try to modify your web.config:<configuration>
<system.web>
<globalization requestEncoding="GB2312" responseEncoding="GB2312" culture="zh-CN" fileEncoding="GB2312" />
</system.web>
</configuration>
or something similar if you are using BIG5
<system.web>
<globalization requestEncoding="GB2312" responseEncoding="GB2312" culture="zh-CN" fileEncoding="GB2312" />
</system.web>
</configuration>
or something similar if you are using BIG5
<globalization
requestEncoding="utf-8"
responseEncoding="utf-8"
/>
改为
<globalization
requestEncoding="big5"
responseEncoding="big5"
/>
试试