AppDomainSetup.DynamicBase Property

Gets or sets the base directory where the directory for dynamically generated files is located.

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

public string DynamicBase { get; set; }
/** @property */
public final String get_DynamicBase ()

/** @property */
public final void set_DynamicBase (String value)

public final function get DynamicBase () : String

public final function set DynamicBase (value : String)

Not applicable.

Property Value

A String that specifies the directory where the AppDomain.DynamicDirectory is located.

Exception typeCondition


This property cannot be set because the application name on the application domain is a null reference (Nothing in Visual Basic).

When an AppDomain is created, a directory called the Dynamic Directory can be specified to store dynamic assemblies. This directory is logically located under the ApplicationBase, although it can reside in another part of the directory.

The following example demonstrates how to use the DynamicBase property to set the path where dynamic assemblies are stored for a new application domain.

using System;
using System.Reflection;
using System.Reflection.Emit;

namespace AppDomainSnippets
    class ADDynamicBase
        // SetDynamicBase.exe
        static void Main(string[] args)
            // Create a new AppDomain.
            AppDomainSetup setup = new AppDomainSetup();
            // Need to set the application name before setting the dynamic base.
            setup.ApplicationName = "MyApplication";
            AppDomain domain = AppDomain.CreateDomain("MyDomain", null, setup);

            // Tell the domain to search for assemblies in subdirectories
            // of DynamicAssemblyDir.
            // Note that the actual dynamic directory has the form
            // <DynamicBase>\<number>\<ApplicationName>, rather than
            // simply <DynamicBase>.
            String dynamicDir = domain.DynamicDirectory;
            // The AssemblyBuilder won't create this directory automatically.

            // Define the dynamic assembly.
            AssemblyName asmName = new AssemblyName();
            asmName.Name = "DynamicHelloWorld";
            AssemblyBuilder asm = AppDomain.CurrentDomain.DefineDynamicAssembly
                (asmName, AssemblyBuilderAccess.Save, dynamicDir);

            // Define a dynamic module in the assembly.
            ModuleBuilder mod;
            mod = asm.DefineDynamicModule
                ("DynamicHelloWorld", "DynamicHelloWorld.dll");

            // Define the "HelloWorld" type in the module.
            TypeBuilder typ = mod.DefineType
                ("HelloWorld", TypeAttributes.Public);

            // Define the "SayHello" method.
            MethodBuilder meth = typ.DefineMethod
                ("SayHello", MethodAttributes.Public, null, null);
            ILGenerator il = meth.GetILGenerator();
            il.EmitWriteLine("Hello World!");

            // Complete the HelloWorld type.
            // Save the assembly to the dynamic assembly directory.

            // Launch MyExecutable.exe, which will load DynamicHelloWorld.dll.

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