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C#中将时间格式从string转为DateTime
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<p>前言，想在WP7编辑一个twitter API的应用，在获取数据时发现时间格式为：<code>Fri Jul 16 16:58:46 +0000 2010</code>。而且获取格式为string，很难进行处理。<br>Google一下，发现<code>DateTime.ParseExact()</code>这个函数，可以自定来源格式。下面是debug的过程：</p>
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<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">using System.Globalization;</span><br><span class="line">System.Diagnostics.Debug.WriteLine("Debug Message");</span><br><span class="line">System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("en-us");</span><br><span class="line">System.Diagnostics.Debug.WriteLine(DateTime.Now.ToString("ddd MMM dd HH:mm:ss zzz yyyy", System.Threading.Thread.CurrentThread.CurrentCulture));</span><br></pre></td></tr></table></figure>
<p>可以得出系统时间的输出格式，如果不指定culture，会默认显示中文，如果指定en-us，则显示英文。</p>
<p><code>Sat Mar 10 12:48:18 +08:00 2012</code></p>
<p>可见与twitter api的格式在时区里只相差一个冒号，问题就很容易解决，在字符串23个字节中加入冒号，然后再进行转换。</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">string created_at = "Fri Jul 16 16:58:46 +0000 2010";</span><br><span class="line">System.Diagnostics.Debug.WriteLine(DateTime.ParseExact(created_at.Insert(23, ":"), "ddd MMM dd HH:mm:ss zzz yyyy", null));</span><br><span class="line">//输出如下</span><br><span class="line">7/17/2010 12:58:46 AM</span><br></pre></td></tr></table></figure>
<p>折腾了一个晚上。。。。。</p>
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