ConnectionsZoneDesigner Class
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Provides design-time support for ConnectionsZone controls.
public ref class ConnectionsZoneDesigner : System::Web::UI::Design::WebControls::WebParts::ToolZoneDesignerpublic class ConnectionsZoneDesigner : System.Web.UI.Design.WebControls.WebParts.ToolZoneDesignertype ConnectionsZoneDesigner = class
inherit ToolZoneDesignerPublic Class ConnectionsZoneDesigner
Inherits ToolZoneDesigner- Inheritance
-
ConnectionsZoneDesigner
Examples
The following code example shows how to hide additional properties from a custom ConnectionsZone control by overriding the PreFilterProperties method.
using System;
using System.Security.Permissions;
using System.Web;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.Design.WebControls.WebParts;
using System.ComponentModel;
using System.Collections;
/// <summary>
/// ConnectionsZoneSample provides a blank inheritance of
/// the ConnectionsZone class for the purpose of attaching
/// a custom designer.
/// ConnectionsZoneSampleDesigner shows how to edit the
/// PreFilterProperties() method to hide a specific property
/// at design time.
/// </summary>
namespace Samples.AspNet.CS.Controls
{
[AspNetHostingPermission(SecurityAction.Demand,
Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand,
Level = AspNetHostingPermissionLevel.Minimal)]
[Designer(typeof(ConnectionsZoneSampleDesigner))]
public class ConnectionsZoneSample : ConnectionsZone {}
public class ConnectionsZoneSampleDesigner : ConnectionsZoneDesigner
{
// Here is the property we will hide.
string propertyToHide = "BackColor";
protected override void PreFilterProperties(IDictionary properties)
{
// Invoke the base method. This will hide those properties
// specified in ConnectionsZoneDesigner.
base.PreFilterProperties(properties);
// Set attributes to remove it from the property grid and any editors.
Attribute[] newAttributes = new Attribute[]
{ new BrowsableAttribute(false),
new EditorBrowsableAttribute(EditorBrowsableState.Never)};
PropertyDescriptor property = (PropertyDescriptor)properties[propertyToHide];
if (property != null)
{
// Re-create the property with the attributes specified above.
properties[propertyToHide] = TypeDescriptor.CreateProperty(property.ComponentType, property, newAttributes);
}
}
}
}
Imports System.Security.Permissions
Imports System.Web
Imports System.Web.UI.WebControls.WebParts
Imports System.Web.UI.Design.WebControls.WebParts
Imports System.ComponentModel
Imports System.Collections
' ConnectionsZoneSample provides a blank inheritance of
' the ConnectionsZone class for the purpose of attaching
' a custom designer.
' ConnectionsZoneSampleDesigner shows how to edit the
' PreFilterProperties() method to hide a specific property
' at design time.
Namespace Samples.AspNet.VB.Controls
<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
<AspNetHostingPermission(SecurityAction.InheritanceDemand, Level:=AspNetHostingPermissionLevel.Minimal)> _
<Designer(GetType(ConnectionsZoneSampleDesigner))> _
Public Class ConnectionsZoneSample
Inherits ConnectionsZone
End Class
Public Class ConnectionsZoneSampleDesigner
Inherits ConnectionsZoneDesigner
' Here is the property we will hide.
Private propertyToHide As String = "BackColor"
Protected Overrides Sub PreFilterProperties(properties As IDictionary)
' Invoke the base method. This will hide those properties
' specified in ConnectionsZoneDesigner.
MyBase.PreFilterProperties(properties)
' Set attributes to remove it from the property grid and any editors.
Dim newAttributes As Attribute() = New Attribute() {New BrowsableAttribute(False), New EditorBrowsableAttribute(EditorBrowsableState.Never)}
Dim [property] As PropertyDescriptor = DirectCast(properties(propertyToHide), PropertyDescriptor)
If [property] IsNot Nothing Then
' Re-create the property with the attributes specified above.
properties(propertyToHide) = TypeDescriptor.CreateProperty([property].ComponentType, [property], newAttributes)
End If
End Sub
End Class
End Namespace
Remarks
ConnectionsZoneDesigner provides a design-time representation of a ConnectionsZone control with a menu to access the AutoFormats collection and the ViewInBrowseMode property for the convenience of the page developer. It is the only zone designer that does not support designer regions. This is because ConnectionsZone controls uses links to create connections instead of a drag-and-drop user interface (UI).
