DemoWebUI/admin/teacherAdd.aspx.cs

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using System;
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 admin_teacherAdd : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["admin"] == null)
        {
            Response.Redirect("../default.aspx");
        }
        else if (!IsPostBack)
        {
            SqlConnection conn = baseClass.GetCon();
            conn.Open();
            SqlCommand cmd2 = new SqlCommand("select * from tb_deptcollege order by deptCollegeName", conn);
            SqlDataReader sdr2 = cmd2.ExecuteReader();
            while (sdr2.Read())
            {
                DropDownList1.Items.Add(sdr2["deptCollegeName"].ToString());
            }
            sdr2.Close();
            conn.Close();
        }
    }
    protected void btnchange_Click(object sender, EventArgs e)
    {
        SqlConnection conn = baseClass.GetCon();
        conn.Open();
         SqlCommand cmd = new  SqlCommand("select count(*) from tb_teacher where techID='" + teacherNum.Text.Trim() + "'", conn);
        int i = Convert.ToInt32(cmd.ExecuteScalar());
        if (i > 0)
        {
            MessageBox.Show("该用户已存在");
            conn.Close();
        }
        else if (teacherNum.Text.Trim() == "" || teacherName.Text.Trim() == "")
        {
            MessageBox.Show("信息不完整！");
        }
        else
        {
            Maticsoft.Model.tb_teacher tcMod = new Maticsoft.Model.tb_teacher();
            tcMod.techID = teacherNum.Text.Trim();
            tcMod.techName = teacherName.Text.Trim();
            tcMod.techPwd = teacherPwd.Text.Trim();
            Maticsoft.BLL.tb_teacher tcBll = new Maticsoft.BLL.tb_teacher();
            tcBll.Add(tcMod);
            // 下载于www.51aspx.com
            Maticsoft.Model.tb_teacher_info tciMod = new Maticsoft.Model.tb_teacher_info();
            tciMod.techID = teacherNum.Text.Trim();