ASP.NET房产销售网站(网上售房系统)(6)

以下是引用片段：

其主要代码实现过程如下：
protected void Page_Load(object sender, EventArgs e)
    {
        // 在此处放置用户代码以初始化页面
        if (!Page.IsPostBack)
        {
            this.Button3.Visible = false;
            if (Request.QueryString["ID"] != null)
            {
                //显示当前的楼盘信息
                DataTable tmpda = new DataTable();
                tmpda = Database.Get_Table("select * from  楼盘信息 where 楼牌代码=" + Request.QueryString["ID"]);
                if (tmpda.Rows.Count > 0)
                {
                    this.TextBox1.Text = tmpda.Rows[0]["楼盘名称"].ToString();
                    this.TextBox3.Text = tmpda.Rows[0]["所在地址"].ToString();
                    this.TextBox2.Text = tmpda.Rows[0]["楼盘简介"].ToString();
                    Hidden1.Value = tmpda.Rows[0]["楼盘照片"].ToString(),;
                    this.Button3.Visible = true;
                }
            }
        }

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        //将相关的图片上传到@"Pic\"路径下
        string FileName = "";
        string FileName1;
        string DPath;
        if (Server.MapPath("").Substring(Server.MapPath("").Length - 1, 1) == @"\")
        {
            DPath = Server.MapPath("");
        }
        else
        {
            DPath = Server.MapPath("") + @"\";
        }
        DPath = DPath + @"Pic\";
        if (this.File2.PostedFile.FileName != "")
        {
            string[] temp = this.File2.PostedFile.FileName.Split('.');
            string strHzm = "." + temp[temp.Length - 1];

            Guid tmp = Guid.NewGuid();
            FileName = tmp.ToString() + strHzm;
            FileName1 = DPath + tmp.ToString() + strHzm;
            this.File2.PostedFile.SaveAs(FileName1);
            if (File.Exists(DPath + Hidden1.Value))
            {
                File.Delete(DPath + Hidden1.Value);
            }
        }
        //根据标志判断是添加还是修改的操作 保存楼盘信息
        if (Request.QueryString["ID"] != null)
        {
            if (FileName == "")
            {
                Database.ExecSql("update  楼盘信息 set 楼盘名称='" + TextBox1.Text + "', 所在地址='" + this.TextBox3.Text + "',楼盘简介='" + TextBox2.Text + "'   where 楼牌代码=" + Request.QueryString["ID"]);
            }
            else
            {
                Database.ExecSql("update  楼盘信息 set 楼盘照片='" + FileName + "',楼盘名称='" + TextBox1.Text + "', 楼盘简介='" + TextBox2.Text + "'  where 楼牌代码=" + Request.QueryString["ID"]);
            }
        }
        else
        {
            Database.ExecSql("insert into 楼盘信息(楼盘名称,所在地址,楼盘简介,楼盘照片) values('" + TextBox1.Text + "'" +
                " ,'" + TextBox3.Text + "','" + TextBox2.Text + "','" + FileName + "')");

        }