admin/jinhuo/List.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

public partial class admin_jinhuo_List : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DataSet dstid = SqlHelper.ExecuteforDataSet("select id,mingcheng from supplier");
            ddltid.DataSource = dstid;
            ddltid.DataTextField = "mingcheng";
            ddltid.DataValueField = "id";
            ddltid.DataBind();
            ddltid.Items.Insert(0, new ListItem("---全部---", ""));
            bind();
        }
    }

    /// <summary>
    /// 绑定
    /// </summary>
    private void bind()
    {
        string where = " where 1=1 ";
        if (this.shijian.Text != "")
        {
            where += " and shijian like '" + this.shijian.Text + "' ";
        }
        if (ddltid.SelectedValue != "")
        {
            where += " and a.supplierID=" + ddltid.SelectedValue + "";
        }
        GridView1.DataSource = SqlHelper.ExecuteforDataSet("select a.*,b.mingcheng,c.pname from jinhuo a left join supplier b on a.supplierID=b.ID left join products c on a.productID=c.pid" + where + " order by a.id desc");
        GridView1.DataBind();

    }

    /// <summary>
    /// 分页事件
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        bind();
    }

    /// <summary>
    /// 搜索
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void btnSearch_Click(object sender, EventArgs e)