admin/AddStudent.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 AddStudent : System.Web.UI.Page
{
    Alert alert = new Alert();
    data data = new data();
    data mydata = new data();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            SqlDataReader dr = data.GetDataReader("select top 1 * from  Student order by id desc ");
            if (dr.Read())
            {

               // txtxuehao.Text = Convert.ToString(int.Parse(dr["xuehao"].ToString()) + 1);
            }
            else
            {
                txtxuehao.Text = "1000000";
            }
            DropDownList2.DataSource = mydata.GetDataReader("select * from  YuanXi");
            DropDownList2.DataTextField = "Name";
            DropDownList2.DataValueField = "id";
            DropDownList2.DataBind();
            DropDownList3.DataSource = mydata.GetDataReader("select * from  banJi where YuanXiid='" + DropDownList2.SelectedValue + "'");
            DropDownList3.DataTextField = "name";
            DropDownList3.DataValueField = "id";
            DropDownList3.DataBind();
        }
    }
  
   
    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        SqlDataReader dr = data.GetDataReader("select * from  Student where xuehao='"+txtxuehao.Text+"' ");
        if (dr.Read())
        {
            Alert.AlertAndRedirect("学号重复！");
            return;
        
        }

        data.RunSql("insert into Student(emal,UserName,Sex,xuehao,chushengriqi,Ds,pwd,YuanXi,YuanXiid,banJi,banJiid)values('" + txtemal.Text + "','" + txtname.Text + "','" + DropDownList1.SelectedItem.Text + "','" + txtxuehao.Text + "','" + txttime1.Value + "','" + txtds.Text + "','" + TextBox1.Text + "','" + DropDownList2.SelectedItem.Text + "','" + DropDownList2.SelectedValue + "','" + DropDownList3.SelectedItem.Text + "','" + DropDownList3.SelectedValue + "')");

        Alert.AlertAndRedirect("添加成功！", "Students.aspx");
    }
    protected void txtds_TextChanged(object sender, EventArgs e)
    {

    }