！！！！怪怪怪！！！点了查询按钮，第一次正常检索，再点一次提示指定的转换无效？

Question

以textbox中的值作为检索值，点按钮查询正常，什么都不变再点一次就点什么按钮都报错，这是为什么？

Answer 1

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Answer 2

由上面的堆栈跟踪信息我可以判断你
的ViewState没有清空
你试试在你的button_click事件里写
ViewState.Clear();
这样可以保证每次清空!

Answer 3

建议你所有的代码都加上try catch 然后在所有的catch设置断点,一点点的跟踪看看那里错了

Answer 4

捕捉不到，似乎load 和　init后就出错了，步进也没用

Answer 5

textbox.text如果等于空肯定不出错，因为出错的前提是，第一次查询成功，第二次再点才错，第一次没有结果，是不会错了

Answer 6

建议你 重新启动一下，在调试看看，不行的话，将所有的函数 加上try catch ，看看

Answer 7

baitianhai(hong)老兄，你可别误会，问题并没解决，到现在我还没捕捉到是什么错误，不过，还是谢谢你，散分了，你去asp.net版拿吧！
yarshray(saga jion) 的见解虽然很有见地，还是没法解决我的问题，但也谢谢你，你就在本版拿分吧！
两位要是有什么办法，可以和我联系，[email protected]