houtai/add_category.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;
using System.Data.SqlClient;
namespace 电子商务.houtai
{
    public partial class add_category : System.Web.UI.Page
    {
        SQLHelper db = new SQLHelper();
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bind();
                
            }
        }
        public void bind()
        {
            string sql = "select * from bigcategory";
            DataTable dt = db.ExecuteQuery(sql, CommandType.Text);
            this.ddl_big.DataSource = dt;
            this.ddl_big.DataTextField = "bigcategory";
            this.ddl_big.DataValueField = "big_id";
            this.ddl_big.DataBind();
        }
        //
        protected void Button2_Click(object sender, EventArgs e)
        {
            this.txt_category.Text = "";
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            int big_id = int.Parse(this.ddl_big.SelectedValue.ToString());
            string category = this.txt_category.Text.ToString();
            string sql = "insert into category(big_id,category) values('"+big_id+"','"+category+"')";
            db.ExecuteNonQuery(sql, CommandType.Text);
            Response.Write("<script>alert('添加成功！');location='add_category.aspx'</script>");
        }
    }
}