GJiJin_List.aspx.cs

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

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

        }
    }
    private void GetDate()
    {
        DataSet ds = DBHelper.GetDataSet("select * from TB_JiJin where GongHao='" + Session["username"].ToString() + "'");
        this.GridView1.DataSource = ds.Tables[0];
        this.GridView1.DataBind();
    }


    protected void Button1_Click(object sender, EventArgs e)
    {
        string SQL = "select * from TB_JiJin where GongHao='" + Session["username"].ToString() + "'";
     
        if (this.DropDownList2.SelectedIndex!=0)
        {
            SQL = SQL + " and NianFen='" + this.DropDownList2.SelectedItem.Text + "'";
        }

        if (this.DropDownList3.SelectedIndex != 0)
        {
            SQL = SQL + " and YueFen='" + this.DropDownList3.SelectedItem.Text + "'";
        }
        DataSet ds = DBHelper.GetDataSet(SQL);
        this.GridView1.DataSource = ds.Tables[0];
        this.GridView1.DataBind();
    }
}