The AutoFormats collection and the ViewInBrowseMode property both appear on the verbs menu of the ConnectionsZone control. AutoFormats, when selected, provides a selection of color schemes. The ViewInBrowseMode check box, when selected, displays the contents of the control as it would appear in the browser; the control will be empty until a connection is made.
You can inherit from ConnectionsZoneDesigner to support a custom ConnectionsZone control as with any other control designer. You can override the GetDesignTimeHtml method to change the markup that renders the control. You can also override the AutoFormats collection to add a DesignerAutoFormatCollection with a custom scheme.
Constructors
| ConnectionsZoneDesigner() |
Initializes a new instance of the ConnectionsZoneDesigner class. |
Properties
| ActionLists |
Gets the action list collection for the zone designer. (Inherited from ToolZoneDesigner) |
| AllowResize |
Gets a value indicating whether the control can be resized in the design-time environment. (Inherited from ControlDesigner) |
| AssociatedComponents |
Gets the collection of components associated with the component managed by the designer. (Inherited from ComponentDesigner) |
| AutoFormats |
Gets the collection of predefined automatic formatting schemes to display in the Auto Format dialog box for the associated control at design time. |
| Behavior |
Obsolete.
Gets or sets the DHTML behavior that is associated with the designer. (Inherited from HtmlControlDesigner) |
| Component |
Gets the component this designer is designing. (Inherited from ComponentDesigner) |
| DataBindings |
Gets the data bindings collection for the current control. (Inherited from HtmlControlDesigner) |
| DataBindingsEnabled |
Gets a value indicating whether data binding is supported by the containing region for the associated control. (Inherited from ControlDesigner) |
| DesignerState |
Gets an object that is used to persist data for the associated control at design time. (Inherited from ControlDesigner) |
| DesignTimeElement |
Obsolete.
Gets the design-time object representing the control that is associated with the HtmlControlDesigner object on the design surface. (Inherited from HtmlControlDesigner) |
| DesignTimeElementView |
Obsolete.
Gets the view-control object for the control designer. (Inherited from ControlDesigner) |
| DesignTimeHtmlRequiresLoadComplete |
Obsolete.
Gets a value indicating whether the design host must finish loading before the GetDesignTimeHtml method can be called. (Inherited from ControlDesigner) |
| Expressions |
Gets the expression bindings for the current control at design time. (Inherited from HtmlControlDesigner) |
| HidePropertiesInTemplateMode |
Gets a value indicating whether the properties of the associated control are hidden when the control is in template mode. (Inherited from ControlDesigner) |
| ID |
Gets or sets the ID string for the control. (Inherited from ControlDesigner) |
| InheritanceAttribute |
Gets an attribute that indicates the type of inheritance of the associated component. (Inherited from ComponentDesigner) |
| Inherited |
Gets a value indicating whether this component is inherited. (Inherited from ComponentDesigner) |
| InTemplateMode |
Gets a value indicating whether the control is in either template viewing or editing mode in the design host. The InTemplateMode property is read-only. (Inherited from ControlDesigner) |
| IsDirty |
Obsolete.
Gets or sets a value indicating whether the Web server control has been marked as changed. (Inherited from ControlDesigner) |
| ParentComponent |
Gets the parent component for this designer. (Inherited from ComponentDesigner) |
| ReadOnly |
Obsolete.
Gets or sets a value indicating whether the properties of the control are read-only at design time. (Inherited from ControlDesigner) |
| RootDesigner |
Gets the control designer for the Web Forms page that contains the associated control. (Inherited from ControlDesigner) |
| SetTextualDefaultProperty | (Inherited from ComponentDesigner) |
| ShadowProperties |
Gets a collection of property values that override user settings. (Inherited from ComponentDesigner) |
| ShouldCodeSerialize |
Obsolete.
