ColorBuilder Classe

Riferimento

Definizione

Spazio dei nomi:: System.Web.UI.Design

Assembly:: System.Design.dll

Importante

Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.

Fornisce un generatore di stringhe di colori HTML in fase di progettazione, che consente all'utente di selezionare un colore.

public ref class ColorBuilder sealed

public sealed class ColorBuilder

type ColorBuilder = class

Public NotInheritable Class ColorBuilder

Ereditarietà: Object
ColorBuilder

Esempio

// Create a parent control.
System::Windows::Forms::Control^ c = gcnew System::Windows::Forms::Control;
c->CreateControl();

// Launch the Color Builder using the specified control
// parent and an initial HTML format (S"RRGGBB") color String*.
System::Web::UI::Design::ColorBuilder::BuildColor( this->Component, c, "405599" );

// Create a parent control.
System.Windows.Forms.Control c = new System.Windows.Forms.Control();            
c.CreateControl();            

// Launch the Color Builder using the specified control 
// parent and an initial HTML format ("RRGGBB") color string.
System.Web.UI.Design.ColorBuilder.BuildColor(this.Component, c, "405599");

' Create a parent control.
Dim c As New System.Windows.Forms.Control()
c.CreateControl()

' Launch the Color Builder using the specified control 
' parent and an initial HTML format ("RRGGBB") color string.
System.Web.UI.Design.ColorBuilder.BuildColor(Me.Component, c, "405599")

// Example designer provides a designer verb menu command to launch the
// BuildColor method of the ColorBuilder.
public ref class ColorBuilderDesigner: public System::Web::UI::Design::UserControlDesigner
{
public:
   ColorBuilderDesigner(){}


   property System::ComponentModel::Design::DesignerVerbCollection^ Verbs 
   {

      // Provides a designer verb menu command for invoking the BuildColor
      // method of the ColorBuilder.
      [PermissionSetAttribute(SecurityAction::Demand, Name="FullTrust")]
      virtual System::ComponentModel::Design::DesignerVerbCollection^ get() override
      {
         DesignerVerbCollection^ dvc = gcnew DesignerVerbCollection;
         dvc->Add( gcnew DesignerVerb( "Launch Color Builder UI",gcnew EventHandler( this, &ColorBuilderDesigner::launchColorBuilder ) ) );
         return dvc;
      }

   }

private:

   // This method handles the S"Launch Color Builder UI" menu command.
   // Invokes the BuildColor method of the System::Web::UI::Design.ColorBuilder.
   void launchColorBuilder( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      
      // Create a parent control.
      System::Windows::Forms::Control^ c = gcnew System::Windows::Forms::Control;
      c->CreateControl();
      
      // Launch the Color Builder using the specified control
      // parent and an initial HTML format (S"RRGGBB") color String*.
      System::Web::UI::Design::ColorBuilder::BuildColor( this->Component, c, "405599" );
     
   }

};


// Example Web control displays the value of its text property.
// This control is associated with the ColorBuilderDesigner.

[DesignerAttribute(ColorBuilderDesigner::typeid,IDesigner::typeid)]
public ref class ColorBuilderControl: public System::Web::UI::WebControls::WebControl
{
private:
   String^ text;

public:

   property String^ Text 
   {

      [Bindable(true),
      Category("Appearance"),
      DefaultValue("")]
      String^ get()
      {
         return text;
      }

      void set( String^ value )
      {
         text = value;
      }

   }

protected:
   virtual void Render( HtmlTextWriter^ output ) override
   {
      output->Write( Text );
   }

};

// Example designer provides a designer verb menu command to launch the 
// BuildColor method of the ColorBuilder.
[System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.InheritanceDemand, Name="FullTrust")]
[System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")]
public class ColorBuilderDesigner : System.Web.UI.Design.UserControlDesigner
{
    public ColorBuilderDesigner()
    {
    }

    // Provides a designer verb menu command for invoking the BuildColor 
    // method of the ColorBuilder.
    public override System.ComponentModel.Design.DesignerVerbCollection Verbs
    {
        get
        {
            DesignerVerbCollection dvc = new DesignerVerbCollection();                               
            dvc.Add( new DesignerVerb("Launch Color Builder UI", new EventHandler(this.launchColorBuilder)) ); 
            return dvc;
        }
    }

