Nhibernate 困扰我一个星期的问题 终于解决了

在CSDN上发了帖了，向飞鹰 、张老三等发了EMail，都没有回映，抱着试试看的态度在 SF上的EMAIL LIST上发了个帖子，没有想到10分钟不到 就有一位朋友给我解决了问题，还亲自在我的blog上回附了，真是感动啊，不过说起这个捆挠我一个星期的问题  所犯的错误 还真是低级
原来 我把字段的长度 写在 字段名的，后面了
我的错误的文件：
 

<? xml version="1.0" encoding="utf-8"  ?>
< hibernate-mapping  xmlns ="urn:nhibernate-mapping-2.0" >
         < class  name ="pb.testdal.Db.users, testdal1"  table ="users" >
             < LogonID  name ="LogonID"  column ="LogonID"  type ="String(20)" >
                 < generator  class ="assigned"   />
             </ LogonID >
            
             < property  name ="Name"  type ="String"  column ="Name(40)" />
             < property  name ="Password"  type ="String"  column ="Password(20)" />
             < property  name ="EmailAddress"  type ="String"  column ="EmailAddress(20)" />
             < property  name ="LastLogon"  type ="DateTime"  column ="LastLogon"   />
         </ class >
</ hibernate-mapping >

正确的应为：

<? xml version="1.0" encoding="utf-8"  ?>
< hibernate-mapping  xmlns ="urn:nhibernate-mapping-2.0" >
         < class  name ="pb.testdal.Db.users, testdal1"  table ="users" >
             < id  name ="ID"  column ="LogonID"  type ="String(20)" >
                 < generator  class ="assigned"   />
             </ id >
            
             < property  name ="Name"  type ="String(40)"  column ="Name" />
             < property  name ="Password"  type ="String(20)"  column ="Password" />
             < property  name ="EmailAddress"  type ="String(20)"  column ="EmailAddress" />
             < property  name ="LastLogon"  type ="DateTime"  column ="LastLogon"   />
         </ class >
</ hibernate-mapping >

不仔细看 还真看不出来