diaodu/diaodulist.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 diaodu_diaodulist : 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 txtddyy_Click(object sender, EventArgs e)
    {
        string tda = this.txtda.Text;
        string tddyy = this.txtddyy.Text;
        string sql = "select  * from diaodu where 1=1";
        if (tda.Length == 0)
        {

        }
        else { 
        sql=sql+" and da='"+tda+"'";
        }
        if (tddyy.Length == 0)
        {

        }
        else {
            sql = sql + " and ddyy='"+tddyy+"'";
        }
        //Response.Write(sql);
        this.SqlDataSource1.SelectCommand = sql;
    }
}