如何使用ConfigurationManager.AppSettings [英] How to use the ConfigurationManager.AppSettings

问题描述

我以前从未使用过"appSettings".您如何在C#中将此配置为与SqlConnection一起使用，这就是我用于"ConnectionStrings"的方式

I've never used the "appSettings" before. How do you configure this in C# to use with a SqlConnection, this is what I use for the "ConnectionStrings"

SqlConnection con = new SqlConnection();
con.ConnectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

这就是我需要的"appSettings"

And this is what I have for the "appSettings"

SqlConnection con = new SqlConnection();
con = ConfigurationManager.AppSettings("ConnectionString");

但它不起作用.

推荐答案

ConfigurationManager.AppSettings 实际上是一个属性，因此您需要使用方括号.

ConfigurationManager.AppSettings is actually a property, so you need to use square brackets.

总体来说，这是您需要做的:

Overall, here's what you need to do:

SqlConnection con= new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"]);

问题是您试图将con设置为字符串，这是不正确的.您必须将其传递给构造函数或设置con.ConnectionString属性.

The problem is that you tried to set con to a string, which is not correct. You have to either pass it to the constructor or set con.ConnectionString property.

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