Whenever any request is sent from a DB2 client to the DB2 server, all character data (such as queries or char host variables) is converted from the client code page to the database code page.
每当从DB 2客户机发生任何请求到DB 2服务器，所有字符数据(例如查询或CHAR主机变量)都要从客户机代码页转换为数据库代码页。
This is known as "internal encoding" because there is no "external encoding" on the host variable (meaning that there is no code page associated with the host variable).
这被称作“内部编码”，因为主机变量上没有“外部编码”(即没有与主机变量相关联的代码页)。
The code in the host page that receives an ItemCommand event is passed the instance of the ContextMenu which fired the event and the command name associated with the clicked item.
页面上的代码将获得两部分内容：引发事件的ContextMenu实例;与点击项相关的command name。
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