using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Text;
using?System.Threading.Tasks;
using?System.Data.SqlClient;
using?System.IO;

namespace?SendMailDemo
{
????public?class?Conn
????{
????????public?static?string?StrConn
????????{
????????????get
????????????{
????????????????//讀取文本文件（txt）
????????????????//return?Conn.getValue（@“C:\Users\Brambling\Desktop\Demo\SendMail\SendMail\DB_Config\DB_Config.txt“?“StrConn“）;

????????????????//讀取配置文件
????????????????//return?ConfigurationManager.ConnectionStrings[“StrConn“].ToString（）;
????????????????//return?ConfigurationManager.AppSettings[“Conn“].ToString（）;

????????????????//直接返回數據庫連接字符串
????????????????return?“Data?Source=.;Initial?Catalog=TC_MES_WEB_ADMIN;User?ID=sa;Pwd=jm123!@#;Enlist=true;Pooling=true;Max?Pool?Size=300;Min?Pool?Size=0;Connection?Lifetime=300;packet?size=1000“;
????????????}
????????}

????????public?static?SqlConnection?SqlConn
????????{
????????????get
????????????{
????????????????return?new?SqlConnection（StrConn）;
????????????}
????????}

????????private?static?string?getValue（string?path?string?name）
????????{
????????????string[]?str?=?File.ReadAllLines（path）;
????????????for?（int?i?=?0;?i?????????????{
????????????????if?（str[i].StartsWith（name））
????????????????{
????????????????????return?str[i].Replace（name?+?“=“?““）;
????????????????}
????????????}
????????????return?““;
????????}
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-04-18?16:21??SendMailDemo\
?????目錄???????????0??2018-04-18?16:21??SendMailDemo\.vs\
?????目錄???????????0??2018-04-18?16:21??SendMailDemo\.vs\SendMailDemo\
?????目錄???????????0??2018-04-18?16:21??SendMailDemo\.vs\SendMailDemo\v14\
?????文件???????43008??2018-04-18?21:18??SendMailDemo\.vs\SendMailDemo\v14\.suo
?????目錄???????????0??2018-04-18?22:11??SendMailDemo\SendMailDemo\
?????文件????????1003??2018-04-18?16:21??SendMailDemo\SendMailDemo.sln
?????文件?????????189??2018-04-18?16:21??SendMailDemo\SendMailDemo\App.config
?????目錄???????????0??2018-04-18?16:21??SendMailDemo\SendMailDemo\bin\
?????目錄???????????0??2018-04-18?21:16??SendMailDemo\SendMailDemo\bin\Debug\
?????文件?????1602560??2014-06-26?06:40??SendMailDemo\SendMailDemo\bin\Debug\NPOI.dll
?????文件??????419840??2014-06-27?15:44??SendMailDemo\SendMailDemo\bin\Debug\NPOI.OOxml.dll
?????文件??????422053??2014-06-27?15:44??SendMailDemo\SendMailDemo\bin\Debug\NPOI.OOxml.xml
?????文件???????85504??2014-06-27?15:44??SendMailDemo\SendMailDemo\bin\Debug\NPOI.Openxml4Net.dll
?????文件??????153211??2014-06-27?15:44??SendMailDemo\SendMailDemo\bin\Debug\NPOI.Openxml4Net.xml
?????文件?????1869824??2014-06-27?15:44??SendMailDemo\SendMailDemo\bin\Debug\NPOI.OpenxmlFormats.dll
?????文件???????17408??2018-04-18?22:09??SendMailDemo\SendMailDemo\bin\Debug\SendMailDemo.exe
?????文件?????????189??2018-04-18?16:21??SendMailDemo\SendMailDemo\bin\Debug\SendMailDemo.exe.config
?????文件???????32256??2018-04-18?22:09??SendMailDemo\SendMailDemo\bin\Debug\SendMailDemo.pdb
?????文件???????22696??2018-04-18?22:11??SendMailDemo\SendMailDemo\bin\Debug\SendMailDemo.vshost.exe
?????文件?????????189??2018-04-18?16:21??SendMailDemo\SendMailDemo\bin\Debug\SendMailDemo.vshost.exe.config
?????文件?????????490??2015-10-22?09:54??SendMailDemo\SendMailDemo\bin\Debug\SendMailDemo.vshost.exe.manifest
?????文件????????1547??2018-04-18?16:52??SendMailDemo\SendMailDemo\Conn.cs
?????文件???????19026??2018-04-18?22:11??SendMailDemo\SendMailDemo\Form1.cs
?????文件????????2032??2018-04-18?16:23??SendMailDemo\SendMailDemo\Form1.Designer.cs
?????文件????????5817??2018-04-18?16:23??SendMailDemo\SendMailDemo\Form1.resx
?????目錄???????????0??2018-04-18?16:21??SendMailDemo\SendMailDemo\obj\
?????目錄???????????0??2018-04-18?21:28??SendMailDemo\SendMailDemo\obj\Debug\
?????文件????????1464??2018-04-18?20:43??SendMailDemo\SendMailDemo\obj\Debug\DesignTimeResolveAssemblyReferences.cache
?????文件????????7525??2018-04-18?21:16??SendMailDemo\SendMailDemo\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????文件?????????965??2018-04-18?22:11??SendMailDemo\SendMailDemo\obj\Debug\SendMailDemo.csproj.FileListAbsolute.txt
............此處省略19個文件信息