'System.Configuration.ConfigurationSettings.AppSettings' is obsolete

Question

I got the following warning

\'System.Configuration.ConfigurationSettings.AppSettings\' is obsolete: \'\"This method is obsolete, it has been replace

Answer 1

as its a warning i dont think it matters unless you have turned off a treat warnings as errors setting

add a reference to System.Configuration

all you have to do is to update to the latest code so where you used ConfigurationSettings.AppSettings[""] change to ConfigurationManager.AppSettings[""]

and this should work

Answer 2

I had the same problem in a C# project and I fixed it by writing appSettings instead of AppSettings in the XML file (camelCase expected) in the tag

<appSettings>
  <add key="myKey" value="my Value"/>
<appSettings>

After all C# is case sensitive

Answer 3

Just replace
System.Configuration.ConfigurationSettings.AppSettings
with
System.Configuration!System.Configuration.ConfigurationManager.AppSettings
in your code.

Answer 4

I also face same issue, sometimes the assembly reference not loaded properly or if you are using multiple projects it give problems sometimes. You just add reference to assembly. Right Click>Add Reference>.Net>System.configuration> Click OK You can see now there are many configuration options available choose ConfigurationManager.AppSetting["Con"].ToString();

Build and Smile :)

Answer 5

Add a reference to the assembly System.Configuration.

Then at the top (assuming C#) using System.Configuration (Imports System.Configuration in VB.NET).

Use ConfigurationManager.AppSettings["MySetting"] to access the settings!

Answer 6

example:

replace

string smtpServer = System.Configuration.ConfigurationSettings.AppSettings["EmailServer"];

with

string smtpServer = ConfigurationManager.AppSettings["EmailServer"];

also make sure on the top of the case you add:

using System.Configuration;