MailAddressCollection.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Net / System / Net / Mail / MailAddressCollection.cs / 1305376 / MailAddressCollection.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Net.Mail 
{ 
    using System;
    using System.Collections; 
    using System.Collections.Generic;
    using System.Collections.ObjectModel;
    using System.Text;
    using System.Net.Mime; 

    public class MailAddressCollection: Collection { 
        public MailAddressCollection(){ 
        }
 
        public void Add(string addresses) {
            if (addresses == null) {
                throw new ArgumentNullException("addresses");
            } 
            if (addresses == string.Empty) {
                throw new ArgumentException(SR.GetString(SR.net_emptystringcall, "addresses"), "addresses"); 
            } 

            ParseValue(addresses); 
        }

        protected override void SetItem(int index, MailAddress item){
              if(item==null) { 
                  throw new ArgumentNullException("item");
              } 
 
              base.SetItem(index,item);
        } 

        protected override void InsertItem(int index, MailAddress item){
              if(item==null){
                   throw new ArgumentNullException("item"); 
              }
 
              base.InsertItem(index,item); 
        }
 
        internal void ParseValue(string addresses){
            IList result = MailAddressParser.ParseMultipleAddresses(addresses);

            for (int i = 0; i < result.Count; i++) { 
                this.Add(result[i]);
            } 
        } 

        public override string ToString(){ 
            bool first = true;
            StringBuilder builder = new StringBuilder();

            foreach (MailAddress address in this) { 
                if (!first) {
                    builder.Append(", "); 
                } 

                builder.Append(address.ToString()); 
                first = false;
            }

            return builder.ToString();; 
        }
 
        internal string Encode(int charsConsumed) { 
            string encodedAddresses = string.Empty;
 
            //encode each address individually (except the first), fold and separate with a comma
            foreach (MailAddress address in this) {
                if (String.IsNullOrEmpty(encodedAddresses)) {
                    //no need to append a comma to the first one because it may be the only one. 
                    encodedAddresses = address.Encode(charsConsumed);
                } 
                else { 
                    //appending another one, append a comma to separate and then fold and add the encoded address
                    //the charsConsumed will be 1 because only the first line needs to account for the header itself for 
                    //line length; subsequent lines have a single whitespace character because they are folded here
                    encodedAddresses += ",\r\n " + address.Encode(1);
                }
            } 
            return encodedAddresses;
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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