    // This method handles the "Launch Color Builder UI" menu command.
    // Invokes the BuildColor method of the System.Web.UI.Design.ColorBuilder.
    private void launchColorBuilder(object sender, EventArgs e)
    {
        // Create a parent control.
        System.Windows.Forms.Control c = new System.Windows.Forms.Control();            
        c.CreateControl();            
        
        // Launch the Color Builder using the specified control 
        // parent and an initial HTML format ("RRGGBB") color string.
        System.Web.UI.Design.ColorBuilder.BuildColor(this.Component, c, "405599");
    }
}

// Example Web control displays the value of its text property.
// This control is associated with the ColorBuilderDesigner.
[DesignerAttribute(typeof(ColorBuilderDesigner), typeof(IDesigner))]
public class ColorBuilderControl : System.Web.UI.WebControls.WebControl
{
    private string text;

    [Bindable(true),
    Category("Appearance"),
    DefaultValue("")]
    public string Text
    {
        get
        {
            return text;
        }

        set
        {
            text = value;
        }
    }

    protected override void Render(HtmlTextWriter output)
    {
        output.Write(Text);
    }
}

' Example designer provides a designer verb menu command to launch the 
' BuildColor method of the ColorBuilder.
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.InheritanceDemand, Name:="FullTrust" ), _
System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust" )> _
Public Class ColorBuilderDesigner
    Inherits System.Web.UI.Design.UserControlDesigner

    Public Sub New()
    End Sub

    ' Provides a designer verb menu command for invoking the BuildColor 
    ' method of the ColorBuilder.
    Public Overrides ReadOnly Property Verbs() As System.ComponentModel.Design.DesignerVerbCollection
        Get
            Dim dvc As New DesignerVerbCollection()
            dvc.Add(New DesignerVerb("Launch Color Builder UI", New EventHandler(AddressOf Me.launchColorBuilder)))
            Return dvc
        End Get
    End Property

    ' This method handles the "Launch Color Builder UI" menu command.
    ' Invokes the BuildColor method of the System.Web.UI.Design.ColorBuilder.
    Private Sub launchColorBuilder(ByVal sender As Object, ByVal e As EventArgs)

        ' Create a parent control.
        Dim c As New System.Windows.Forms.Control()
        c.CreateControl()

        ' Launch the Color Builder using the specified control 
        ' parent and an initial HTML format ("RRGGBB") color string.
        System.Web.UI.Design.ColorBuilder.BuildColor(Me.Component, c, "405599")
      
    End Sub

End Class

' Example Web control displays the value of its text property.
' This control is associated with the ColorBuilderDesigner.
<DesignerAttribute(GetType(ColorBuilderDesigner), GetType(IDesigner))> _
Public Class ColorBuilderControl
    Inherits System.Web.UI.WebControls.WebControl
    Private [text_] As String

    <Bindable(True), Category("Appearance"), DefaultValue("")> _
    Public Property [Text]() As String
        Get
            Return [text_]
        End Get

        Set(ByVal Value As String)
            [text_] = Value
        End Set
    End Property

    Protected Overrides Sub Render(ByVal output As HtmlTextWriter)
        output.Write([Text])
    End Sub

End Class

Commenti

Il BuildColor metodo avvia un'interfaccia utente per selezionare un valore di colore.

La ColorBuilder classe non è destinata all'uso all'esterno dell'ambiente di progettazione. ColorBuilderrichiede , IWebFormsBuilderUIServiceche in genere è disponibile all'interno di un progetto Web Forms in fase di progettazione. Se si desidera compilare stringhe di colore HTML, è possibile implementare un metodo che converte i valori RGB di un Color oggetto in una stringa di formato RRGGBB compatibile con HTML. Se si intende usare un controllo per selezionare un colore o configurare un colore, è possibile creare un'interfaccia utente per questa operazione oppure usare un PropertyGrid controllo che consente di modificare Color le proprietà con l'impostazione predefinita ColorEditor fornendo un'interfaccia di selezione dei colori.

Metodi

BuildColor(IComponent, Control, String)	Avvia un editor di colori per compilare un valore di proprietà di colore HTML.
Equals(Object)	Determina se l'oggetto specificato è uguale all'oggetto corrente. (Ereditato da Object)
GetHashCode()	Funge da funzione hash predefinita. (Ereditato da Object)
GetType()	Ottiene l'oggetto Type dell'istanza corrente. (Ereditato da Object)
MemberwiseClone()	Crea una copia superficiale dell'oggetto Object corrente. (Ereditato da Object)
ToString()	Restituisce una stringa che rappresenta l'oggetto corrente. (Ereditato da Object)

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