind)setting.paperkind,setting.landscape);
   }
   catch{}
  }
  /// <summary>
  /// 保存当前网格的布局
  /// </summary>
  void savepagesetting()
  {
   try
   {
    string path=system.windows.forms.application.startuppath+"\\printlayout";
    if(!system.io.directory.exists(path))
    {
     system.io.directory.createdirectory(path);
    }
    path+="\\"+formname+".xml";
    devexpress.xtraprinting.xtrapagesettings setting=   ps.pagesettings;
    userpagesetting s=new userpagesetting();
    s.landscape=setting.landscape;
    s.left=setting.margins.left;
    s.right=setting.margins.right;
    s.top=setting.margins.top;
    s.bottom=setting.margins.bottom;
    s.paperkind=(int)setting.paperkind;
    xmlserializer ser=new xmlserializer(s.gettype());
    ser.serialize(new system.io.filestream(path,system.io.filemode.create,system.io.fileaccess.write,system.io.fileshare.readwrite),s);
   }
   catch{}
  }

  
 }
 /// <summary>
 /// 最终用户对某个打印页的设置
 /// </summary>
 [serializable()]
 public class userpagesetting
 {
  public userpagesetting()
  {
  }
  public bool landscape;
  public int paperkind;
  public int top;
  public int bottom;
  public int left;
  public int right;
 }
}

如何使用:

printsettingcontroller pc=new printsettingcontroller(this.treelist1); //这里可以是任何实现iprintable 的控件
   pc.printheader="我的报表";
   pc.preview();