Manger/Moddfystudent.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 Manger_Moddfystudent : System.Web.UI.Page
{
    SqlHelper data = new SqlHelper();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            GetContent();
            Getxueyuan();
            GetClass();
        }

    }
    private void GetContent()
    {
        int id = int.Parse(Request.QueryString["id"].ToString());
        SqlDataReader dr = data.GetDataReader("select * from Student where id=" + id);
        dr.Read();
        Name.Text = dr["Name"].ToString();
        zhuanye.Text = dr["zhuanye"].ToString();
        this.xueyuanName.Items.Add(dr["xueyuanName"].ToString());
        this.banjieName.Items.Add(dr["banjieName"].ToString());
      
        tizhong.Text = dr["tizhong"].ToString();
        dianhua.Text = dr["dianhua"].ToString();
        nianling.Text = dr["nianling"].ToString();
        qq.Text = dr["qq"].ToString();
        youjian.Text = dr["youjian"].ToString();
        shengao.Text = dr["shengao"].ToString();
        xuehao.Text = dr["xuehao"].ToString();
        xingbie.Items[0].Text = dr["xingbie"].ToString();

    }
    protected void Button1_Click(object sender, EventArgs e)
    {  string sql="";
         int id = int.Parse(Request.QueryString["id"].ToString());
        if (pwd.Text == "")
        {
           sql="update   Student set  Name='"+Name.Text+"',zhuanye='"+zhuanye.Text+"',xueyuanId="+xueyuanName.SelectedValue+",xueyuanName='"+xueyuanName.SelectedItem.Text+"',banjiId="+banjieName.SelectedValue+",banjieName='"+banjieName.SelectedItem.Text+"',tizhong='"+tizhong.Text+"',dianhua='"+dianhua.Text+"',nianling='"+nianling.Text+"',qq='"+qq.Text+"',xingbie='"+xingbie.SelectedItem.Text+"',youjian='"+youjian.Text+"',shengao='"+shengao.Text+"',xuehao='"+xuehao.Text+"' where id="+id;
        }
        else
        {
            sql="update   Student set  Name='"+Name.Text+"',pwd='"+pwd.Text+"',zhuanye='"+zhuanye.Text+"',xueyuanId="+xueyuanName.SelectedValue+",xueyuanName='"+xueyuanName.SelectedItem.Text+"',banjiId="+banjieName.SelectedValue+",banjieName='"+banjieName.SelectedItem.Text+"',tizhong='"+tizhong.Text+"',dianhua='"+dianhua.Text+"',nianling='"+nianling.Text+"',qq='"+qq.Text+"',xingbie='"+xingbie.SelectedItem.Text+"',youjian='"+youjian.Text+"',shengao='"+shengao.Text+"',xuehao='"+xuehao.Text+"' where id="+id;
        }
        data.RunSql(sql);
        Alert.AlertAndRedirect("修改成功!", "Student.aspx");
    }
    private void GetClass()
    {
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