Gets or sets a value indicating whether to create a field declaration for the control in the code-behind file for the current design document during serialization. (Inherited from HtmlControlDesigner) |
| Tag |
Gets an object representing the HTML markup element for the associated control. (Inherited from ControlDesigner) |
| TemplateGroups |
Gets a collection of template groups, each containing one or more template definitions. (Inherited from ControlDesigner) |
| UsePreviewControl |
Gets a value indicating whether the designer should use a temporary copy rather than the actual control associated with the designer to generate the design-time markup. (Inherited from WebZoneDesigner) |
| Verbs |
Gets the design-time verbs supported by the component that is associated with the designer. (Inherited from ComponentDesigner) |
| ViewControl |
Gets or sets a Web server control that can be used for previewing the design-time HTML markup. (Inherited from ControlDesigner) |
| ViewControlCreated |
Gets or sets a value indicating whether a |
| ViewInBrowseMode |
Gets or sets a value indicating whether the Web Parts zone is displayed when the user is in the browse display mode. (Inherited from ToolZoneDesigner) |
| Visible |
Gets a value that indicates whether the control is visible at design time. (Inherited from ControlDesigner) |
Methods
| CreateErrorDesignTimeHtml(String, Exception) |
Creates the HTML markup to display a specified exception error message at design time. (Inherited from ControlDesigner) |
| CreateErrorDesignTimeHtml(String) |
Creates HTML markup to display a specified error message at design time. (Inherited from ControlDesigner) |
| CreatePlaceHolderDesignTimeHtml() |
Provides a simple rectangular placeholder representation that displays the type and ID of the control. (Inherited from ControlDesigner) |
| CreatePlaceHolderDesignTimeHtml(String) |
Provides a simple rectangular placeholder representation that displays the type and ID of the control, and also additional specified instructions or information. (Inherited from ControlDesigner) |
| CreateViewControl() |
Returns a copy of the associated control for viewing or rendering on the design surface. (Inherited from ControlDesigner) |
| Dispose() |
Releases all resources used by the ComponentDesigner. (Inherited from ComponentDesigner) |
| Dispose(Boolean) |
Releases the unmanaged resources that are used by the HtmlControlDesigner object and optionally releases the managed resources. (Inherited from HtmlControlDesigner) |
| DoDefaultAction() |
Creates a method signature in the source code file for the default event on the component and navigates the user's cursor to that location. (Inherited from ComponentDesigner) |
| Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
| GetBounds() |
Retrieves the coordinates of the rectangle representing the boundaries for the control as displayed on the design surface. (Inherited from ControlDesigner) |
| GetDesignTimeHtml() |
Gets the markup that is used to represent the control at design time. |
| GetDesignTimeHtml(DesignerRegionCollection) |
Retrieves the HTML markup to display the control and populates the collection with the current control designer regions. (Inherited from ControlDesigner) |
| GetEditableDesignerRegionContent(EditableDesignerRegion) |
Returns the content for an editable region of the design-time view of the associated control. (Inherited from ControlDesigner) |
| GetEmptyDesignTimeHtml() |
Retrieves the HTML markup to represent a Web server control at design time that will have no visual representation at run time. (Inherited from ControlDesigner) |
| GetErrorDesignTimeHtml(Exception) |
Retrieves the HTML markup that provides information about the specified exception. (Inherited from ControlDesigner) |
| GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
| GetPersistenceContent() |
Retrieves the persistable inner HTML markup of the control at design time. (Inherited from ControlDesigner) |
| GetPersistInnerHtml() |
Obsolete.
Retrieves the persistable inner HTML markup of the control. (Inherited from ControlDesigner) |
| GetService(Type) |
Attempts to retrieve the specified type of service from the design mode site of the designer's component. (Inherited from ComponentDesigner) |
| GetType() |
Gets the Type of the current instance. (Inherited from Object) |
| GetViewRendering() |
Retrieves an object that contains the design-time markup for the content and regions of the associated control. (Inherited from ControlDesigner) |
| Initialize(IComponent) |
Binds the designer to the specified ConnectionsZone control. |
| InitializeExistingComponent(IDictionary) |
Reinitializes an existing component. (Inherited from ComponentDesigner) |
| InitializeNewComponent(IDictionary) |
Initializes a newly created component. (Inherited from ComponentDesigner) |
| InitializeNonDefault() |
Obsolete.
Obsolete.
Initializes the settings for an imported component that is already initialized to settings other than the defaults. (Inherited from ComponentDesigner) |
| Invalidate() |
Invalidates the whole area of the control that is displayed on the design surface and signals the control designer to redraw the control. (Inherited from ControlDesigner) |
| Invalidate(Rectangle) |
Invalidates the specified area of the control that is displayed on the design surface and signals the control designer to redraw the control. (Inherited from ControlDesigner) |
| InvokeGetInheritanceAttribute(ComponentDesigner) |
Gets the InheritanceAttribute of the specified ComponentDesigner. (Inherited from ComponentDesigner) |
| IsPropertyBound(String) |
Obsolete.
