Top.ascx.cs

（完整代码） 1KB 

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 Top : System.Web.UI.UserControl
{
    SqlHelper data = new SqlHelper();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            ddlGType.DataSource = data.GetDataReader("select * from GoodsBigType");
            ddlGType.DataTextField = "GoodsTypeName";
            ddlGType.DataValueField = "GoodsTypeID";
            ddlGType.DataBind();
            DropDownList1.DataSource = data.GetDataReader("select * from GoodsSamllType where BigId='" + ddlGType.SelectedValue + "'");
            DropDownList1.DataTextField = "Name";
            DropDownList1.DataValueField = "id";
            DropDownList1.DataBind();
            FoodType.DataSource = data.GetDataReader("select * from GoodsSamllType ");
            FoodType.DataBind();
        }
    }
    protected void ddlGType_SelectedIndexChanged(object sender, EventArgs e)
    {
        DropDownList1.DataSource = data.GetDataReader("select * from GoodsSamllType where BigId='" + ddlGType.SelectedValue + "'");
        DropDownList1.DataTextField = "Name";
        DropDownList1.DataValueField = "id";
        DropDownList1.DataBind();

    }

    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        Response.Redirect("SearchFood.aspx?BidId="+ddlGType.SelectedValue+"&sId="+DropDownList1.SelectedValue+"&Key="+TextBox1.Text);
    }
}

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