C#.一直报错 select ID from Users where [email protected] 中@user未定义
我是用WPF三层架构实现一个权限分配的界面制作。 这错误尴尬了我一周多时间。 开始一直以为是C#语言特性决定的。明明我的SQL 语句给user赋值过了。它就是检测不到。 附上部分代码如下： 三层中的获取id和删除类的数据访问层： public int showid(string user) { string sql = "select ID from Us
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相关文章
- 1. Too many parameters: expected 1, was given 2 Query: SELECT count(id) FROM `user` WHERE username = ?;
- 2. mysql Access denied for user [email protected]
- 3. select * from pet where species regexp '^c';
- 4. undefined reference to `[email protected]'报错
- 5. [email protected]报错解决
- 6. push代码，[email protected]: Permission denied (publickey).报错
- 7. [email protected]注解详解
- 8. [email protected] 含义：
- 9. 解决Django Mail from must equal authorized user', '[email protected]
- 10. Mysql错误（一）:Access denied for user ''[email protected]'localhost' (using password: YES)错误解决方法