我第一次用PA，在后台添加了文章后，浏览时出现以下信息
Server Error in '/' Application.
至少一个参数没有被指定值。
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.OleDb.OleDbException: 至少一个参数没有被指定值。
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[OleDbException (0x80040e10): 至少一个参数没有被指定值。]
这是由于什么原因导致的？求救了。谢谢
