blocks|key|365612|text|我用的是DDay.Ical，它是个好东西。能够打开一个ical文件并将其数据放入一个很好的对象模型中。它说的是测试版，但它对我们来说很有效。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|365613|编辑2016年11月|365614|这个库已经被弃用了，但被另一个开发人员作为iCal.NET重新发布。|365615|关于该版本的说明：rianjs.net/2016/07/dday-ical-is-now-ical-net|365616|来源:+GitHub：github.com/rianjs/ical.net|365617|entityMap|0|LINK|mutability|MUTABLE|url|http://sourceforge.net/projects/dday-ical/|1|http://rianjs.net/2016/07/dday-ical-is-now-ical-net|2|https://github.com/rianjs/ical.net^0|4|9|0|0|0|0|9|18|1|0|B|Q|2|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]]|C|$]]|$1|D|3|E|5|6|7|11|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|12|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|13|8|@]|9|@$A|14|B|15|1|16]]|C|$]]|$1|J|3|K|5|6|7|17|8|@]|9|@$A|18|B|19|1|1A]]|C|$]]|$1|L|3|-4|5|6|7|1B|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|S]]|T|$5|O|P|Q|C|$R|U]]|V|$5|O|P|Q|C|$R|W]]]]

I use <a href="http://sourceforge.net/projects/dday-ical/" rel="noreferrer">DDay.Ical</a>, its good stuff.
Has the ability to open up an ical file and get its data in a nice object model. It says beta, but it works great for us.

<h1>Edit Nov 2016</h1>

This library has been deprecated, but was picked up and re-released as iCal.NET by another dev. 

Notes about the release: <a href="http://rianjs.net/2016/07/dday-ical-is-now-ical-net" rel="noreferrer">rianjs.net/2016/07/dday-ical-is-now-ical-net</a>

Source on GitHub: <a href="https://github.com/rianjs/ical.net" rel="noreferrer">github.com/rianjs/ical.net</a>

blocks|key|3163230|text|iCal可能很复杂，所以我建议使用库。DDay是一个很好的免费解决方案。上一次我检查它没有完全支持循环事件，但除此之外，它看起来真的很不错。一定要和几个客户一起测试日历。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3163231|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

iCal can be complicated, so I recommend using a library. DDay is a good free solution. Last I checked it didn't have full support for recurring events, but other than that it looks really nice. Definitely test the calendars with several clients.

blocks|key|3376044|text|查看http://www.codeproject.com/KB/vb/vcalendar.aspx|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3376045|它不会像您要求的那样处理带引号的可打印字段，但是代码的其余部分已经存在，并且可以修改。|3376046|entityMap|0|LINK|mutability|MUTABLE|url|http://www.codeproject.com/KB/vb/vcalendar.aspx^0|2|1B|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

Check out <a href="http://www.codeproject.com/KB/vb/vcalendar.aspx" rel="nofollow noreferrer">http://www.codeproject.com/KB/vb/vcalendar.aspx</a>

It doesn't handle the quoted-printable fields like you asked, but the rest of the code is there and can be modified.

blocks|key|3163303|text|我找到的最简单的方法就是用microformats标记你的超文本标记语言。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3163304|如果你想生成iCalendar文件，那么你可以使用hCalendar+microformat，然后添加一个链接，比如“添加到日历”，它指向：|3163305|[http://feeds.technorati.com/events/[](http://feeds.technorati.com/events/[)+你的网页的完整网址，包括|style|BOLD|3163306|然后Technorati页面解析您的页面，提取hCalendar信息并将iCalendar文件发送到客户端。|3163307|entityMap|0|LINK|mutability|MUTABLE|url|http://microformats.org/|1|http://microformats.org/wiki/hcalendar|2|http://feeds.technorati.com/events/[|3^0|D|C|0|0|P|L|1|0|1|10|25|C|1|10|2|13|10|3|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|F|3|G|5|6|7|16|8|@$A|17|B|18|H|I]|$A|19|B|1A|H|I]]|9|@$A|1B|B|1C|1|1D]|$A|1E|B|1F|1|1G]]|C|$]]|$1|J|3|K|5|6|7|1H|8|@]|9|@]|C|$]]|$1|L|3|-4|5|6|7|1I|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|S]]|T|$5|O|P|Q|C|$R|U]]|V|$5|O|P|Q|C|$R|W]]|X|$5|O|P|Q|C|$R|W]]]]

