AppSettingsReader Constructor

public:
 AppSettingsReader();

public AppSettingsReader();

Public Sub New ()

Examples

The following example creates a configuration file that contains the <appSettings> section, and then uses the AppSettingsReader to read the settings just generated.

using System;
using System.Configuration;

class Program
{
    static void Main(string[] args)
    {
        var reader = new AppSettingsReader();

        var stringSetting = reader.GetValue("String setting", typeof(string));
        Console.WriteLine("String setting: " + stringSetting);

        var dateTimeSetting = reader.GetValue("DateTime setting", typeof(DateTime));
        Console.WriteLine("DateTime setting: " + dateTimeSetting);

        try
        {
            var missingSetting = reader.GetValue("Int setting", typeof(Int32));
        }
        catch (InvalidOperationException e)
        {
            Console.WriteLine("Missing key error: " + e.Message);
        }

        Console.WriteLine("Press any key to continue");
        Console.ReadKey();
    }
}

The following example demonstrates a configuration file used by the previous example.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <appSettings>
        <add key="String setting" value="String retrieved from App.Config"/>
        <add key="Date setting" value="Thursday, December 01, 2005 12:53:56 PM"/>
    </appSettings>
</configuration>

See also

• AppSettingsSection