App_Code/admins.cs

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using System;
using System.Data;
using System.Configuration;
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.OleDb;

/// <summary>
/// admins 的摘要说明
/// </summary>
public class admins
{
    comman com = new comman();
	public admins()
	{
		//
		// TODO: 在此处添加构造函数逻辑
		//
	}
    public bool checkadmin(string user, string pwd)
    {
        using (OleDbConnection con = new OleDbConnection(ConfigurationManager.AppSettings["ConnectionString"].ToString()))
        {

            string sqlstr = "select * from admin where admin=? and pwd=?";
            con.Open();
            OleDbCommand cmd = new OleDbCommand(sqlstr, con);
            cmd.Parameters.Add(new OleDbParameter("admin", OleDbType.VarChar, 50));
            cmd.Parameters["admin"].Value = user;

            cmd.Parameters.Add(new OleDbParameter("pwd", OleDbType.VarChar, 50));
            cmd.Parameters["pwd"].Value = pwd;

            //OleDbDataReader dr = cmd.ExecuteReader();
            OleDbDataReader dr = cmd.ExecuteReader();

            if (dr.Read())
            {
                con.Close();
                return true;

            }
            else
            {
                con.Close();
                return false;

            }


        }

    }
    public DataSet getbyID()
    {
        string strsql = "select * from admin ";