try to modify your web.config:<configuration>
<system.web>
<globalization requestEncoding="GB2312" responseEncoding="GB2312" culture="zh-CN" fileEncoding="GB2312" />
</system.web>
</configuration>
<system.web>
<globalization requestEncoding="GB2312" responseEncoding="GB2312" culture="zh-CN" fileEncoding="GB2312" />
</system.web>
</configuration>
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