标签：
1.Unknown column ‘Extent1.Discriminator‘ in ‘field list‘
Resole:http://blog.csdn.net/philip502/article/details/16350809
http://blog.csdn.net/gentle_wolf/article/details/14004345
.Net Errors
原文地址：http://www.cnblogs.com/jamkier/p/5466821.html
