XDF/Teacher/CreateCourse.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using BLL;

namespace XDF.Teacher
{
    public partial class CreateCourse : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                if (Session["UserRole"] == null)
                    Response.Redirect("~/Login.aspx");
               

                string teaID = Session["UserID"].ToString();
                LabelTeaID.Text = teaID;
                string grade=getTeachGrade(teaID);
                string subject=getTeachSubject(teaID);
                LabelGrade.Text = grade;
                LabelSubject.Text = subject;
            }
        }

        private string getTeachGrade(string teaID)
        {
            teaID = LabelTeaID.Text;
            string result = "";
            try
            {
                // 1. 创建连接
                SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["XDF"].ConnectionString);

                // 2. 打开连接
                connection.Open();

                // 2.1 创建命令对象
                SqlCommand command = null;

                command = new SqlCommand("select TeachGrade from Teacher where TeaID=@TeaID", connection);
                command.Parameters.AddWithValue("@TeaID", teaID);


                // 2.2 执行命令对象
                result = command.ExecuteScalar().ToString();

                // 3. 关闭连接
                connection.Close();
            }
            catch (Exception e)
            {
                ;
            }