How To: Access the Schema

The following classes are used with the Active Directory Domain Services schema.

• ActiveDirectorySchema
• ActiveDirectorySchemaClass
• ActiveDirectorySchemaClassCollection
• ActiveDirectorySchemaProperty
• ActiveDirectorySchemaPropertyCollection

The GetCurrentSchema static method can be used to obtain the ActiveDirectorySchema object that represents the schema for the forest that the currently logged-on user is a member of.

The following examples demonstrate how to use the System.DirectoryServices.ActiveDirectory namespace to work with the Active Directory Domain Services schema.

• How To: Access the Schema
• How To: Access the Schema

Enumerating Schema Classes

The following C# example shows how to enumerate all of the classes in a specified schema.

using System.DirectoryServices.ActiveDirectory;

static void EnumSchemaClasses(ActiveDirectorySchema schema)
{
    foreach (ActiveDirectorySchemaClass schemaClass in 
        schema.FindAllClasses())
    {
        Console.WriteLine(schemaClass.Name);
    }
}

The following Visual Basic .NET example shows how to enumerate all of the classes in a specified schema.

Imports System.DirectoryServices.ActiveDirectory

Sub EnumSchemaClasses(ByVal schema As ActiveDirectorySchema)
    Dim schemaClass As ActiveDirectorySchemaClass
    For Each schemaClass In schema.FindAllClasses()
        Console.WriteLine(schemaClass.Name)
    Next schemaClass
End Sub 'EnumSchemaClasses

The following C# example shows how to enumerate all classes of the specified type in a specified schema.

using System.DirectoryServices.ActiveDirectory;

static void EnumSchemaClasses(ActiveDirectorySchema schema, 
    SchemaClassType classType)
{
    foreach (ActiveDirectorySchemaClass schemaClass in 
        schema.FindAllClasses(classType))
    {
        Console.WriteLine(schemaClass.Name);
    }
}

The following Visual Basic .NET example shows how to enumerate all classes of the specified type in a specified schema.

Imports System.DirectoryServices.ActiveDirectory

Sub EnumSchemaClasses(ByVal schema As ActiveDirectorySchema, _
ByVal classType As SchemaClassType)
    Dim schemaClass As ActiveDirectorySchemaClass
    For Each schemaClass In schema.FindAllClasses(classType)
        Console.WriteLine(schemaClass.Name)
    Next schemaClass
End Sub 'EnumSchemaClasses

The following C# example shows how to enumerate all defunct classes in a specified schema.

using System.DirectoryServices.ActiveDirectory;

static void EnumDefunctSchemaClasses(ActiveDirectorySchema schema)
{
    foreach (ActiveDirectorySchemaClass schemaClass in
        schema.FindAllDefunctClasses())
    {
        Console.WriteLine(schemaClass.Name);
    }
}

The following Visual Basic .NET example shows how to enumerate all defunct classes in a specified schema.

Imports System.DirectoryServices.ActiveDirectory

Sub EnumDefunctSchemaClasses(ByVal schema As ActiveDirectorySchema)
    Dim schemaClass As ActiveDirectorySchemaClass
    For Each schemaClass In schema.FindAllDefunctClasses()
         Console.WriteLine(schemaClass.Name)
    Next schemaClass
End Sub 'EnumDefunctSchemaClasses

Enumerating Schema Properties

The following C# example shows how to enumerate all of the properties in a specified schema.

using System.DirectoryServices.ActiveDirectory;

static void EnumSchemaProperties(ActiveDirectorySchema schema)
{
    foreach (ActiveDirectorySchemaProperty schemaProperty in 
        schema.FindAllProperties())
    {
        Console.WriteLine(schemaProperty.Name);
    }
}

The following Visual Basic .NET example shows how to enumerate all of the properties in a specified schema.

Imports System.DirectoryServices.ActiveDirectory

Sub EnumSchemaProperties(ByVal schema As ActiveDirectorySchema)
    Dim schemaProperty As ActiveDirectorySchemaProperty
    For Each schemaProperty In schema.FindAllProperties()
        Console.WriteLine(schemaProperty.Name)
    Next schemaProperty
End Sub 'EnumSchemaProperties

The following C# example shows how to enumerate all of the properties of a specific type in a specified schema.

using System.DirectoryServices.ActiveDirectory;

static void EnumSchemaProperties(ActiveDirectorySchema schema, 
    PropertyTypes propertyType)
{
    foreach (ActiveDirectorySchemaProperty schemaProperty in 
        schema.FindAllProperties(propertyType))
    {
        Console.WriteLine(schemaProperty.Name);
    }
}

The following Visual Basic .NET example shows how to enumerate all of the properties of a specific type in a specified schema.

Imports System.DirectoryServices.ActiveDirectory

Sub EnumSchemaProperties(ByVal schema As ActiveDirectorySchema, _
ByVal propertyType As PropertyTypes)
    Dim schemaProperty As ActiveDirectorySchemaProperty
    For Each schemaProperty In schema.FindAllProperties(propertyType)
        Console.WriteLine(schemaProperty.Name)
    Next schemaProperty
End Sub 'EnumSchemaProperties

The following C# example shows how to enumerate all defunct properties in a specified schema.

using System.DirectoryServices.ActiveDirectory;

static void EnumDefunctSchemaProperties(ActiveDirectorySchema schema)
{
    foreach (ActiveDirectorySchemaProperty schemaProperty in
        schema.FindAllDefunctProperties())
    {
        Console.WriteLine(schemaProperty.Name);
    }
}

The following Visual Basic .NET example shows how to enumerate all defunct properties in a specified schema.

Imports System.DirectoryServices.ActiveDirectory

Sub EnumDefunctSchemaProperties(ByVal schema As ActiveDirectorySchema)
    Dim schemaProperty As ActiveDirectorySchemaProperty
    For Each schemaProperty In schema.FindAllDefunctProperties()
        Console.WriteLine(schemaProperty.Name)
    Next schemaProperty
End Sub 'EnumDefunctSchemaProperties

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