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//-----------------------------------------------------------------------------
// <copyright file="MailAddressCollection.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------------
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<MailAddress> {
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<MailAddress> 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, bool allowUnicode) {
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, allowUnicode);
}
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 += ", " + address.Encode(1, allowUnicode);
}
}
return encodedAddresses;
}
}
}