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IDesignerOptionService Interface

Provides access to the designer options located on the Tools menu under the Options command in the Visual Studio .NET development environment.

For a list of all members of this type, see IDesignerOptionService Members.

[Visual Basic]
Public Interface IDesignerOptionService
[C#]
public interface IDesignerOptionService
[C++]
public __gc __interface IDesignerOptionService
[JScript]
public interface IDesignerOptionService

Remarks

IDesignerOptionService provides an interface that can be used to retrieve and update the values of the Windows Forms Designer options, which are listed within the dialog displayed by the Options command of the Tools menu of the Visual Studio .NET development environment. The GetOptionValue method retrieves the value of a specified option. The SetOptionValue method sets a specified value for a specified option.

Example

[Visual Basic, C#, C++] The following code example demonstrates accessing the IDesignerOptionService to display the current values of the standard options.

[Visual Basic] 
Imports System
Imports System.Collections
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Drawing
Imports System.Data
Imports System.Windows.Forms
Imports System.Windows.Forms.Design

' This control demonstrates retrieving the standard 
' designer option service values in design mode.
Public Class IDesignerOptionServiceControl
    Inherits System.Windows.Forms.UserControl
    Private designerOptionService As IDesignerOptionService

    Public Sub New()
        Me.BackColor = Color.Beige
        Me.Size = New Size(404, 135)
    End Sub

    Public Overrides Property Site() As System.ComponentModel.ISite
        Get
            Return MyBase.Site
        End Get
        Set(ByVal Value As System.ComponentModel.ISite)
            MyBase.Site = Value

            ' If siting component, attempt to obtain an IDesignerOptionService.
            If Not (MyBase.Site Is Nothing) Then
                designerOptionService = CType(Me.GetService(GetType(IDesignerOptionService)), IDesignerOptionService)
            End If
        End Set
    End Property

    ' Displays control information and current IDesignerOptionService 
    ' values, if available.
    <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
    Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
        e.Graphics.DrawString("IDesignerOptionServiceControl", New Font("Arial", 9), New SolidBrush(Color.Blue), 4, 4)
        If Me.DesignMode Then
            e.Graphics.DrawString("Currently in design mode", New Font("Arial", 8), New SolidBrush(Color.Black), 4, 18)
        Else
            e.Graphics.DrawString("Not in design mode. Cannot access IDesignerOptionService.", New Font("Arial", 8), New SolidBrush(Color.Red), 4, 18)
        End If
        If Not (MyBase.Site Is Nothing) AndAlso Not (designerOptionService Is Nothing) Then
            e.Graphics.DrawString("IDesignerOptionService provides access to the table of option values listed when", New Font("Arial", 8), New SolidBrush(Color.Black), 4, 38)
            e.Graphics.DrawString("the Windows Forms Designer\General tab of the Tools\Options menu is selected.", New Font("Arial", 8), New SolidBrush(Color.Black), 4, 50)

            e.Graphics.DrawString("Table of standard value names and current values", New Font("Arial", 8), New SolidBrush(Color.Red), 4, 76)

            ' Displays a table of the standard value names and current values.
            Dim ypos As Integer = 90

            ' Obtains and shows the size of the standard design-mode grid square.
            Dim size As Size = CType(designerOptionService.GetOptionValue("WindowsFormsDesigner\General", "GridSize"), Size)
            e.Graphics.DrawString("GridSize", New Font("Arial", 8), New SolidBrush(Color.Black), 4, ypos)
            e.Graphics.DrawString(size.ToString(), New Font("Arial", 8), New SolidBrush(Color.Black), 100, ypos)
            ypos += 12

            ' Obtaisn and shows whether the design mode surface grid is enabled.
            Dim showGrid As Boolean = CBool(designerOptionService.GetOptionValue("WindowsFormsDesigner\General", "ShowGrid"))
            e.Graphics.DrawString("ShowGrid", New Font("Arial", 8), New SolidBrush(Color.Black), 4, ypos)
            e.Graphics.DrawString(showGrid.ToString(), New Font("Arial", 8), New SolidBrush(Color.Black), 100, ypos)
            ypos += 12

