BaseFieldControl Class (Microsoft.SharePoint.WebControls)

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BaseFieldControl Class (Microsoft.SharePoint.WebControls)

Renders a field on a form page (not a list view page) by using one or more child controls such as a label, link, or text box control.

Namespace: Microsoft.SharePoint.WebControls
Assembly: Microsoft.SharePoint (in microsoft.sharepoint.dll)

Syntax

Visual Basic (Declaration)

<SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel:=True)> _
<AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level:=AspNetHostingPermissionLevel.Minimal)> _
<SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel:=True)> _
<AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public MustInherit Class BaseFieldControl
    Inherits FieldMetadata
    Implements IValidator

Visual Basic (Usage)

Dim instance As BaseFieldControl

[SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel=true)] 
[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
[SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel=true)] 
[AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
public abstract class BaseFieldControl : FieldMetadata, IValidator

Remarks

Use this class as a base class for deriving controls to render specific types of fields on lists forms (but not on list views).

Objects of the BaseFieldControl type are primarily used as the value of the SPField.FieldRenderingControl property.

Inheritance Hierarchy

System.Object
   System.Web.UI.Control
     Microsoft.SharePoint.WebControls.SPControl
       Microsoft.SharePoint.WebControls.TemplateBasedControl
         Microsoft.SharePoint.WebControls.FormComponent
           Microsoft.SharePoint.WebControls.FieldMetadata
            Microsoft.SharePoint.WebControls.BaseFieldControl
               Derived Classes

Thread Safety

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

Reference

BaseFieldControl Members
Microsoft.SharePoint.WebControls Namespace

Other Resources

Patterns of Custom Field Rendering
Custom Field Types
Walkthrough: Creating a Custom Field Type