查询单个值主要用于对成绩最低分,最高分,学生总数,学生性别等信息的统计

在查询单个值的时候用到了ExecuteScalar方法,连接以及语句方面,以及思路和对数据的增删改差不多

下面请看一段代码:

           string s = "server=.;database=SampleDb;Integrated Security=True";
SqlConnection c = new SqlConnection(s);
c.Open(); SqlCommand command = new SqlCommand();
string sql="select count(*) from student"
command.Connection = c;
command.CommandText = sql; int n = command.ExecuteScalar();
c.Close();
Messagebox.show("共有"+n+"个学生");

ps: ExecuteScalar方法返回值为objects,用于在使用的时候应该考虑适当的情况作出合适的强制类型转换

TIPS:此方法可以用于对登陆窗体的设计

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附录:用户登陆窗体设计:

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" 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" alt="" width="485" height="215" />

[小技巧]

 ----->>如何按回车代替“登录”按钮,按Esc代替“关闭”按钮?
             --->>窗体的AcceptButton和CancelButton属性
             -->>AcceptButton表示接受按钮,在窗体上按回车时相当于单击此按钮。
             -->>CancelButton表示取消按钮,在窗体上按Esc键时相当于单击此按钮。
------>>如何把登录窗体放在主窗体前显示?               ------->>>在Main方法中以模式打开登录窗体,但不是作为主窗体打开,根据登录返回的DialogResult判断是否打开Mdi窗体,还是退出程序
                    --------->>>>>>>    aaarticlea/png;base64,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" alt="" />
 

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