如何从配置文件中获取连接字符串-Windows Service App C#4 [英] How to get a connection string from a config file - Windows Service App c# 4

问题描述

大家好，

我正在尝试使用C#4编写的Windows Service项目中的app.config文件检索SQLServer连接字符串.
我排在最前面...
使用System.Configuration;

然后我尝试参加开始活动...

Hi All,

I''m trying to retrieve a SQLServer connection string form my app.config file in my Windows Service project written in C# 4.

I''ve put at the top...
using System.Configuration;

then I try in my start event...

protected override void OnStart(string[] args)
 {
     try
     {
         cStr = ConfigurationManager.AppSettings["ConnectionString"].ToString();


     }
     catch (Exception e)
     {
         File.AppendAllText(Environment.CurrentDirectory + "\\ServiceMessages.txt", "\r\nOn start Error - " + e.Message);
     }
 }

cStr是之前声明的实例字符串.
但是它不会编译，并且我的聪明才智突出了ConfigurationManager一词，说它在当前上下文中不存在.

我在这里做错什么了?
谢谢.

cStr is an instance string declared earlier.
But it wont compile and my intellisence highlights the ConfigurationManager word saying it doesn''t exist in the current context.

What am I doing wrong here?
Thanks.

推荐答案

您需要使用命名空间System.Configuration ，并且还必须将对引用的引用添加到程序集System.Configuration.dll中.

希望对您有所帮助:)

You need to use the namespace System.Configuration and also have to add the reference to the assembly System.Configuration.dll

hope it helps :)

您是否尝试过定义完整的名称空间:

Have you tried defining the full namespace:

cStr = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"].ToString();

或定义

or defining

using System.Configuration;

这篇关于如何从配置文件中获取连接字符串-Windows Service App C#4的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！