C#判断数据库中取出的字段值是否为空(NULL) .
posted @ 2013-04-02 11:10 gisai 阅读(3228) 评论(0) 推荐(0)
posted @ 2013-04-02 11:10 gisai 阅读(3228) 评论(0) 推荐(0)
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