COMM/conn.cs

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using System;
using System.Data;
using System.Data.SqlClient;
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.Web.SessionState;
using System.Configuration;
using System.IO;
using System.Web.Mail;
/// <summary>
/// conn 的摘要说明
/// </summary>
namespace conn
{
    public class DbConn
    {
        public SqlConnection conn;
        //打开数据库
        public void open()
        {
            string tem = HttpContext.Current.Request.ServerVariables["Server_Name"].ToString();
            if (tem.IndexOf("localhost") > -1 || tem.IndexOf("192.168.") > -1 || tem.IndexOf("127.0.0.1") > -1)
            {
                conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString);
            }
            else
            {
                conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString);
            }
            conn.Open();
        }
        //关闭数据库
        public void close()
        {
            conn.Close();
        }
        //反回一个sqlcmd
        public SqlCommand cmd(string StoredProcedureName)
        {
            SqlCommand mycmd = new SqlCommand(StoredProcedureName, conn);
            return mycmd;
        }

        //执行数据库操作，并返回值
        public string exec(string sql, string result)
        {
            string restring = null;
            SqlCommand mycmd = new SqlCommand(sql, conn);
            try
            {
                mycmd.ExecuteNonQuery();
                restring = result;
            }
            catch (Exception ex)
            {