AppSettingsReader AppSettingsReader AppSettingsReader Constructor


Initializes a new instance of the AppSettingsReader class.

public AppSettingsReader ();
Public Sub New ()


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);  

            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");  

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

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

Applies to

See also