AppSettings get value from .config file

Question

This works for me:

string value = System.Configuration.ConfigurationManager.AppSettings[key];

The answer that dtsg gave works:

string filePath = ConfigurationManager.AppSettings["ClientsFilePath"];

BUT, you need to add an assembly reference to

System.Configuration

Go to your Solution Explorer and right click on References and select Add reference. Select the Assemblies tab and search for Configuration.

Here is an example of my App.config:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
  <appSettings>
    <add key="AdminName" value="My Name"/>
    <add key="AdminEMail" value="MyEMailAddress"/>
  </appSettings>
</configuration>

Which you can get in the following way:

string adminName = ConfigurationManager.AppSettings["AdminName"];

Give this a go:

string filePath = ConfigurationManager.AppSettings["ClientsFilePath"];

Read From Config :

You'll need to add a reference to Config

1. Open "Properties" on your project
2. Go to "Settings" Tab
3. Add "Name" and "Value"
4. Get Value with using following code :

string value = Properties.Settings.Default.keyname;

Save to Config :

Properties.Settings.Default.keyName = value;
Properties.Settings.Default.Save();