The easiest way I've found of doing this is to markup your HTML using <a href="http://microformats.org/" rel="noreferrer">microformats</a>. 

If you're looking to generate iCalendar files then you could use the <a href="http://microformats.org/wiki/hcalendar" rel="noreferrer">hCalendar microformat</a> then include a link such as 'Add to Calendar' that points to: 

<a href="http://feeds.technorati.com/events/[" rel="noreferrer">http://feeds.technorati.com/events/[</a> your page's full URL including the http:// ]

The Technorati page then parses your page, extracts the hCalendar info and sends the iCalendar file to the client.

blocks|key|370508|text|根据RFC-2445，注释和描述字段是文本。测试字段的规则是:1文本字段中的一行不能超过75个八位字节。2换行是通过插入CRLF后跟空格来实现的。3有几个字符必须编码，包括\(反斜杠)；(分号)，(逗号)和换行符。使用\(反斜杠)作为分隔符提供\+\；\，\n|type|unstyled|depth|inlineStyleRanges|entityRanges|data|370509|示例:以下是特性值中带有格式化换行符的特性的示例：|370510|+DESCRIPTION:Meeting+to+provide+technical+review+for+"Phoenix"
+++design.\n+Happy+Face+Conference+Room.+Phoenix+design+team
+++MUST+attend+this+meeting.\n+RSVP+to+team+leader.|code-block|syntax|javascript|370511|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

According to RFC-2445, the comment and description fields are TEXT. The rules for a test field are:
[1] A single line in a TEXT field is not to exceed 75 octets.
[2] Wrapping is achieved by inserting a CRLF followed by whitespace.
[3] There are several characters that must be encoded including \ (reverse slash) ; (semicolon) , (comma) and newline. Using a \ (reverse slash) as a delimiter gives \ \; \, \n

Example: The following is an example of the property with formatted
 line breaks in the property value:

<pre><code> DESCRIPTION:Meeting to provide technical review for "Phoenix"
 design.\n Happy Face Conference Room. Phoenix design team
 MUST attend this meeting.\n RSVP to team leader.
</code></pre>

blocks|key|3163378|text|iCal+(ic2.0)和quoted-printable不能一起使用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3163379|Quoted-printable在vCal+(vCal+1.0)中经常用来表示不可打印的字符，例如换行符(=0D=0A)。默认的vCal编码是7位，所以有时需要使用quoted-printable来表示非ASCII码(您可以覆盖默认编码，但不需要符合vCal的通信方理解它)。|3163380|在iCal中，特殊字符使用转义字符表示，例如'\n‘。默认编码是UTF-8，所有符合iCal的各方都必须支持它，这使得在iCal+2.0+(以及vCard+3.0+)中完全不需要quoted-printable。|3163381|您可能需要支持您的客户/利益相关者来阐明需求。在vCal和iCal之间似乎存在混淆。|3163382|entityMap^0|0|4|0|H|4|0|1|4|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|W|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|M|$]]

iCal (ical 2.0) and quoted-printable don't go together.

Quoted-printable is used a lot in vCal (vCal 1.0) to represent non-printable characters, e.g. line-breaks (=0D=0A). The default vCal encoding is 7-bit, so sometimes you need to use quoted-printable to represent non-ASCII characters (you can override the default encoding, but the other vCal-compliant communicating party is not required to understand it.)

