安装了ArcEngine，并且用ecp注册过。但当放置toolbarcontrol、TOCControl等控件在窗体上时，提示“this control require an esri designer license.remove this control from your project!”错误
可能大家都遇到过这样的问题.如何解决呢.
一,就是把ARCGIS的LISENCE停掉再添加这些控件.
二,在license.dat中，删除下行
      FEATURE Designer ARCGIS 9.0 1-jan-0000 666 8C20A09147B73F890463 \
      vendor_info=HYL70E85HYZ0KJHBS031 ck=218
   再重新进行配置并启动服务.

有的人试过以上办法后还是不行，曾经我也是这样，可能是授权文件不行。解决方法是将授权文件修改为：

designer,9,ecp123456789,none,A3E10H414MYKXXEND084
standardengine,9,ecp123456789,none,A3F750PNLBADL50JT161
gdbedit,9,ecp123456789,none,A3C9KK988YY0A1GJH117
spatialengine,9,ecp123456789,none,A3F750PNLBADL50JT161
3dengine,9,ecp123456789,none,A3E784S0PFEHPGXX3241
3dserver,9,ecp123456789,none,A3E1RK85802H02ZRH212
spatialserver,9,ecp123456789,none,A3E0HH414MYKXXEND223
arcgisserver,9,ecp123456789,none,A3E650PNLBADL50JT152
trackingserver,9,ecp123456789,none,A3E9KNCCC124F5KHT210
routeserver,9,ecp123456789,none,A3C9NRFGG567J9HSX040
datadelviery,9,ecp123456789,none,A3C7FE21100S2T8AG026
arcimsserver,9,ecp123456789,none,A3EAMNCCC124F5KHT006
arcsdeserver,9,ecp123456789,none,A3C7FE21100S2T8AG026
streetmapserver,9,ecp123456789,none,A3F68AZYXMMHXH46C014
streetmapengine,9,ecp123456789,none,A3C157EPTJJLTK118006