AspNetCompatibilityRequirementsMode Enumeration

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

Member nameDescription
Allowed

WCF services can run in an application domain with ASP.NET compatibility mode set to true or false.

NotAllowed

WCF services must run in an application domain with ASP.NET compatibility mode set to false.

Required

WCF 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 Allowed behavior by default. For more information, see <serviceHostingEnvironment>.

Service developers can ensure that their service is only run in ASP.NET Compatibility Mode by setting the AspNetCompatibilityRequirementsMode property on the AspNetCompatibilityRequirementsAttribute to Required 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;
    }
}

.NET Framework
Available since 3.0
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