In iCal, special characters are represented using escapes, e.g. '\n'. The default encoding is UTF-8, all iCal-compliant parties must support it and that makes quoted-printable completely unnecessary in iCal 2.0 (and vCard 3.0, for that matter).

You may need to back your customer/stakeholder to clarify the requirements. There seems to be confusion between vCal and iCal.

blocks|key|365744|text|我写了一个填充函数来处理这个问题。它基本上是兼容的--唯一的问题是第一行是74个字符，而不是75个字符(+74个字符是为了处理后续行的空格)……|type|unstyled|depth|inlineStyleRanges|entityRanges|data|365745|+Private+Function+RFC2445TextField(ByVal+LongText+As+String)+As+String

+++++LongText+=+LongText.Replace("\",+"\\")
+++++LongText+=+LongText.Replace(";",+"\;")
+++++LongText+=+LongText.Replace(",",+"\,")

+++++Dim+sBuilder+As+New+StringBuilder
+++++Dim+charArray()+As+Char+=+LongText.ToCharArray

+++++For+i+=+1+To+charArray.Length
+++++++++sBuilder.Append(charArray(i+-+1))
+++++++++If+i+Mod+74+=+0+Then+sBuilder.Append(vbCrLf+&+"+")
+++++Next

+++++Return+sBuilder.ToString

+End+Function|code-block|syntax|javascript|365746|我使用它作为我们的ICS提要的摘要和描述。只需在行中添加已经添加了前缀的字段(例如LongText+=+"SUMMARY:Event+Title")。只要你把缓存设置得足够长，这个操作的开销就不会太大。|365747|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I wrote a shim function to handle this. It's mostly compliant--the only hangup is that the first line is 74 characters instead of 75 (the 74 is to handle the space on subsequent lines)...

<pre><code> Private Function RFC2445TextField(ByVal LongText As String) As String

 LongText = LongText.Replace("\", "\\")
 LongText = LongText.Replace(";", "\;")
 LongText = LongText.Replace(",", "\,")

 Dim sBuilder As New StringBuilder
 Dim charArray() As Char = LongText.ToCharArray

 For i = 1 To charArray.Length
 sBuilder.Append(charArray(i - 1))
 If i Mod 74 = 0 Then sBuilder.Append(vbCrLf &amp; " ")
 Next

 Return sBuilder.ToString

 End Function
</code></pre>

I use this for the summary and description on our ICS feed. Just feed the line with the field already prepended (e.g. LongText = "SUMMARY:Event Title"). As long as you set caching decently long, it's not too expensive of an operation.

blocks|key|367621|text|我知道为时已晚，但它可能会帮助其他人。在我的例子中，我编写了以下扩展名为.ics的文本文件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|367622|BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Calendly//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20170509T164109Z
UID:your+id-11273661
DTSTART:20170509T190000Z
DTEND:20170509T191500Z
CLASS:PRIVATE
DESCRIPTION:Event+Name:+15+Minute+Meeting\nDate+&+Time:+03:00pm+-+03:15pm+(
+Eastern+Time+-+US+&+Canada)+on+Tuesday\,+May+9\,+2017\n\nBest+Phone+Number
++To+Reach+You+::+xxxxxxxxx\n\nany+"link":+https://wwww.yahoo.com\n\n
SUMMARY:15+Minute+Meeting
TRANSP:OPAQUE
END:VEVENT
END:VCALENDAR|code-block|syntax|javascript|367623|这对我很管用。|367624|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

i know it is too late, but it may help others. in my case i wrote following text file with .ics extension 

<pre><code>BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Calendly//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20170509T164109Z
UID:your id-11273661
DTSTART:20170509T190000Z
DTEND:20170509T191500Z
CLASS:PRIVATE
DESCRIPTION:Event Name: 15 Minute Meeting\nDate &amp; Time: 03:00pm - 03:15pm (
 Eastern Time - US &amp; Canada) on Tuesday\, May 9\, 2017\n\nBest Phone Number
 To Reach You :: xxxxxxxxx\n\nany "link": https://wwww.yahoo.com\n\n
SUMMARY:15 Minute Meeting
TRANSP:OPAQUE
END:VEVENT
END:VCALENDAR
</code></pre>

it worked for me.

