blocks|key|3358029|text|这是我想出来的。在C#中，看起来您需要创建一个新的DateTime，并将纪元值'seconds‘添加到此DateTime中。下面是它在代码中的样子：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3358030|new+System.DateTime(1970,+1,+1,+0,+0,+0,+0).AddSeconds(1221818565);|code-block|syntax|javascript|3358031|在使用Visual+Studio即时窗口时，我将此操作的结果打印到调试器控制台：|3358032|{9/19/2008+10:02:45+AM}
++++Date:+{9/19/2008+12:00:00+AM}
++++Day:+19
++++DayOfWeek:+Friday
++++DayOfYear:+263
++++Hour:+10
++++Kind:+Unspecified
++++Millisecond:+0
++++Minute:+2
++++Month:+9
++++Second:+45
++++Ticks:+633574153650000000
++++TimeOfDay:+{10:02:45}
++++Year:+2008|3358033|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Here's what I've come up with. In C#, it looks like you need to create a new DateTime and add the epoch value as 'seconds' to this DateTime. Here's what it looks like in code:

<pre><code>new System.DateTime(1970, 1, 1, 0, 0, 0, 0).AddSeconds(1221818565);
</code></pre>

When using the Visual Studio immediate window, I printed the result of this operation to the debugger console:

<pre><code>{9/19/2008 10:02:45 AM}
 Date: {9/19/2008 12:00:00 AM}
 Day: 19
 DayOfWeek: Friday
 DayOfYear: 263
 Hour: 10
 Kind: Unspecified
 Millisecond: 0
 Minute: 2
 Month: 9
 Second: 45
 Ticks: 633574153650000000
 TimeOfDay: {10:02:45}
 Year: 2008
</code></pre>

blocks|key|3145348|text|您需要的内容如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3145349|DateTime+unixEpoch+=+new+DateTime(1970,+1,+1,+0,+0,+0,+0,+DateTimeKind.Utc);
DateTime+dotnetTime+=+unixEpoch.AddSeconds(Convert.ToDouble(ticks));|code-block|syntax|javascript|3145350|其中ticks是由PHP传递给您的值。|offset|length|style|CODE|3145351|entityMap^0|0|0|2|5|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

What you want is the following:

<pre><code>DateTime unixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
DateTime dotnetTime = unixEpoch.AddSeconds(Convert.ToDouble(ticks));
</code></pre>

where <code>ticks</code> is the value passed to you by PHP.

blocks|key|3145361|text|完成你发布的内容，并将其设置为私密，对我来说似乎很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3145362|[DataContract]
public+class+TestClass
{

++++private+static+readonly+DateTime+unixEpoch+=+new+DateTime(1970,+1,+1,+0,+0,+0,+0,+DateTimeKind.Utc);

++++[IgnoreDataMember]
++++public+DateTime+MyDateTime+{+get;+set;+}

++++[DataMember(Name+=+"MyDateTime")]
++++private+int+MyDateTimeTicks
++++{
++++++++get+{+return+(int)(this.MyDateTime+-+unixEpoch).TotalSeconds;+}
++++++++set+{+this.MyDateTime+=+unixEpoch.AddSeconds(Convert.ToInt32(value));+}
++++}

}|code-block|syntax|javascript|3145363|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|$]]

Finishing what you posted, AND making it private seemed to work fine for me.

<pre><code>[DataContract]
public class TestClass
{

 private static readonly DateTime unixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);

 [IgnoreDataMember]
 public DateTime MyDateTime { get; set; }

 [DataMember(Name = "MyDateTime")]
 private int MyDateTimeTicks
 {
 get { return (int)(this.MyDateTime - unixEpoch).TotalSeconds; }
 set { this.MyDateTime = unixEpoch.AddSeconds(Convert.ToInt32(value)); }
 }

}
</code></pre>

blocks|key|3145376|text|我知道你的问题是针对PHP的，但我只想指出.NET+JSON的一个“问题”：看起来.NET给你的日期是“从纪元开始的毫秒数”(而不是秒)。在本例中，AddSeconds行应该是：unixEpoch.AddMilliseconds(Int64.Parse(date));|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3145377|更多信息：http://blogs.msdn.com/b/marcelolr/archive/2008/03/05/system-datetime-ticks-vs-json-date.aspx|3145378|entityMap|0|LINK|mutability|MUTABLE|url|http://blogs.msdn.com/b/marcelolr/archive/2008/03/05/system-datetime-ticks-vs-json-date.aspx^0|2H|19|0|5|2K|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@]|D|@$9|T|A|U|1|V]]|E|$]]|$1|H|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

