Admin/ModifyCar.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.IO;
using System.Data.SqlClient;
public partial class AdminManger_ModifyCar : System.Web.UI.Page
{
    SqlHelper data = new SqlHelper();

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DropDownList1.DataSource = data.GetDataReader("select * from CarType");
            DropDownList1.DataValueField = "id";
            DropDownList1.DataTextField = "name";
            DropDownList1.DataBind();
         string   sql = "select * from CarInfo where CarID=" + Request.QueryString["id"].ToString();
            getdata(sql);
        }
    }
    private void getdata(string sql)
    {
        SqlDataReader dr = data.GetDataReader(sql);
        if (dr.Read())
        {
            title.Text = dr["CarName"].ToString();
            TextBox2.Text = dr["CarPrice"].ToString();
            TextBox1.Text = dr["CarDanWei"].ToString();
            TextBox3.Text = dr["CarNum"].ToString();
            FCKeditor1.Value = dr["CarIntroduce"].ToString();
            pic.Text = dr["CarPhoto"].ToString();
            Image1.ImageUrl = "../files/" + dr["CarPhoto"].ToString();
            //DropDownList1.Items.FindByValue(dr["CarTypeID"].ToString()).Selected = true;
            //DropDownList1.Items.FindByText(dr["CarTypeName"].ToString()).Selected = true;
            TextBox4.Text = dr["CarVIPPrice"].ToString();
            DropDownList2.Items.FindByValue(dr["CarTeJia"].ToString()).Selected = true;
        }

    }
    protected void Button3_Click(object sender, EventArgs e)
    {
        string res;
        upload up = new upload();
        res = up.Up(file1, "../files/");
        this.Label1.Visible = true;
        this.Label1.Text = up.Resup[Convert.ToInt32(res)];
        this.pic.Text = up.s;
        Image1.ImageUrl = "../files/" + pic.Text;
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string sql = "update CarInfo set CarName='" + title.Text.ToString().Trim() + "',CarPrice='" + TextBox2.Text + "',CarNum='" + TextBox3.Text + "',CarIntroduce='" + FCKeditor1.Value + "' ,CarPhoto='" + pic.Text + "',CarTypeID='" + DropDownList1.SelectedValue + "',CarTypeName='" + DropDownList1.SelectedItem.Text + "' ,CarDanWei='" + TextBox1.Text + "',CarVIPPrice='" + TextBox4.Text + "',CarTeJia='"+DropDownList2.SelectedValue+"'  where CarID=" + Request.QueryString["id"].ToString();