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AppDomain.BaseDirectory Property

Gets the base directory that the assembly resolver uses to probe for assemblies.

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

public string BaseDirectory { get; }

Property Value

Type: System.String
The base directory that the assembly resolver uses to probe for assemblies.




The operation is attempted on an unloaded application domain.

This property corresponds to the AppDomainSetup.ApplicationBase property. It can also be retrieved using the GetData method with the string "APPBASE".

The following code example creates a new application domain, specifying a base directory to use when searching for assemblies to load into the domain. The example then uses the BaseDirectory property to obtain the base directory path, for display to the console.

using System;
using System.Reflection;
using System.Security.Policy;  

class ADSetup
    public static void Main()
        // Create application domain setup information
        AppDomainSetup domaininfo = new AppDomainSetup();
        domaininfo.ConfigurationFile = System.Environment.CurrentDirectory + "ADSetup.exe.config";
        domaininfo.ApplicationBase = System.Environment.CurrentDirectory;

        //Create evidence for the new appdomain from evidence of the current application domain
        Evidence adevidence = AppDomain.CurrentDomain.Evidence;

        // Create appdomain
        AppDomain domain = AppDomain.CreateDomain("MyDomain", adevidence, domaininfo);

        // Write out application domain information
        Console.WriteLine("Host domain: " + AppDomain.CurrentDomain.FriendlyName);
        Console.WriteLine("child domain: " + domain.FriendlyName);
        Console.WriteLine("Configuration file is: " + domain.SetupInformation.ConfigurationFile);
        Console.WriteLine("Application Base Directory is: " + domain.BaseDirectory);


Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0