chengjiUpdate.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;

public partial class chengjiUpdate : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            banjiInfo();
            kemuInfo();
            string sql;
            sql = "select * from xueji where xuehao =(select xuehao from chengji where ID=" + Request.QueryString["id"].ToString().Trim()+")";
            DataSet result = new DataSet();
            result = new Class1().hsggetdata(sql);
            if (result.Tables[0].Rows.Count > 0)
            {
                this.xuehao.Text = result.Tables[0].Rows[0]["xuehao"].ToString().Trim();
                this.xingming.Text = result.Tables[0].Rows[0]["xingming"].ToString().Trim();
                this.xingbie.Text = result.Tables[0].Rows[0]["xingbie"].ToString().Trim();   
                this.shenfenzheng.Text = result.Tables[0].Rows[0]["shenfenzheng"].ToString().Trim();
    
            }
            result = new Class1().hsggetdata("SELECT * from chengji where ID=" + Request.QueryString["id"].ToString().Trim() + "");
            if (result.Tables[0].Rows.Count > 0)
            {
                this.xueqi.Text = result.Tables[0].Rows[0]["xueqi"].ToString().Trim();
                this.xuenian.Text = result.Tables[0].Rows[0]["xuenian"].ToString().Trim();
                this.chengji.Text = result.Tables[0].Rows[0]["chengji"].ToString().Trim();
                DropDownList2.Items.FindByValue(result.Tables[0].Rows[0]["banjiID"].ToString()).Selected = true;
                DropDownList3.Items.FindByValue(result.Tables[0].Rows[0]["kemuID"].ToString()).Selected = true;
            }
        }
    }
    protected void xuehao_TextChanged(object sender, EventArgs e)
    {
        string sql;
        sql = "select * from xueji where xuehao='" + this.xuehao.Text + "'";
        DataSet result = new DataSet();
        result = new Class1().hsggetdata(sql);
        if (result.Tables[0].Rows.Count > 0)
        {
            this.xuehao.Text = result.Tables[0].Rows[0]["xuehao"].ToString().Trim();
            this.xingming.Text = result.Tables[0].Rows[0]["xingming"].ToString().Trim();
            this.xingbie.Text = result.Tables[0].Rows[0]["xingbie"].ToString().Trim();
            this.shenfenzheng.Text = result.Tables[0].Rows[0]["shenfenzheng"].ToString().Trim();

        }
    }
    private void banjiInfo()
    {
        string sql;
        sql = "select * from banji order by id desc";
        DataSet result = new DataSet();
        result = new Class1().hsggetdata(sql);