?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 adminadd : System.Web.UI.Page
{
    SqlCommand cmd, cmd1;
    SqlConnection cn;
    SqlDataReader dr;
    SqlDataAdapter da, da1;
    DataSet ds = new DataSet();
    string strsql1, strsql2;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["adminname"] == null)
        {
            Response.Redirect("index.aspx");
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (this.IsValid)
        {
            cn = sqldata.createcon();
            cn.Open();
            strsql2 = "select * from admin where adminname='" + this.txtadminname .Text.ToString().Trim() + "'";
            cmd1 = new SqlCommand(strsql2, cn);
            dr = cmd1.ExecuteReader();
            if (dr.Read())
            {
                Session["adminname"] = dr["adminname"].ToString().Trim();
                this.Label1.Text = "要添加的管理員已經(jīng)存在了.";

            }
            else
            {
                dr.Close();
                strsql1 = "insert into admin(adminname,adminpwd)values('" + this.txtadminname .Text.ToString().Trim() + "','"+this.txtadminpwd .Text .ToString ().Trim ()+"')";
                cmd = new SqlCommand(strsql1, cn);
                cmd.ExecuteNonQuery();

                cn.Close();
                this.Label1.Text = "添加成功";
            }
        }
    }
}