谁能建议我如何使用sql阅读器设置条件

Question

                var a = "1";

                var b = "2";
                var c = "3";
                var name = authResult.ExtraData["email"];
                string

 connetionString = null;
                    SqlConnection cnn;
                    SqlCommand cmd;
                    string sql = null;
                    SqlDataReader reader;

                    connetionString = "Data Source = dj0043\\sqlexpress; Initial Catalog = XXXX; Integrated Security = True";
                    sql = "Select    EmployeeRoles.RoleId From EmployeeList Inner Join EmployeeRoles on EmployeeList.EmployeeId =EmployeeRoles.EmployeeId Where EmailId = name";

                    cnn = new SqlConnection(connetionString);
                    try
                    {
                        cnn.Open();
                        cmd = new SqlCommand(sql, cnn);
                        reader = cmd.ExecuteReader();
                        while (reader.Read())
                        {
                            if (reader == a)
                            {
                                return Redirect(Url.Action("Employee", "Home"));
                            }
                            else if (sql == b)
                            {
                                return Redirect(Url.Action("Index", "Home"));
                            }
                            else if (sql == c)
                            {
                                return Redirect(Url.Action("Index", "Home"));
                            }

                        }
                        reader.Close();
                        cmd.Dispose();
                        cnn.Close();

在这种情况下，如果任何用户的ID为1，该用户名将被重定向到该页面，反之亦然尽管任何人都可以告诉我如何使sql reader在这种情况下工作

谢谢

Answer 1

这是您应该采取的方式

if ((int)reader["RoleId"] == 1)
{
     return Redirect(Url.Action("Employee", "Home"));
}
else if ((int)reader["RoleId"] == 2)
{
     return Redirect(Url.Action("Index", "Home"));
}
else if ((int)reader["RoleId"] == 3)
{
     return Redirect(Url.Action("Index", "Home"));
}