C# ISurrogateSelector.ChainSelector方法代码示例

 /// <summary>
 /// Adds the specified <see cref="T:System.Runtime.Serialization.ISurrogateSelector"/> that
 /// can handle a particular object type to the list of surrogates.
 /// </summary>
 /// <param name="selector">The surrogate selector to add.</param>
 /// <exception cref="T:System.ArgumentNullException">The
 /// <paramref name="selector"/>parameter is null.</exception>
 /// <exception cref="T:System.Runtime.Serialization.SerializationException">The selector is
 /// already on the list of selectors.</exception>
 /// <exception cref="T:System.Security.SecurityException">The caller does not have the
 /// required permission.</exception>
 public virtual void ChainSelector(ISurrogateSelector selector) {
     if (selector == null)
         throw new ArgumentNullException("Selector is null.");
     if (_nextSelector != null)
         selector.ChainSelector(_nextSelector);
     _nextSelector = selector;
 }

 public virtual void ChainSelector(ISurrogateSelector selector)
 {
     if (selector == null)
     {
         throw new ArgumentNullException("Selector is null.");
     }
     if (this._nextSelector != null)
     {
         selector.ChainSelector(this._nextSelector);
     }
     this._nextSelector = selector;
 }

		public virtual void ChainSelector (ISurrogateSelector selector)
		{
			if (selector == null)
				throw new ArgumentNullException ("Selector is null.");

			// Chain the selector at the beggining of the chain
			// since "The last selector added to the list will be the first one checked"
			// (from MS docs)

			if (nextSelector != null)
				selector.ChainSelector (nextSelector);

			nextSelector = selector;
		}

		public virtual void ChainSelector (ISurrogateSelector selector)
		{
			if (_next != null) selector.ChainSelector (_next);
			_next = selector;
		}

        [System.Security.SecurityCritical]  // auto-generated_required 
        public virtual void ChainSelector(ISurrogateSelector selector) {
            ISurrogateSelector temp; 
            ISurrogateSelector tempCurr;
            ISurrogateSelector tempPrev;
            ISurrogateSelector tempEnd;
 
            if (selector==null) {
                throw new ArgumentNullException("selector"); 
            } 
            Contract.EndContractBlock();
 
            //
            // Verify that we don't try and add ourself twice.
            //
            if (selector==this) { 
                throw new SerializationException(Environment.GetResourceString("Serialization_DuplicateSelector"));
            } 
 
            //
            // Verify that the argument doesn't contain a cycle. 
            //
            if (!HasCycle(selector)) {
                throw new ArgumentException(Environment.GetResourceString("Serialization_SurrogateCycleInArgument"), "selector");
            } 

            // 
            // Check for a cycle that would lead back to this.  We find the end of the list that we're being asked to 
            // insert for use later.
            // 
            tempCurr = selector.GetNextSelector();
            tempEnd = selector;
            while (tempCurr!=null && tempCurr!=this) {
                tempEnd = tempCurr; 
                tempCurr = tempCurr.GetNextSelector();
            } 
            if (tempCurr==this) { 
                throw new ArgumentException(Environment.GetResourceString("Serialization_SurrogateCycle"), "selector");
            } 

            //
            // Check for a cycle later in the list which would be introduced by this insertion.
            // 
            tempCurr = selector;
            tempPrev = selector; 
            while(tempCurr!=null) { 
                if (tempCurr==tempEnd) {
                    tempCurr = this.GetNextSelector(); 
                } else {
                    tempCurr = tempCurr.GetNextSelector();
                }
                if (tempCurr==null) { 
                    break;
                } 
                if (tempCurr==tempPrev) { 
                    throw new ArgumentException(Environment.GetResourceString("Serialization_SurrogateCycle"), "selector");
                } 

                if (tempCurr==tempEnd) {
                    tempCurr = this.GetNextSelector();
                } else { 
                    tempCurr = tempCurr.GetNextSelector();
                } 
 

                if (tempPrev==tempEnd) { 
                    tempPrev = this.GetNextSelector();
                } else {
                    tempPrev = tempPrev.GetNextSelector();
                } 
                if (tempCurr==tempPrev) {
                    throw new ArgumentException(Environment.GetResourceString("Serialization_SurrogateCycle"), "selector"); 
                } 
            }
 
            //
            // Add the new selector and it's entire chain of selectors as the next thing that
            // we check.
            // 
            temp = m_nextSelector;
            m_nextSelector = selector; 
            if (temp!=null) { 
                tempEnd.ChainSelector(temp);
            } 
        }