deletezh.aspx.cs

一个较小的采购系统,一些比较实际的代码,可以用来参考

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;
using System.Data.SqlClient;

public partial class deleteZH : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        if (!IsPostBack)
        {
            classZH zh = new classZH();
            SqlDataReader dr = zh.drZH();
            while (dr.Read())
            {
                this.ddltZH.Items.Add(dr.GetValue(0).ToString().Trim());
            }
        }
        

        if (this.ddltZH.SelectedItem.Text != "")
        {
            SqlConnection conn = new SqlConnection();
            conn.ConnectionString = ConfigurationManager.AppSettings["ConnectionString"];
            conn.Open();
            SqlCommand cmd = new SqlCommand("select user_area,user_name from info where user_UID = '" + this.ddltZH.SelectedItem.Text + "'", conn);
            SqlDataReader dr2 = cmd.ExecuteReader();
            dr2.Read();
            try
            {

                this.lblname.Text = dr2["user_name"].ToString();
                this.lblarea.Text = dr2["user_area"].ToString();
                conn.Close();
            }
            catch (Exception ex)
            {   
                this.lblarea.Text = "帐号已删除";
            }
        }     
          
          
       
    }
    protected void ddltZH_SelectedIndexChanged(object sender, EventArgs e)
    {
    }
    protected void btnDelete_Click(object sender, EventArgs e)
    {
        if (this.ddltZH.Items.Count != null)
        {
            classZH delete = new classZH();
            delete.deleteZH(this.ddltZH.SelectedItem.Text);
        }
        else
        {
            Response.Write("<script>alert('没有可选的帐号')</script>");
        }
       
    }
}