在DLL中捕获C#中的SOAP

/// <summary>  
/// Programatically registers a <see cref="SoapExtension"/> at runtime with the specified  
/// <see cref="SoapExtensionTypeElement.Priority"/> and <see cref="SoapExtensionTypeElement.Group"/> settings.  
/// </summary>  
/// <param name="type">The <see cref="Type"/> of the <see cref="SoapExtension"/> to register.</param>  
/// <param name="priority">  
/// A value that indicates the relative order in which this SOAP extension runs when multiple SOAP extensions are  
/// specified. Within each group the priority attribute distinguishes the overall relative priority of the SOAP   
/// extension. A lower priority number indicates a higher priority for the SOAP extension. The lowest possible   
/// value for the priority attribute is 1.  
/// </param>  
/// <param name="group">  
/// The relative priority group (e.g. Low or High) in which this SOAP extension runs when multiple SOAP extensions   
/// are configured to run.  
/// </param>  
[ReflectionPermission(SecurityAction.Demand,Unrestricted = true)]  
public static void RegisterSoapExtension(Type type,int priority,PriorityGroup group)  
{  
    if (!type.IsSubclassOf(typeof(SoapExtension)))  
    {  
        throw new ArgumentException("Type must be derived from SoapException.","type");  
    }  

    if (priority < 1)  
    {  
        throw new ArgumentOutOfRangeException("priority",priority,"Priority must be greater or equal to 1.");  
    }  

    // get the current web services settings...  
    WebServicesSection wss = WebServicesSection.Current;  

    // set SoapExtensionTypes collection to read/write...  
    FieldInfo readOnlyField = typeof(System.Configuration.ConfigurationElementCollection).GetField("bReadOnly",BindingFlags.NonPublic | BindingFlags.Instance);  
    readOnlyField.SetValue(wss.SoapExtensionTypes,false);  

    // inject SoapExtension...  
    wss.SoapExtensionTypes.Add(new SoapExtensionTypeElement(type,group));  

    // set SoapExtensionTypes collection back to readonly and clear modified flags...  
    MethodInfo resetModifiedMethod = typeof(System.Configuration.ConfigurationElement).GetMethod("ResetModified",BindingFlags.NonPublic | BindingFlags.Instance);  
    resetModifiedMethod.Invoke(wss.SoapExtensionTypes,null);  
    MethodInfo setReadOnlyMethod = typeof(System.Configuration.ConfigurationElement).GetMethod("SetReadOnly",BindingFlags.NonPublic | BindingFlags.Instance);  
    setReadOnlyMethod.Invoke(wss.SoapExtensionTypes,null);  
}

您需要在实例化客户端/服务器之前调用此方法.

RegisterSoapExtension(typeof(TraceExtension),1,PriorityGroup.Low);
PaypalClient cli = new PaypalClient();