stock/stocklist.aspx.cs

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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
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.Xml.Linq;

public partial class stock_stocklist : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        string riqi = this.riqi.Text;
        if (riqi.Length == 0)
        {
            this.SqlDataSource1.SelectCommand = "SELECT a.*,b.companyname,c.commodityName FROM stock a,company b ,commodity c where a.companyid=b.cp_id and a.commodityid=c.c_id ";
        }
        else {
            this.SqlDataSource1.SelectCommand = "SELECT a.*,b.companyname,c.commodityName FROM stock a,company b ,commodity c where a.companyid=b.cp_id and a.commodityid=c.c_id and a.stockdate like'%" + riqi + "%'";
        }
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        this.riqi.Text = "";
        this.SqlDataSource1.SelectCommand = "SELECT a.*,b.companyname,c.commodityName FROM stock a,company b ,commodity c where a.companyid=b.cp_id and a.commodityid=c.c_id ";
    }
}