SecureCreateInstance() static private méthode

static private SecureCreateInstance ( Type type ) : object
type System.Type
Résultat object
SecurityUtils Class Documentation
Exemple #1
0
        // Create an object of the given type. Throw an exception if this fails.
        private static object CreateInstanceOfType(Type type)
        {
            object    instancedObject   = null;
            Exception instanceException = null;

            try {
                instancedObject = SecurityUtils.SecureCreateInstance(type);
            }
            catch (TargetInvocationException ex) {
                instanceException = ex; // Default ctor threw an exception
            }
            catch (MethodAccessException ex) {
                instanceException = ex; // Default ctor was not public
            }
            catch (MissingMethodException ex) {
                instanceException = ex; // No default ctor defined
            }

            if (instanceException != null)
            {
                throw new NotSupportedException(SR.GetString(SR.BindingSourceInstanceError), instanceException);
            }

            return(instancedObject);
        }
Exemple #2
0
        /// <include file='doc\FeatureSupport.uex' path='docs/doc[@for="FeatureSupport.GetVersionPresent"]/*' />
        /// <devdoc>
        ///    <para>Gets the version of the specified feature that is available on the system.</para>
        /// </devdoc>
        public static Version GetVersionPresent(string featureClassName, string featureConstName)
        {
            object          featureId      = null;
            IFeatureSupport featureSupport = null;

            //APPCOMPAT: If Type.GetType() throws, we want to return
            //null to preserve Everett behavior.
            Type c = null;

            try {
                c = Type.GetType(featureClassName);
            }
            catch (ArgumentException) {}

            if (c != null)
            {
                FieldInfo fi = c.GetField(featureConstName);

                if (fi != null)
                {
                    featureId = fi.GetValue(null);
                }
            }

            if (featureId != null)
            {
                featureSupport = (IFeatureSupport)SecurityUtils.SecureCreateInstance(c);

                if (featureSupport != null)
                {
                    return(featureSupport.GetVersionPresent(featureId));
                }
            }
            return(null);
        }