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Add Method
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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
)

Parameters

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.
                customErrorsCollection.Add(newCustomError2);
                configuration.Save();
            }

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0
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