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<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> System.Windows.Forms.TreeViewEventArgs e)</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">{</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> ClearTextFields();</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> //get CultureInfo object from tree</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> CultureInfo ci = (CultureInfo)e.Node.Tag;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> textName.Text = ci.Name;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> textNativeName.Text = ci. NativeName;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> textEnglishName.Text = ci. EnglishName;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> </span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US"> checkIsNeutral.Checked = ci. IsNeutralChecked;</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">然后获取文化的日历信息。</span><span lang="EN-US">CultureInfo</span><span style="FONT-FAMILY: 宋体">类的</span><span lang="EN-US">Calendar</span><span style="FONT-FAMILY: 宋体">属性返回特定文化的默认</span><span lang="EN-US">Calendar</span><span style="FONT-FAMILY: 宋体">对象。因为</span><span lang="EN-US">Calendar</span><span style="FONT-FAMILY: 宋体">类没有名称属性，所以需要使用基类的</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">方法获取类的名称，并删除这个字符串的命名空间，最后在文本字段</span><span lang="EN-US">textCalendar</span><span style="FONT-FAMILY: 宋体">中显示它。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">一种文化可能支持多种日历，所以</span><span lang="EN-US">OptionalCalendars</span><span style="FONT-FAMILY: 宋体">属性返回额外支持的</span><span lang="EN-US">Calendar</span><span style="FONT-FAMILY: 宋体">对象数组。这些可选的日历显示在列表框</span><span lang="EN-US">listCalendars</span><span style="FONT-FAMILY: 宋体">中。派生于</span><span lang="EN-US">Calendar</span><span style="FONT-FAMILY: 宋体">的</span><span lang="EN-US">GregorianCalendar</span><span style="FONT-FAMILY: 宋体">类还有一个</span><span lang="EN-US">CalendarType</span><span style="FONT-FAMILY: 宋体">属性，它列出了</span><span lang="EN-US">Gregorian</span><span style="FONT-FAMILY: 宋体">日历的类型。这个类型可以是枚举</span><span lang="EN-US">GregorianCalendarTypes</span><span style="FONT-FAMILY: 宋体">中的一个值：</span><span lang="EN-US">Arabic</span><span style="FONT-FAMILY: 宋体">、</span><span lang="EN-US">MiddleEastFrench</span><span style="FONT-FAMILY: 宋体">、</span><span lang="EN-US">TransliteratedFrench</span><span style="FONT-FAMILY: 宋体">、</span><span lang="EN-US">USEnglish</span><span style="FONT-FAMILY: 宋体">或</span><span lang="EN-US">Localized</span><span style="FONT-FAMILY: 宋体">，这取决于文化。使用</span><span lang="EN-US">Gregorian</span><span style="FONT-FAMILY: 宋体">日历，类型还可以显示在列表框中。</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">//default calendar</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">textCalendar.Text = ci.Calendar.ToString().Remove(0,21);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">//fill optional calendars</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">listCalendars.Items.Clear();</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">foreach (Calendar optCal in ci.OptionalCalendars)</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">{</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> string calName = optCal.ToString().Remove(0,21);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> //for GregorianCalendar add type information</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> if (optCal is System.Globalization.GregorianCalendar)</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> {</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> GregorianCalendar gregCal = optCal as GregorianCalendar;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> calName += " " + gregCal.CalendarType.ToString();</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> }</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> listCalendars.Items.Add(calName);</span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">}</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">接着在</span><span lang="EN-US">if</span><span style="FONT-FAMILY: 宋体">语句中使用</span><span lang="EN-US">!ci.IsNeutralCulture</span><span style="FONT-FAMILY: 宋体">，检查文化是否为特定文化</span><span lang="EN-US">(</span><span style="FONT-FAMILY: 宋体">不是中立文化</span><span lang="EN-US">)</span><span style="FONT-FAMILY: 宋体">。使用方法</span><span lang="EN-US">ShowSamples()</span><span style="FONT-FAMILY: 宋体">显示数字和日期示例。这个方法将在下一步执行。使用方法</span><span lang="EN-US">ShowRegionInformation()</span><span style="FONT-FAMILY: 宋体">显示区域的一些信息。对于不变的文化，只能显示数字和日期示例，不能显示区域信息。不变的文件与实际的语言无关，所以与区域也无关。