Question

{"关键字 'user' 附近有语法错误。"}...求指教错误在什么地方？

string connectionString = @"Data Source=3S6ZWHVOXZHTX9A;Initial Catalog=TOUR_DB;Integrated Security=True";
//建立连接
SqlConnection myCnnection = new SqlConnection(connectionString);
myCnnection.Open();
//读取所输入用户名的密码
SqlCommand myCommand = myCnnection.CreateCommand();
string sql = "SELECT u_name,u_pass,u_realname,u_type From user Where(u_name=N'" + textBox1.Text.Trim() + "')";
SqlCommand tr1 = new SqlCommand(sql, myCnnection);
SqlDataReader myDataReader = tr1.ExecuteReader();

Answer 1

1、where和括号之间加个空格试试
2、where 后面的条件不知道你为什么要一个括号
建议如下：
string sql =
"SELECT [u_name],[u_pass],[u_realname],[u_type] From user Where [u_name]=N'" + textBox1.Text.Trim() + "'";

Answer 2

data