studHomefind.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 homeFind : System.Web.UI.Page
{
    SqlConnection conn;
    SqlCommand cmd1,cmd2,cmd3;
    SqlDataAdapter sda;
    DataSet ds;
    SqlDataReader dr;

    protected void Page_Load(object sender, EventArgs e)
    {
        this.Panel1.Visible = false;
        this.Panel2.Visible = false;
        this.Panel3.Visible = false;
    }

    protected void btn_OK_Click(object sender, EventArgs e)
    {
        conn = sqldata.createCon();
        conn.Open();
        int eareID = Convert.ToInt32(this.ddlEare.SelectedValue);
        int floodID = Convert.ToInt32(this.ddlFlood.SelectedValue);
        string homeNo = Convert.ToString(this.homeHao.Text);
        string sql1 = "select homeID from (eare inner join flood on eare.eareID=flood.eareID)inner join home on flood.floodID=home.floodID and eare.eareID=@eareID and flood.floodID=@floodID and homeNo=@homeNo";
        cmd1 = new SqlCommand(sql1, conn);
        SqlParameter id1 = new SqlParameter("@eareID", SqlDbType.Int, 4);
        SqlParameter id2 = new SqlParameter("@floodID", SqlDbType.Int, 4);
        SqlParameter id3 = new SqlParameter("@homeNo", SqlDbType.VarChar, 4);
        id1.Value = eareID;
        id2.Value = floodID;
        id3.Value = homeNo;
        cmd1.Parameters.Add(id1);
        cmd1.Parameters.Add(id2);
        cmd1.Parameters.Add(id3);
        dr = cmd1.ExecuteReader();
        int homeID = 0;
        if (dr.Read())
        {
            homeID = Convert.ToInt32(dr["homeID"].ToString());
        }
        else
        {
            this.Panel1.Visible = true;
        }
        conn.Close();

        string sql2 = "select studName as 姓名,studNo as 学号,birthday as 出生年月,enterDate as 入学时间,shenfen as 身份 from student where homeID='" + homeID + "'";
        conn.Open();
        cmd2 = new SqlCommand(sql2, conn);