Programatically register SoapExtensions
When I want to use a SoapExtension in order to enhance my Web Service's or Web Service client's capabilities - do I always have to put the configuration in a config file? Isn't there a way to do this (perhaps temporarily) programmatically? Yep, there is. You can get your hands on System.Web.Services.Configuration.WebServicesConfiguration in your own code by using reflection. Take a look at the follwing snippet which injects a specific SoapExtension into the pipeline. Note that there must be a known type TraceExtension present in this context:
static void InjectTraceExtensionToConfig()
{
Assembly assBase;
Type webServiceConfig;
object currentProp;
PropertyInfo propInfo;
object[] value;
Type myType;
object[] objArray;
object myObj;
FieldInfo myField;
try
{
assBase = typeof(SoapExtensionAttribute).Assembly;
webServiceConfig = assBase.GetType
("System.Web.Services.Configuration.WebServicesConfiguration");
if (webServiceConfig == null)
throw new Exception("Error ...");
currentProp = webServiceConfig.GetProperty("Current").
GetValue(null, null);
propInfo = webServiceConfig.GetProperty("SoapExtensionTypes");
value = (object[])propInfo.GetValue(currentProp, null);
myType = value.GetType().GetElementType();
objArray = (object[])Array.
CreateInstance(myType, (int)value.Length + 1);
Array.Copy(value, objArray, (int)value.Length);
myObj = Activator.CreateInstance(myType);
myField = myType.GetField("Type");
myField.SetValue(myObj, typeof(TraceExtension));
objArray[(int)objArray.Length - 1] = myObj;
propInfo.SetValue(currentProp, objArray, null);
}
catch (Exception ex)
{}
}