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PreFilterProperties Method

LoginViewDesigner.PreFilterProperties Method

Used by the designer to remove properties from or add properties to the display in the Properties grid or to shadow properties of the associated control.

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

protected override void PreFilterProperties(
	IDictionary properties
)

Parameters

properties
Type: System.Collections.IDictionary

A collection implementing the IDictionary of the added or shadowed properties.

Control designers use methods that are derived from the ComponentDesigner.PreFilterProperties method to shadow various control properties with corresponding design-time properties that the designer implements, and to add properties to or remove properties from the Properties grid.

The PreFilterProperties method applies the BrowsableAttribute attribute of the RoleGroups property so that it does not appear in the Properties grid.

Notes to Inheritors:

Override the PreFilterProperties method to add properties to, remove properties from, or change attributes of properties in the design-time property collection. Be sure to call the PreFilterProperties base method before performing other processing.

The following code example shows how to override the PreFilterProperties method in a class that is inherited from the LoginViewDesigner class to change the Properties grid of a control that is derived from the LoginView class at design time. The example makes the NamingContainer property visible in the Properties grid.

// Shadow control properties with design-time properties. 
protected override void PreFilterProperties(IDictionary properties)
{
    // Call the base method first. 
    base.PreFilterProperties(properties);

    // Make the NamingContainer visible in the Properties grid.
    PropertyDescriptor selectProp = 
        (PropertyDescriptor)properties["NamingContainer"];
    properties["NamingContainer"] =
        TypeDescriptor.CreateProperty(selectProp.ComponentType, 
            selectProp, BrowsableAttribute.Yes);
} // PreFilterProperties

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0

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