Retrieves a value indicating whether the specified property on the associated control is data-bound. (Inherited from ControlDesigner) |
| Localize(IDesignTimeResourceWriter) |
Uses the provided resource writer to persist the localizable properties of the associated control to a resource in the design host. (Inherited from ControlDesigner) |
| MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
| OnAutoFormatApplied(DesignerAutoFormat) |
Called when a predefined, automatic formatting scheme has been applied to the associated control. (Inherited from ControlDesigner) |
| OnBehaviorAttached() |
Called when the control designer is attached to a Behavior object. (Inherited from ControlDesigner) |
| OnBehaviorDetaching() |
Obsolete.
Called when a behavior disassociates from the element. (Inherited from HtmlControlDesigner) |
| OnBindingsCollectionChanged(String) |
Obsolete.
Called when the data-binding collection changes. (Inherited from ControlDesigner) |
| OnClick(DesignerRegionMouseEventArgs) |
Called by the design host when the user clicks the associated control at design time. (Inherited from ControlDesigner) |
| OnComponentChanged(Object, ComponentChangedEventArgs) |
Called when the associated control changes. (Inherited from ControlDesigner) |
| OnComponentChanging(Object, ComponentChangingEventArgs) |
Represents the method that will handle the ComponentChanging event for the associated control. (Inherited from ControlDesigner) |
| OnControlResize() |
Obsolete.
Called when the associated Web server control has been resized in the design host at design time. (Inherited from ControlDesigner) |
| OnPaint(PaintEventArgs) |
Called when the control designer draws the associated control on the design surface, if the CustomPaint value is |
| OnSetComponentDefaults() |
Obsolete.
Obsolete.
Sets the default properties for the component. (Inherited from ComponentDesigner) |
| OnSetParent() |
Provides a way to perform additional processing when the associated control is attached to a parent control. (Inherited from HtmlControlDesigner) |
| PostFilterAttributes(IDictionary) |
Allows a designer to change or remove items from the set of attributes that it exposes through a TypeDescriptor. (Inherited from ComponentDesigner) |
| PostFilterEvents(IDictionary) |
Allows a designer to change or remove items from the set of events that it exposes through a TypeDescriptor. (Inherited from ComponentDesigner) |
| PostFilterProperties(IDictionary) |
Allows a designer to change or remove items from the set of properties that it exposes through a TypeDescriptor. (Inherited from ComponentDesigner) |
| PreFilterAttributes(IDictionary) |
Allows a designer to add to the set of attributes that it exposes through a TypeDescriptor. (Inherited from ComponentDesigner) |
| PreFilterEvents(IDictionary) |
Sets the list of events that are exposed at design-time for the TypeDescriptor object for the component. (Inherited from HtmlControlDesigner) |
| PreFilterProperties(IDictionary) |
Hides a preset group of properties at design time. |
| RaiseComponentChanged(MemberDescriptor, Object, Object) |
Notifies the IComponentChangeService that this component has been changed. (Inherited from ComponentDesigner) |
| RaiseComponentChanging(MemberDescriptor) |
Notifies the IComponentChangeService that this component is about to be changed. (Inherited from ComponentDesigner) |
| RaiseResizeEvent() |
Obsolete.
Raises the OnControlResize() event. (Inherited from ControlDesigner) |
| RegisterClone(Object, Object) |
Registers internal data in a cloned control. (Inherited from ControlDesigner) |
| SetEditableDesignerRegionContent(EditableDesignerRegion, String) |
Specifies the content for an editable region of the control at design time. (Inherited from ControlDesigner) |
| SetRegionContent(EditableDesignerRegion, String) |
Specifies the content for an editable region in the design-time view of the control. (Inherited from ControlDesigner) |
| SetViewFlags(ViewFlags, Boolean) |
Assigns the specified bitwise ViewFlags enumeration to the specified flag value. (Inherited from ControlDesigner) |
| ToString() |
Returns a string that represents the current object. (Inherited from Object) |
| UpdateDesignTimeHtml() |
Refreshes the design-time HTML markup for the associated Web server control by calling the GetDesignTimeHtml method. (Inherited from ControlDesigner) |
