ConfigurationSettings.AppSettings is obsolete [duplicate]

Question

The following code works fine:

string api_url = ConfigurationSettings.AppSettings["api-url"].ToString();

with a warning message as follows:

'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: '"This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings"'

As suggested by the warning message, I tried replacing ConfigurationSettings.AppSettings with ConfigurationManager.AppSettings

string api_url = ConfigurationManager.AppSettings["api-url"].ToString();

Now an error message appears, stating:

The name 'ConfigurationManager' does not exist in the current context

These are the namespaces imported:

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Configuration;

Please help me.

Community · Accepted Answer · 2017-05-23 12:18:10Z

Not only do you need to add System.Configuration in front of ConfigurationManager.AppSettings["api-url"].ToString(); you also have to add the reference to the assembly System.Configuration.dll.

Here is link to similar question The name 'ConfigurationManager' does not exist in the current context

manojlds · Accepted Answer · 2013-03-23 16:40:34Z

Add a reference to System.Configuration. The deprecated one was in System.dll but the same namespace System.Configuration

Nick Binnet · Accepted Answer · 2013-03-23 16:38:44Z

2

Add reference to System.Configuration.

answered Mar 23, 2013 at 16:38

Nick Binnet

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