新手提问,望大家解答帮忙看下这个string sqlstr = "select usertype from Users where username='"+ username.Text+"'and mypassword=@password";里面的这个@password@符号是什么意思啊?谢谢~~~~~
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 00:42:36
![新手提问,望大家解答帮忙看下这个string sqlstr =](/uploads/image/z/14491256-32-6.jpg?t=%E6%96%B0%E6%89%8B%E6%8F%90%E9%97%AE%2C%E6%9C%9B%E5%A4%A7%E5%AE%B6%E8%A7%A3%E7%AD%94%E5%B8%AE%E5%BF%99%E7%9C%8B%E4%B8%8B%E8%BF%99%E4%B8%AAstring+sqlstr+%3D+%22select+usertype+from+Users+where+username%3D%27%22%2B+username.Text%2B%22%27and+mypassword%3D%40password%22%3B%E9%87%8C%E9%9D%A2%E7%9A%84%E8%BF%99%E4%B8%AA%40password%40%E7%AC%A6%E5%8F%B7%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D%E5%95%8A%3F%E8%B0%A2%E8%B0%A2%EF%BD%9E%EF%BD%9E%EF%BD%9E%EF%BD%9E%EF%BD%9E)
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