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SectionInformation.AllowDefinition Property

Gets or sets a value that indicates where in the configuration file hierarchy the associated configuration section can be defined.

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

Public Property AllowDefinition As ConfigurationAllowDefinition

Property Value

Type: System.Configuration.ConfigurationAllowDefinition
A value that indicates where in the configuration file hierarchy the associated ConfigurationSection object can be declared.


The selected value conflicts with a value that is already defined.

AllowDefinition applies only to configuration files of Web applications. For client applications, you must use AllowExeDefinition.

The examples in this section show how to get the AllowDefinition property value after accessing the related section information in the configuration file.

The following example gets the SectionInformation object.

' Get the current configuration file. 
Dim config _
As System.Configuration.Configuration = _
ConfigurationManager.OpenExeConfiguration( _

' Get the section. 
Dim section As UrlsSection = _
CType(config.GetSection("MyUrls"), UrlsSection)

Dim sInfo As SectionInformation = _

The following example gets the AllowDefinition value.

Dim allowDefinition _
As ConfigurationAllowDefinition = _
Console.WriteLine("Allow definition: {0}", _

.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
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