Getting error Incorrect syntax near '='

I receive this error after the

 SQLDataReader reader  = command.ExecuteReader();

line during debugging. I have tried to figure out where this is at but have been unable to locate it. Can someone look at the end and determine where the error is. Here is my code:

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class login : System.Web.UI.Page

string queryString = "Server=hsisql;Database=hsi;Integrated Security=True";

// Call Read before accessing data.

// Call Close when done reading.

try

string uname = Login1.UserName.Trim(); //Get the username from the control

string password = Login1.Password.Trim(); //get the Password from the control

//changed

bool flag = AuthenticateUser(uname, password, out userID);

//Changed

else