AppSettingsReader Class
Provides a method for reading values of a particular type from the configuration.
Assembly: System (in System.dll)
| Name | Description | |
|---|---|---|
 | AppSettingsReader() | Initializes a new instance of the AppSettingsReader class. |
| Name | Description | |
|---|---|---|
| Equals(Object^) | Determines whether the specified object is equal to the current object.(Inherited from Object.) |
 | Finalize() | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) |
| GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
| GetType() | |
| GetValue(String^, Type^) | Gets the value for a specified key from the AppSettings property and returns an object of the specified type containing the value from the configuration. |
| MemberwiseClone() | |
| ToString() | Returns a string that represents the current object.(Inherited from Object.) |
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>
Available since 1.1
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.