            ' Obtains and shows whether components should be aligned with the surface grid.
            Dim snapToGrid As Boolean = CBool(designerOptionService.GetOptionValue("WindowsFormsDesigner\General", "SnapToGrid"))
            e.Graphics.DrawString("SnapToGrid", New Font("Arial", 8), New SolidBrush(Color.Black), 4, ypos)
            e.Graphics.DrawString(snapToGrid.ToString(), New Font("Arial", 8), New SolidBrush(Color.Black), 100, ypos)
        End If
    End Sub

End Class

[C#] 
using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using System.Windows.Forms.Design;

namespace IDesignerOptionServiceExample
{
    // This control demonstrates retrieving the standard 
    // designer option service values in design mode.
    public class IDesignerOptionServiceControl : System.Windows.Forms.UserControl
    {        
        private IDesignerOptionService designerOptionService;

        public IDesignerOptionServiceControl()
        {
            this.BackColor = Color.Beige;
                    this.Size = new Size(404, 135);
        }
        
        public override System.ComponentModel.ISite Site
        {
            get
            {
                return base.Site;
            }
            set
            {
                base.Site = value;

                // If siting component, attempt to obtain an IDesignerOptionService.
                if( base.Site != null )                            
                    designerOptionService = (IDesignerOptionService)this.GetService(typeof(IDesignerOptionService));                                   
            }
        }

        // Displays control information and current IDesignerOptionService 
        // values, if available.
        [System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")] 
        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {
            e.Graphics.DrawString("IDesignerOptionServiceControl", new Font("Arial", 9), new SolidBrush(Color.Blue), 4, 4);
            if( this.DesignMode )
                e.Graphics.DrawString("Currently in design mode", new Font("Arial", 8), new SolidBrush(Color.Black), 4, 18);
            else
                e.Graphics.DrawString("Not in design mode. Cannot access IDesignerOptionService.", new Font("Arial", 8), new SolidBrush(Color.Red), 4, 18);
            
            if( base.Site != null && designerOptionService != null )
            {
                e.Graphics.DrawString("IDesignerOptionService provides access to the table of option values listed when", new Font("Arial", 8), new SolidBrush(Color.Black), 4, 38);
                e.Graphics.DrawString("the Windows Forms Designer\\General tab of the Tools\\Options menu is selected.", new Font("Arial", 8), new SolidBrush(Color.Black), 4, 50);                
                
                e.Graphics.DrawString("Table of standard value names and current values", new Font("Arial", 8), new SolidBrush(Color.Red), 4, 76);
                
                // Displays a table of the standard value names and current values.
                int ypos = 90;

                // Obtains and shows the size of the standard design-mode grid square.
                Size size = (Size)designerOptionService.GetOptionValue("WindowsFormsDesigner\\General", "GridSize");
                e.Graphics.DrawString("GridSize", new Font("Arial", 8), new SolidBrush(Color.Black), 4, ypos);
                e.Graphics.DrawString(size.ToString(), new Font("Arial", 8), new SolidBrush(Color.Black), 100, ypos);
                ypos+=12;
                
                // Obtains and shows whether the design mode surface grid is enabled.
                bool showGrid = (bool)designerOptionService.GetOptionValue("WindowsFormsDesigner\\General", "ShowGrid");
                e.Graphics.DrawString("ShowGrid", new Font("Arial", 8), new SolidBrush(Color.Black), 4, ypos);
                e.Graphics.DrawString(showGrid.ToString(), new Font("Arial", 8), new SolidBrush(Color.Black), 100, ypos);
                ypos+=12;
                
                // Obtains and shows whether components should be aligned with the surface grid.
                bool snapToGrid = (bool)designerOptionService.GetOptionValue("WindowsFormsDesigner\\General", "SnapToGrid");
                e.Graphics.DrawString("SnapToGrid", new Font("Arial", 8), new SolidBrush(Color.Black), 4, ypos);
                e.Graphics.DrawString(snapToGrid.ToString(), new Font("Arial", 8), new SolidBrush(Color.Black), 100, ypos);                
            }
        }
    }
}

