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AutoGeneratedField Class

Note: This class is new in the .NET Framework version 2.0.

Represents an automatically generated field in a data-bound control. This class cannot be inherited.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

'Declaration
Public NotInheritable Class AutoGeneratedField
	Inherits BoundField
'Usage
Dim instance As AutoGeneratedField

public final class AutoGeneratedField extends BoundField
public final class AutoGeneratedField extends BoundField

The AutoGeneratedField class is used to represent an automatically generated field in a data-bound control, such as GridView or DetailsView. Automatically generated fields are created by a data-bound control when the appropriate property is set to true (for example, the AutoGenerateColumns property for the GridView control, the AutoGenerateRows property for the DetailsView control, and so on).

NoteNote

Automatically generated fields are not added to the field collection of a data-bound control (for example, the Columns collection for the GridView control, the Fields collection for the DetailsView control, and so on).

The AutoGeneratedField class is intended for use internally by data-bound controls. Unlike other data fields (such as BoundField, CheckBoxField, TemplateField, and so on), the AutoGeneratedField class cannot be placed declaratively on a page as part of a field collection. Although you can programmatically add an AutoGeneratedField object to a field collection, this design pattern should be avoided.

Because automatically generated fields represent the automatic rendering of a field, data-bound controls do not typically allow users to modify the properties of the AutoGeneratedField objects. If the automatic rendering is not suitable for your needs, define your own data fields for the field collection of the control.

The following example demonstrates how to create an AutoGeneratedField object for a custom control that derives from the DetailsView control.


Imports System.ComponentModel
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Security.Permissions
Imports System.Web

Namespace Samples.AspNet.VB.Controls

    <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal), AspNetHostingPermission(SecurityAction.InheritanceDemand, Level:=AspNetHostingPermissionLevel.Minimal)> Public Class SimpleCustomControl
        Inherits System.Web.UI.WebControls.DetailsView

        Protected Overrides Function CreateAutoGeneratedRow(ByVal fieldProperties As AutoGeneratedFieldProperties) As AutoGeneratedField

            ' Create an AutoGeneratedField object.
            Dim field As New AutoGeneratedField(fieldProperties.DataField)

            ' Set the properties of the AutoGeneratedField using
            ' the values from the AutoGeneratedFieldProperties 
            ' object contained in the fieldProperties parameter.
            CType(field, IStateManager).TrackViewState()
            field.HeaderText = fieldProperties.Name
            field.SortExpression = fieldProperties.Name
            field.ReadOnly = fieldProperties.IsReadOnly
            field.DataType = fieldProperties.Type

            Return field

        End Function

    End Class

End Namespace


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0

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