ColorBuilder Classe

Definizione

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 la selezione di un valore di colore.

La ColorBuilder classe non è destinata all'uso all'esterno dell'ambiente in fase di progettazione. ColorBuilder richiede , IWebFormsBuilderUIServiceche in genere è disponibile all'interno di un progetto Web Form 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 utilizzare un controllo per selezionare un colore o configurare un colore, è possibile creare un'interfaccia utente per questa operazione oppure utilizzare un PropertyGrid controllo che consente di modificare Color le proprietà con l'impostazione predefinita ColorEditor fornendo un'interfaccia di selezione colori.