sources of topics and their own ideas

related codes

/ / Please paste the code text below (do not replace the code with pictures)

        string cString = "data source=.;initial catalog=project;integrated security=true;";
        SqlConnection sConnection = new SqlConnection(cString);
        sConnection.Open();
        SqlCommand sCommand = new SqlCommand("select * from login where Uname=@Uname", sConnection);
        SqlParameter sqUname = new SqlParameter("@Uname", textBox1.Text);
        sCommand.Parameters.Add(sqUname);
        SqlDataReader sReader = sCommand.ExecuteReader(CommandBehavior.CloseConnection);
        if (sReader.HasRows)
        {
            sReader.Read();
            string uPwd = sReader["Upwd"].ToString();
            if (uPwd == textBox2.Text.Trim())
            {
                string uID = sReader["UID"].ToString();
                string uName = sReader["Uname"].ToString();
                User user = new User(uID, uName, uPwd);
                Form2 f2 = new Form2();
                f2.Show();
                Hide();
            }

what result do you expect? What is the error message actually seen?

problem description

UPwd value is empty after breakpoint debugging
there are UID 001 / username ss;Upwd 111 in the database

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?