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DesignerLoader Class


Provides a basic designer loader interface that can be used to implement a custom designer loader.

Namespace:   System.ComponentModel.Design.Serialization
Assembly:  System (in System.dll)


[HostProtectionAttribute(SecurityAction.LinkDemand, SharedState = true)]
[PermissionSetAttribute(SecurityAction.InheritanceDemand, Name = "FullTrust")]
public abstract class DesignerLoader


Initializes a new instance of the DesignerLoader class.


Gets a value indicating whether the loader is currently loading a document.


Begins loading a designer.


Releases all resources used by the DesignerLoader.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Writes cached changes to the location that the designer was loaded from.


Serves as the default hash function. (Inherited from Object.)


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)


Returns a string that represents the current object.(Inherited from Object.)

DesignerLoader can be implemented to support custom loading of a designer and designer components. A designer loader is also responsible for writing changes to an open document back to the storage the loader used when loading the document after the Flush method is called.

By default, the Visual Studio development environment creates its own variety of DesignerLoader that can load basic designer projects. To create a custom designer loader, you must inherit from and implement the abstract DesignerLoader class. You cannot directly instantiate DesignerLoader, as it has no public constructor.

When BeginLoad is invoked, the designer loader loads the design document, displays the designer surface using the IDesignerHost interface, and calls EndLoad on the IDesignerLoaderHost interface when done. The IDesignerLoaderHost implementation is usually the same class that implements IDesignerHost.


for full access to system resources. Demand value: InheritanceDemand. Associated state:

.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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