I know your question was for PHP, but I just wanted to note a "gotcha" for .NET JSON: it appears that .NET gives you the date in "milliseconds since epoch" (as opposed to seconds). In this case, the AddSeconds line should be:
<code>unixEpoch.AddMilliseconds(Int64.Parse(date));</code>

More info: <a href="http://blogs.msdn.com/b/marcelolr/archive/2008/03/05/system-datetime-ticks-vs-json-date.aspx" rel="nofollow">http://blogs.msdn.com/b/marcelolr/archive/2008/03/05/system-datetime-ticks-vs-json-date.aspx</a>

blocks|key|3145380|text|private+DateTime+ConvertJsonStringToDateTime(string+jsonTime)
++++++++{
++++++++++++if+(!string.IsNullOrEmpty(jsonTime)+&&+jsonTime.IndexOf("Date")+>+-1)
++++++++++++{
++++++++++++++++string+milis+=+jsonTime.Substring(jsonTime.IndexOf("(")+%2B+1);
++++++++++++++++string+sign+=+milis.IndexOf("%2B")+>+-1+?+"%2B"+:+"-";
++++++++++++++++string+hours+=+milis.Substring(milis.IndexOf(sign));
++++++++++++++++milis+=+milis.Substring(0,+milis.IndexOf(sign));
++++++++++++++++hours+=+hours.Substring(0,+hours.IndexOf(")"));
++++++++++++++++return+new+DateTime(1970,+1,+1,+0,+0,+0,+0,+DateTimeKind.Utc).AddMilliseconds(Convert.ToInt64(milis)).AddHours(Convert.ToInt64(hours)+/+100);+++++++++++++++++
++++++++++++}

++++++++++++return+DateTime.Now;
++++++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3145381|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>private DateTime ConvertJsonStringToDateTime(string jsonTime)
 {
 if (!string.IsNullOrEmpty(jsonTime) &amp;&amp; jsonTime.IndexOf("Date") &gt; -1)
 {
 string milis = jsonTime.Substring(jsonTime.IndexOf("(") + 1);
 string sign = milis.IndexOf("+") &gt; -1 ? "+" : "-";
 string hours = milis.Substring(milis.IndexOf(sign));
 milis = milis.Substring(0, milis.IndexOf(sign));
 hours = hours.Substring(0, hours.IndexOf(")"));
 return new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds(Convert.ToInt64(milis)).AddHours(Convert.ToInt64(hours) / 100); 
 }

 return DateTime.Now;
 }
</code></pre>

<blockquote>
 Possible Duplicate: 
 <a href="https://stackoverflow.com/questions/249760/how-to-convert-unix-timestamp-to-datetime-and-vice-versa">How to convert UNIX timestamp to DateTime and vice versa?</a> 
</blockquote>



I've got the following class:

<pre><code>[DataContractAttribute]
public class TestClass
{
 [DataMemberAttribute]
 public DateTime MyDateTime { get; set; }
}
</code></pre>

Here's the JSON:

<pre><code>{ "MyDateTime":"1221818565" }
</code></pre>

The JSON is being returned from a PHP webservice.

What I need to do, is convert that epoch string into a valid C# DateTime. What's the best way of doing this?

I can do this:

<pre><code>[IgnoreDataMemberAttribute]
public DateTime MyDateTime { get; set; }

[DataMemberAttribute(Name = "MyDateTime")]
public Int32 MyDateTimeTicks
{
 get { return this.MyDateTime.Convert(...); }
 set { this.Created = new DateTime(...); }
}
</code></pre>

But the trouble with this is, the MyDateTimeTicks is public (changing it to private causes an exception in the serialization process)

How to convert DateTime from JSON to C#?

Visual Studio

调试器

JSON

 可能重复：我有如下的类：[DataContractAttribute]public class TestClass{  [DataMemberAttribute]  public DateTime MyDateTime { get; set; }}下面是JSON：{ "MyDateTime":"1221818565"...

问如何将JSON格式的DateTime转换成C#格式？
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