ConfigurationSettings.AppSettings is obsolete

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'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: '"This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings"'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

score 34 · Accepted Answer · edited May 23 '17 at 12:18

34

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

edited May 23 '17 at 12:18

Community

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answered Mar 23 '13 at 16:32

Vortex

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score 3 · Answer 2 · answered Mar 23 '13 at 16:40

3

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

answered Mar 23 '13 at 16:40

manojlds

290,304
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score 2 · Answer 3 · answered Mar 23 '13 at 16:38

2

Add reference to System.Configuration.

answered Mar 23 '13 at 16:38

Nick Binnet

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ConfigurationSettings.AppSettings is obsolete

3 Answers3