contracts/Modify.aspx.cs

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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Text;
using System.Data.SqlClient;

public partial class contracts_Modify : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            chushi();
        }
    }

   /// <summary>
    /// 初始化
    /// </summary>
    protected void chushi()
    {
        DataSet dstno = SqlHelper.ExecuteforDataSet("select tno,tname from teachers");
            ddltno.DataSource = dstno;
            ddltno.DataTextField = "tname";
            ddltno.DataValueField = "tno";
            ddltno.DataBind();

        DataSet dstid = SqlHelper.ExecuteforDataSet("select tid,title from contractType");
            ddltid.DataSource = dstid;
            ddltid.DataTextField = "title";
            ddltid.DataValueField = "tid";
            ddltid.DataBind();


        StringBuilder strSql = new StringBuilder();
        strSql.Append(@"select * from contracts where id=" + Request.QueryString["id"] );

        //根据编号得到相应的记录
        DataSet ds = SqlHelper.ExecuteforDataSet(strSql.ToString());
        if (ds.Tables[0].Rows.Count > 0)
        {
            ddltno.SelectedValue=ds.Tables[0].Rows[0]["tno"].ToString();
            txt_tname.Text = ds.Tables[0].Rows[0]["tname"].ToString();
            ddltid.SelectedValue=ds.Tables[0].Rows[0]["tid"].ToString();
            txt_sdate.Text = ds.Tables[0].Rows[0]["sdate"].ToString();
            txt_edate.Text = ds.Tables[0].Rows[0]["edate"].ToString();
            Textarea1.Value = ds.Tables[0].Rows[0]["memo"].ToString();
            txt_indate.Text = ds.Tables[0].Rows[0]["indate"].ToString();
        }
    }

    /// <summary>
    /// 编辑