AppDomain.GetData Method

Gets the value stored in the current application domain for the specified name.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

public Object GetData (
	string name
public final Object GetData (
	String name
public final function GetData (
	name : String
) : Object
Not applicable.



The name of a predefined application domain property, or the name of an application domain property you have defined.

Return Value

The value of the name property.

Exception typeCondition


name is a null reference (Nothing in Visual Basic).


The operation is attempted on an unloaded application domain.

Use this method to retrieve the value of an entry in an internal cache of name-data pairs that describe properties of this instance of AppDomain.

The cache automatically contains predefined system entries that are inserted when the application domain is created. You can inspect their values with the GetData method, or the equivalent AppDomainSetup properties.

You can insert or modify your own user defined name-data pairs with the SetData method and inspect their values with the GetData method.

The following table describes the name of each predefined system entry and its corresponding AppDomainSetup property.

Value of 'name'











(no property)













(application specific)



(no property)


"APP_LAUNCH_URL" represents the URL originally requested by the user, before any redirection. It is available only when the application has been launched with a browser such as Internet Explorer. Not all browsers provide this value.

The following code example creates a new application domain, sets a system-provided value for the domain, and adds a new value pair for the domain. The example then demonstrates how to use the GetData method to retrieve the data from these value pairs and display them to the console.

using System;
using System.Reflection;

class ADGetData 
    public static void Main() 
        // appdomain setup information
        AppDomain currentDomain = AppDomain.CurrentDomain;

        //Create a new value pair for the appdomain
        currentDomain.SetData("ADVALUE", "Example value");

        //get the value specified in the setdata method
        Console.WriteLine("ADVALUE is: " + currentDomain.GetData("ADVALUE"));

        //get a system value specified at appdomainsetup
        Console.WriteLine("System value for loader optimization: {0}",

/* This code example produces the following output:

ADVALUE is: Example value
System value for loader optimization: NotSpecified

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

Community Additions