AppDomain.IsDefaultAppDomain Method

Returns a value that indicates whether the application domain is the default application domain for the process.

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

Public Function IsDefaultAppDomain As Boolean

Return Value

Type: System.Boolean
true if the current AppDomain object represents the default application domain for the process; otherwise, false.

Every managed process has a default application domain. Execution begins in the default domain.

The following code example creates a second application domain and displays information about the default domain and the new domain.

Imports System
Imports System.Reflection

Public Class Example

    ' The following attribute indicates to the loader that assemblies  
    ' in the global assembly cache should be shared across multiple 
    ' application domains.
    <LoaderOptimizationAttribute(LoaderOptimization.MultiDomainHost)> _
    Public Shared Sub Main() 
        ' Show information for the default application domain.

        ' Create a new application domain and display its information. 
        Dim newDomain As AppDomain = AppDomain.CreateDomain("MyMultiDomain")
        newDomain.DoCallBack(AddressOf ShowDomainInfo)

    End Sub 'Main

    ' This method has the same signature as the CrossAppDomainDelegate, 
    ' so that it can be executed easily in the new application domain. 
    Public Shared Sub ShowDomainInfo() 
        Dim ad As AppDomain = AppDomain.CurrentDomain
        Console.WriteLine("FriendlyName: {0}", ad.FriendlyName)
        Console.WriteLine("Id: {0}", ad.Id)
        Console.WriteLine("IsDefaultAppDomain: {0}", ad.IsDefaultAppDomain())

    End Sub  
End Class

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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