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ProcessHost.SetApplicationPreloadState Method (String, String, Boolean)

.NET Framework (current version)

This API supports the product infrastructure and is not intended to be used directly from your code.

Notifies ASP.NET that a particular application that is running on IIS 7.0 is configured to be preloaded.

Namespace:   System.Web.Hosting
Assembly:  System.Web (in System.Web.dll)

public void SetApplicationPreloadState(
	string context,
	string appId,
	bool enabled


Type: System.String

The application context.

Type: System.String

The unique ID of the application.

Type: System.Boolean

true to indicate the application should be preloaded; otherwise, false.

Exception Condition

The IApplicationPreloadUtil instance that contains information for preloading the application is null or empty.


appId is null or empty.


enabled is set to true and the process host was not previously passed an IApplicationPreloadUtil interface to its SetApplicationPreloadUtil method

This method implements the SetApplicationPreloadState method of the IApplicationPreloadManager interface. IIS 7.0 calls the SetApplicationPreloadState method to notify ASP.NET whether the application that is being loaded supports preloading.


This method applies only to applications that run on IIS 7.0.

.NET Framework
Available since 4.0
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