</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 27.65pt"><span lang="EN-US">//display number and date samples</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 27.65pt"><span lang="EN-US">if(!ci.IsNeutralCulture)</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 27.65pt"><span lang="EN-US">{</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> groupSamples.Enabled = true;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> ShowSamples(ci);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> //invariant culture doesn't have a region</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> if (ci.ThreeLetterISOLanguageName = "IVL")</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> {</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> groupRegionInformation.Enabled = false;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> }</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> else</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> {</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> groupRegionInformation.Enabled = true;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> ShowRegionInformation(ci.LCID);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> }</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 27.65pt"><span lang="EN-US">}</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 27.65pt"><span lang="EN-US">else // neutral culture: no region, no number/date formatting</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 27.65pt"><span lang="EN-US">{</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> groupSamples.Enabled = false;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> groupRegionInformation.Enabled = false;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 27.65pt"><span lang="EN-US">}</span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">}</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">为了显示一些本地的数字和日期，把选中的</span><span lang="EN-US">CultureInfo</span><span style="FONT-FAMILY: 宋体">类型的对象传送给</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">方法的</span><span lang="EN-US">IFormatProvider</span><span style="FONT-FAMILY: 宋体">参数。</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">private void ShowSamples(CultureInfo ci)</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">{</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> double number = 9876543.21;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> textSampleNumber.Text = number.ToString("N", ci);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> DateTime today = DateTime.Today;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> textSampleDate.Text = today.ToString("D", ci);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> DateTime now = DateTime.Now;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> textSampleTime.Text = now.ToString("T", ci);</span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">}</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">为了显示与</span><span lang="EN-US">RegionInfo</span><span style="FONT-FAMILY: 宋体">对象相关的信息，通过在方法</span><span lang="EN-US">ShowRegionInformation()</span><span style="FONT-FAMILY: 宋体">中传送选中的文化标识符，构造一个</span><span lang="EN-US">RegionInfo</span><span style="FONT-FAMILY: 宋体">对象，然后访问属性</span><span lang="EN-US">DisplayName</span><span style="FONT-FAMILY: 宋体">、</span><span lang="EN-US">CurrencySymbol</span><span style="FONT-FAMILY: 宋体">、</span><span lang="EN-US">ISOCurrencySymbol</span><span style="FONT-FAMILY: 宋体">和</span><span lang="EN-US">IsMetric</span><span style="FONT-FAMILY: 宋体">，显示这些信息。</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">private void ShowRegionInformation(int culture)</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">{</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> RegionInfo ri = new RegionInfo(culture);</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> textRegionName.Text = ri.DisplayName;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> textCurrency.Text = ri.CurrencySymbol;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> textCurrencyName.Text = ri.ISOCurrencySymbol;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US"> checkIsMetric.Checked = ri. IsMetric;</span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">}</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">启动应用程序，在树形视图中就会看到所有的文化，选择一个文化后，就会列出该文化的特性，如图</span><span lang="EN-US">17-7</span><span style="FONT-FAMILY: 宋体">所示。</span></p>
<p align="center"><span lang="EN-US"><img height="283" src="17/image007.jpg" width="276" alt="" /></span></p>
<p style="FTEL: .0001pt" align="center"><span style="FONT-FAMILY: 宋体">图</span><span lang="EN-US"> 17-7</span></p></div>
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<h1 id="divCurrentNode2" style="color: #b83507; width: 100%; text-align: left; font-size: 12px; padding-left: 2px">当前章节:<a href='100165490.htm'><font color='red'>17.1.3 使用文化</font></a></h1>
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<div style='float:left;width:49%'>·<a href='100165487.htm'>17.1 System.Globalization命名空间</a></div><div style='float:right;width:49%'>·<a href='100165488.htm'>17.1.1 Unicode问题</a></div><div style='float:left;width:49%'>·<a href='100165489.htm'>17.1.2 文化和区域</a></div><div style='float:right;width:49%'>·<a href='100165491.htm'>17.1.4 排序</a></div><div style='float:left;width:49%'>·<a href='100165492.htm'>17.2 资源</a></div><div style='float:right;width:49%'>·<a href='100165493.htm'>17.2.1 创建资源文件</a></div></div>
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