ObjectDataSourceDesigner.PreFilterProperties(IDictionary) Método

Definição

Usado pelo designer para remover propriedades da exibição ou adicionar outras propriedades a ela na grade Propriedades ou para sombrear propriedades do controle associado.Used by the designer to remove properties from or add additional properties to the display in the Properties grid or to shadow properties of the associated control.

protected:
 override void PreFilterProperties(System::Collections::IDictionary ^ properties);
protected override void PreFilterProperties (System.Collections.IDictionary properties);
override this.PreFilterProperties : System.Collections.IDictionary -> unit
Protected Overrides Sub PreFilterProperties (properties As IDictionary)

Parâmetros

properties
IDictionary

Uma coleção implementando o IDictionary das propriedades adicionadas e sombreadas.A collection implementing the IDictionary of the added and shadowed properties.

Exemplos

O exemplo de código a seguir mostra como substituir o PreFilterProperties método em uma classe que é herdada da ObjectDataSourceDesigner classe para alterar a grade de Propriedades de um controle que é derivado da ObjectDataSource classe em tempo de design.The following code example shows how to override the PreFilterProperties method in a class that is inherited from the ObjectDataSourceDesigner class to change the Properties grid of a control that is derived from the ObjectDataSource class at design time. O exemplo torna a NamingContainer Propriedade visível na grade de Propriedades .The example makes the NamingContainer property visible in the Properties grid.

// Shadow the 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
' Shadow the control properties with design-time properties.
Protected Overrides Sub PreFilterProperties( _
    ByVal properties As IDictionary)

    ' Call the base method first.
    MyBase.PreFilterProperties(properties)

    ' Make the NamingContainer visible in the Properties grid.
    Dim selectProp As PropertyDescriptor = _
        CType(properties("NamingContainer"), PropertyDescriptor)
    properties("NamingContainer") = _
        TypeDescriptor.CreateProperty(selectProp.ComponentType, _
            selectProp, BrowsableAttribute.Yes)
End Sub

Comentários

Designers de controle usam métodos que são derivados do ComponentDesigner.PreFilterProperties método para sombrear várias propriedades de controle com propriedades de tempo de design correspondentes que o designer implementa e para adicionar propriedades ou remover propriedades da grade de Propriedades .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.

O PreFilterProperties método cria propriedades de tempo de design para sombrear as TypeName SelectMethod Propriedades e do ObjectDataSource controle associado para que elas apareçam na grade de Propriedades do designer visual.The PreFilterProperties method creates design-time properties to shadow the TypeName and SelectMethod properties of the associated ObjectDataSource control so that they appear in the Properties grid of the visual designer.

Notas aos Herdeiros

Substitua o PreFilterProperties(IDictionary) método para adicionar propriedades ou alterar atributos de propriedades na coleção de propriedades de tempo de design.Override the PreFilterProperties(IDictionary) method to add properties to or change attributes of properties in the design-time property collection. Certifique-se de chamar o PreFilterProperties(IDictionary) método base antes de executar outro processamento.Be sure to call the PreFilterProperties(IDictionary) base method before performing other processing.

Aplica-se a

Confira também