求助大家帮我解释下以下代码!!!具体意思,功能,万分感谢

[mingguo617]

protected internal void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (!this.Page.ClientScript.IsClientScriptIncludeRegistered(this.Page.GetType(), "js_DeleteConfirm"))
this.Page.ClientScript.RegisterClientScriptInclude(this.Page.GetType(), "js_DeleteConfirm", "../js/Confirm.js");
this.btnDel.Attributes["OnClick"] = "return DeleteConfirm();";
if (Request.UrlReferrer != null)
ViewState["UrlReferrer"] = Request.UrlReferrer.ToString();

OraDao ora = new OraDao(System.Configuration.ConfigurationManager.AppSettings["dycost"]);
string sql = " select * from vw_code_anslysedata t where code_anslysedata='" + Request.QueryString["dpt"] + "'";
DataView dv = ora.Query(sql);
this.txtAnslyseData.Value = dv.Table.Rows[0]["ANSLYSEDATA"];
this.txtDepartment.Value = dv.Table.Rows[0]["DEPARTMENT"];
this.txtQuarter.Value = Request.QueryString["year"] + "-" + Request.QueryString["quarter"];
string strContents = ora.ReadLob("select CONTENTS from VW_PRO_ANSLYSE where code_anslysedata='" + Request.QueryString["dpt"] + "' and nyear='" + Request.QueryString["year"] + "' and nquarter='" + Request.QueryString["quarter"] + "' ");
if (strContents != null && strContents.Length > 2)
{
this.btn_Save.Text = "修改";
this.FCKeditor3.Value = strContents.Replace("''", "'");
}
}

}

[bdmh]

有什么好解释的，页面加载时，读数据库，你要不懂就去看msdn