blocks|key|367243|text|我缺少一个自定义时区的示例。下面的代码片段展示了如何在ics中设置时区(并将其发送到asp.net中的浏览器)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|367244|//set+a+couple+of+variables+for+demo+purposes
DateTime+IcsDateStart+=+DateTime.Now.AddDays(2);
DateTime+IcsDateEnd+=+IcsDateStart.AddMinutes(90);
string+IcsSummary+=+"ASP.Net+demo+snippet";
string+IcsLocation+=+"Amsterdam+(Netherlands)";
string+IcsDescription+=+@"This+snippes+show+you+how+to+create+a+calendar+item+file+(.ics)+in+ASP.NET.\nMay+it+be+useful+for+you.";
string+IcsFileName+=+"MyCalendarFile";

//create+a+new+stringbuilder+instance
StringBuilder+sb+=+new+StringBuilder();

//begin+the+calendar+item
sb.AppendLine("BEGIN:VCALENDAR");
sb.AppendLine("VERSION:2.0");
sb.AppendLine("PRODID:stackoverflow.com");
sb.AppendLine("CALSCALE:GREGORIAN");
sb.AppendLine("METHOD:PUBLISH");

//create+a+custom+time+zone+if+needed,+TZID+to+be+used+in+the+event+itself
sb.AppendLine("BEGIN:VTIMEZONE");
sb.AppendLine("TZID:Europe/Amsterdam");
sb.AppendLine("BEGIN:STANDARD");
sb.AppendLine("TZOFFSETTO:%2B0100");
sb.AppendLine("TZOFFSETFROM:%2B0100");
sb.AppendLine("END:STANDARD");
sb.AppendLine("END:VTIMEZONE");

//add+the+event
sb.AppendLine("BEGIN:VEVENT");

//with+a+time+zone+specified
sb.AppendLine("DTSTART;TZID=Europe/Amsterdam:"+%2B+IcsDateStart.ToString("yyyyMMddTHHmm00"));
sb.AppendLine("DTEND;TZID=Europe/Amsterdam:"+%2B+IcsDateEnd.ToString("yyyyMMddTHHmm00"));

//or+without+a+time+zone
//sb.AppendLine("DTSTART:"+%2B+IcsDateStart.ToString("yyyyMMddTHHmm00"));
//sb.AppendLine("DTEND:"+%2B+IcsDateEnd.ToString("yyyyMMddTHHmm00"));

//contents+of+the+calendar+item
sb.AppendLine("SUMMARY:"+%2B+IcsSummary+%2B+"");
sb.AppendLine("LOCATION:"+%2B+IcsLocation+%2B+"");
sb.AppendLine("DESCRIPTION:"+%2B+IcsDescription+%2B+"");
sb.AppendLine("PRIORITY:3");
sb.AppendLine("END:VEVENT");

//close+calendar+item
sb.AppendLine("END:VCALENDAR");

//create+a+string+from+the+stringbuilder
string+CalendarItemAsString+=+sb.ToString();

//send+the+ics+file+to+the+browser
Response.ClearHeaders();
Response.Clear();
Response.Buffer+=+true;
Response.ContentType+=+"text/calendar";
Response.AddHeader("content-length",+CalendarItemAsString.Length.ToString());
Response.AddHeader("content-disposition",+"attachment;+filename=\""+%2B+IcsFileName+%2B+".ics\"");
Response.Write(CalendarItemAsString);
Response.Flush();
HttpContext.Current.ApplicationInstance.CompleteRequest();|code-block|syntax|javascript|367245|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I'm missing an example with custom time zones. So here a snippet that show how you can set a time zone in the ics (and send it to the browser in asp.net).

