jobs/Manage.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;

public partial class jobs_Manage : System.Web.UI.Page
{
       protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            btnDelete.Attributes.Add("onclick", "return confirm(\"你确认要删除吗？\")");
        DataSet dstno = SqlHelper.ExecuteforDataSet("select tno,tname from teachers");
        ddltno.DataSource = dstno;
        ddltno.DataTextField = "tname";
        ddltno.DataValueField = "tno";
        ddltno.DataBind();
        ddltno.Items.Insert(0, new ListItem("---全部---", ""));

        DataSet dstid = SqlHelper.ExecuteforDataSet("select tid,title from jobtype");
        ddltid.DataSource = dstid;
        ddltid.DataTextField = "title";
        ddltid.DataValueField = "tid";
        ddltid.DataBind();
        ddltid.Items.Insert(0, new ListItem("---全部---", ""));


            bind();
        }
    }

    // 绑定
    private void bind()
    {       
        string where = " where 1=1 ";

        if (ddltno.SelectedValue!= "")
        {
            where += " and a.tno='" + ddltno.SelectedValue + "' ";
        }

        if (ddltid.SelectedValue!= "")
        {
            where += " and a.tid=" + ddltid.SelectedValue + "";
        }



        GridView1.DataSource = SqlHelper.ExecuteforDataSet("select a.*,b.tname,c.title from jobs a  left join teachers b on a.tno=b.tno left join jobtype c on a.tid=c.tid " + where + " order by id desc");
        GridView1.DataBind();

    }

    /// <summary>