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AspNetCompatibilityRequirementsMode Enumeration

Specifies whether a Windows Communication Foundation (WCF) service runs, or can run, in a mode that is compatible with ASP.NET.

Namespace: System.ServiceModel.Activation
Assembly: System.ServiceModel (in system.servicemodel.dll)

public enum AspNetCompatibilityRequirementsMode
public enum AspNetCompatibilityRequirementsMode
public enum AspNetCompatibilityRequirementsMode

 Member nameDescription
AllowedWCF services can run in an application domain with ASP.NET compatibility mode set to true or false
NotAllowedWCF services must run in an application domain with ASP.NET compatibility mode set to false.  
RequiredWCF services must run in an application domain with ASP.NET compatibility mode set to true

ASP.NET compatibility mode allows WCF services to use ASP features such as identity impersonation. It is enabled at the application level through the Web.config file and cannot be overridden by Web.config files nested in the application. When the AspNetCompatibilityRequirementsMode value is not specified for a service, it gets NotAllowed behavior by default. For more information, see serviceHostingEnvironment.

Service developers must explicitly opt-in for the ASP.NET compatibility mode when implementing the WCF service by setting the RequirementsMode property on the AspNetCompatibilityRequirementsAttribute as shown in the following example:

[ServiceContract(Namespace="http://Microsoft.ServiceModel.Samples")]
public interface ICalculatorSession
{
    [OperationContract]
    void Clear();
    [OperationContract]
    void AddTo(double n);
    [OperationContract]
    void SubtractFrom(double n);
    [OperationContract]
    void MultiplyBy(double n);
    [OperationContract]
    void DivideBy(double n);
    [OperationContract]
    double Equals();
}

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]
public class CalculatorService : ICalculatorSession
{
    double result
    {   // Store result in AspNet session.
        get
        {
            if (HttpContext.Current.Session["Result"] != null)
                return (double)HttpContext.Current.Session["Result"];
            return 0.0D;
        }
        set
        {
            HttpContext.Current.Session["Result"] = value;
        }
    }

    public void Clear()
    {
        
    }

    public void AddTo(double n)
    {
        result += n;
    }

    public void SubtractFrom(double n)
    {
        result -= n;
    }

    public void MultiplyBy(double n)
    {
        result *= n;
    }

    public void DivideBy(double n)
    {
        result /= n;
    }

    public double Equals()
    {
        return result;
    }
}

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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