Common/DB.cs

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using System;
using System.Collections.Generic;
using System.Web;
using System.Data;
using System.Data.Sql;
using System.Configuration;
using System.Data.SqlClient;
using System.Text;
using System.Security.Cryptography;




/// <summary>
/// 弹出信息
/// </summary>
/// 

namespace Common
{

    public class MessageAlert
    {

        /// <summary>
        /// 传入信息弹出来
        /// </summary>
        /// <param name="page"></param>
        /// <param name="msg"></param>
        public static void Alert(System.Web.UI.Page page, string msg)
        {

            page.ClientScript.RegisterStartupScript(page.GetType(), "msg", "<script>alert('" + msg + "');</script>");
        }
        /// <summary>
        /// 自定义脚本信息
        /// </summary>
        /// <param name="page"></param>
        /// <param name="msg"></param>
        public static void AlertLocation(System.Web.UI.Page page, string msg)
        {

            page.ClientScript.RegisterStartupScript(page.GetType(), "msg", "<script>" + msg + "</script>");
        }

    }


    /// <summary>
    ///DB数据库操作
    /// </summary>
    public class DB
    {
        public static string substr(string str, int num)
        {
            string strs;
            if (str.Length > num)
            {
                strs = str.Substring(0, num) + "...";