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CustomErrorCollection.Add Method

Adds a CustomError object to the collection.

Namespace:  System.Web.Configuration
Assembly:  System.Web (in System.Web.dll)
public void Add(
	CustomError customError


Type: System.Web.Configuration.CustomError

The CustomError object to add already exists in the collection or the collection is read only.

Before adding a custom error to the collection, you must create a CustomError error object and initialize the Redirect and StatusCode properties.

The following code example adds a CustomError object to the CustomErrorCollection collection.

Refer to the code example in the CustomErrorCollection class topic to learn how to get the collection.

            // Using the Add method.
            CustomError newCustomError2 =
            new CustomError(404, "customerror404.htm");

            // Update the configuration file. 
            if (!customErrorsSection.SectionInformation.IsLocked)
                // Add the new custom error to the collection.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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