[C++] 
#using <mscorlib.dll>
#using <System.Windows.Forms.dll>
#using <System.Data.dll>
#using <System.Drawing.dll>
#using <System.dll>
using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Drawing;
using namespace System::Data;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Design;

namespace IDesignerOptionServiceExample
{
    // This control demonstrates retrieving the standard 
    // designer option service values in design mode.
public __gc class IDesignerOptionServiceControl : public System::Windows::Forms::UserControl
{        
private:
    IDesignerOptionService* designerOptionService;

public:
    IDesignerOptionServiceControl()
    {
        this->BackColor = Color::Beige;
        this->Size = System::Drawing::Size(404, 135);
    }

    __property System::ComponentModel::ISite* get_Site()
    {
        return UserControl::get_Site();
    }
    __property void set_Site( System::ComponentModel::ISite* value )
    {
        UserControl::set_Site( value );

        // If siting component, attempt to obtain an IDesignerOptionService.
        if( UserControl::Site != 0 )                            
            designerOptionService = dynamic_cast<IDesignerOptionService*>(this->GetService(__typeof(IDesignerOptionService)));                                   
    }


    // Displays control information and current IDesignerOptionService 
    // values, if available.
protected:
    [System::Security::Permissions::PermissionSet(System::Security::Permissions::SecurityAction::Demand, Name=S"FullTrust")] 
    void OnPaint(System::Windows::Forms::PaintEventArgs* e)
    {
        e->Graphics->DrawString(S"IDesignerOptionServiceControl", new System::Drawing::Font(S"Arial", 9), new SolidBrush(Color::Blue), 4, 4);
        if( this->DesignMode )
            e->Graphics->DrawString(S"Currently in design mode", new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Black), 4, 18);
        else
            e->Graphics->DrawString(S"Not in design mode. Cannot access IDesignerOptionService.", new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Red), 4, 18);

        if( UserControl::Site != 0 && designerOptionService != 0 )
        {
            e->Graphics->DrawString(S"IDesignerOptionService provides access to the table of option values listed when", new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Black), 4, 38);
            e->Graphics->DrawString(S"the Windows Forms Designer\\General tab of the Tools\\Options menu is selected.", new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Black), 4, 50);                

            e->Graphics->DrawString(S"Table of standard value names and current values", new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Red), 4, 76);

            // Displays a table of the standard value names and current values.
            int ypos = 90;

            // Obtains and shows the size of the standard design-mode grid square.
            System::Drawing::Size size = *dynamic_cast<System::Drawing::Size*>(designerOptionService->GetOptionValue(S"WindowsFormsDesigner\\General", S"GridSize"));
            e->Graphics->DrawString(S"GridSize", new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Black), 4, (float)ypos);
            e->Graphics->DrawString(size.ToString(), new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Black), 100, (float)ypos);
            ypos+=12;

            // Obtains and shows whether the design mode surface grid is enabled.
            bool showGrid = *dynamic_cast<bool __gc *>(designerOptionService->GetOptionValue(S"WindowsFormsDesigner\\General", S"ShowGrid"));
            e->Graphics->DrawString(S"ShowGrid", new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Black), 4, (float)ypos);
            e->Graphics->DrawString(showGrid.ToString(), new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Black), 100, (float)ypos);
            ypos+=12;

            // Obtains and shows whether components should be aligned with the surface grid.
            bool snapToGrid = *dynamic_cast<bool __gc*>(designerOptionService->GetOptionValue(S"WindowsFormsDesigner\\General", S"SnapToGrid"));
            e->Graphics->DrawString(S"SnapToGrid", new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Black), 4, (float)ypos);
            e->Graphics->DrawString(snapToGrid.ToString(), new System::Drawing::Font(S"Arial", 8), new SolidBrush(Color::Black), 100, (float)ypos);                
        }
    }
};
}

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Namespace: System.ComponentModel.Design

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

Assembly: System (in System.dll)

See Also

IDesignerOptionService Members | System.ComponentModel.Design Namespace | IDesigner

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