试图将值添加到复选框中

Question

Hi guys i'm trying to get the compiler to get the information the checkbox checked from the database but couldn't do it how can i add value into the checkbox exactly, please check attempt of doing so. i need your help guys thanks..

  string query = "SELECT count (1) FROM Login WHERE Username=@Username AND password=@password AND usertype=@usertype";
            SqlCommand sqlCmd = new SqlCommand(query, sqlCon);
            sqlCmd.CommandType = CommandType.Text;
            sqlCmd.Parameters.AddWithValue("@Username", txtUsername.Text);
            sqlCmd.Parameters.AddWithValue("@password", txtPassword.Text);
            sqlCmd.Parameters.AddWithValue("@usertype",checkbox1);/// how can i add values into checkbox !
            sqlCmd.Parameters.AddWithValue("@usertype", checkbox2);
            int count = Convert.ToInt32(sqlCmd.ExecuteScalar());
            if (count == 1)
            {
                if ((bool)checkbox1.IsChecked == true)
                {

                    MainWindow Dashboard = new MainWindow();
                    Dashboard.Show();
                    MessageBox.Show("You'r logged in as an Admin");
                    this.Close();
                }

                if ((bool)checkbox2.IsChecked == true)
                {
                    ;
                    Student stu = new Student();
                    stu.Show();
                    MessageBox.Show("You'r logged in as a Student");
                    this.Close();
            }

Answer 1

You could check whether a CheckBox is checked and then set the value of the parameter, for example to the Content of the checked CheckBox :

if (checkbox1.IsChecked == true)
    sqlCmd.Parameters.AddWithValue("@usertype", checkbox1.Content.ToString());
else if (checkbox2.IsChecked == true)
    sqlCmd.Parameters.AddWithValue("@usertype", checkbox2.Content.ToString());

But if you require the @usertype parameter to be set, you should use radio buttons rather than check boxes.