<pre><code>//set a couple of variables for demo purposes
DateTime IcsDateStart = DateTime.Now.AddDays(2);
DateTime IcsDateEnd = IcsDateStart.AddMinutes(90);
string IcsSummary = "ASP.Net demo snippet";
string IcsLocation = "Amsterdam (Netherlands)";
string IcsDescription = @"This snippes show you how to create a calendar item file (.ics) in ASP.NET.\nMay it be useful for you.";
string IcsFileName = "MyCalendarFile";

//create a new stringbuilder instance
StringBuilder sb = new StringBuilder();

//begin the calendar item
sb.AppendLine("BEGIN:VCALENDAR");
sb.AppendLine("VERSION:2.0");
sb.AppendLine("PRODID:stackoverflow.com");
sb.AppendLine("CALSCALE:GREGORIAN");
sb.AppendLine("METHOD:PUBLISH");

//create a custom time zone if needed, TZID to be used in the event itself
sb.AppendLine("BEGIN:VTIMEZONE");
sb.AppendLine("TZID:Europe/Amsterdam");
sb.AppendLine("BEGIN:STANDARD");
sb.AppendLine("TZOFFSETTO:+0100");
sb.AppendLine("TZOFFSETFROM:+0100");
sb.AppendLine("END:STANDARD");
sb.AppendLine("END:VTIMEZONE");

//add the event
sb.AppendLine("BEGIN:VEVENT");

//with a time zone specified
sb.AppendLine("DTSTART;TZID=Europe/Amsterdam:" + IcsDateStart.ToString("yyyyMMddTHHmm00"));
sb.AppendLine("DTEND;TZID=Europe/Amsterdam:" + IcsDateEnd.ToString("yyyyMMddTHHmm00"));

//or without a time zone
//sb.AppendLine("DTSTART:" + IcsDateStart.ToString("yyyyMMddTHHmm00"));
//sb.AppendLine("DTEND:" + IcsDateEnd.ToString("yyyyMMddTHHmm00"));

//contents of the calendar item
sb.AppendLine("SUMMARY:" + IcsSummary + "");
sb.AppendLine("LOCATION:" + IcsLocation + "");
sb.AppendLine("DESCRIPTION:" + IcsDescription + "");
sb.AppendLine("PRIORITY:3");
sb.AppendLine("END:VEVENT");

//close calendar item
sb.AppendLine("END:VCALENDAR");

//create a string from the stringbuilder
string CalendarItemAsString = sb.ToString();

//send the ics file to the browser
Response.ClearHeaders();
Response.Clear();
Response.Buffer = true;
Response.ContentType = "text/calendar";
Response.AddHeader("content-length", CalendarItemAsString.Length.ToString());
Response.AddHeader("content-disposition", "attachment; filename=\"" + IcsFileName + ".ics\"");
Response.Write(CalendarItemAsString);
Response.Flush();
HttpContext.Current.ApplicationInstance.CompleteRequest();
</code></pre>

I'm looking for a good method of generating an iCalendar file (*.ics) in c# (asp.net). I've found a couple resources, but one thing that has been lacking is their support for quoted-printable fields - fields that have carriage returns and line feeds.

For example, if the description field isn't encoded properly, only the first line will display and possibly corrupting the rest of the information in the *.ics file.

I'm looking for existing classes that can generate *.ics files and/or a class that can generate quoted-printable fields.

Creating iCal Files in c#

GitHub

我正在寻找一种在c# (asp.net)中生成iCalendar文件(*.ics)的好方法。我找到了一些资源，但缺少的一点是它们对quoted-printable字段的支持-有回车和换行符的字段。例如，如果description字段编码不正确，则只显示第一行，可能会破坏*.ics文件中的其余信息。我正在寻找可以生成*....

问在c#中创建iCal文件
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