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            <p class="a4" style="MARGIN-LEFT: 0cm"><span lang="EN-US">P</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span style="FONT-FAMILY: 宋体">数字类型</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span style="FONT-FAMILY: 宋体">百分比计数法</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span lang="EN-US">432,000.00%</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span lang="EN-US">X</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span style="FONT-FAMILY: 宋体">只用于整数类型</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span lang="EN-US">16</span><span style="FONT-FAMILY: 宋体">进制格式</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span lang="EN-US">1120 (</span><span style="FONT-FAMILY: 宋体">如果要显示</span><span lang="EN-US">0x1120</span><span style="FONT-FAMILY: 宋体">，需要写上</span><span lang="EN-US">0x)</span></p>
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<p class="MsoNormal" style="TEXT-ALIGN: left" align="left"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal" style="LINE-HEIGHT: 15pt"><span style="FONT-FAMILY: 宋体">如果要在整数上添加前导</span><span lang="EN-US">0</span><span style="FONT-FAMILY: 宋体">，可以使用格式说明符</span><span lang="EN-US">0</span><span style="FONT-FAMILY: 宋体">重复指定所需的次数。例如，格式说明符</span><span lang="EN-US">0000</span><span style="FONT-FAMILY: 宋体">会把</span><span lang="EN-US">3</span><span style="FONT-FAMILY: 宋体">显示为</span><span lang="EN-US">0003</span><span style="FONT-FAMILY: 宋体">，</span><span lang="EN-US">99</span><span style="FONT-FAMILY: 宋体">显示为</span><span lang="EN-US">0099</span><span style="FONT-FAMILY: 宋体">。</span></p>
<p class="MsoBodyTextIndent"><span style="FONT-FAMILY: 宋体">这里不能给出完整的列表，因为其他数据类型有自己的格式说明符。本节的主要目的是说明如何为自己的类定义格式说明符。</span></p>
<h4 style="FTEL: 21.45pt"><span lang="EN-US">1. </span><span style="FONT-FAMILY: 黑体">字符串的格式化</span></h4>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">作为如何格式化字符串的一个示例，看看执行下面的语句会得到什么结果：</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">Console.WriteLine(&quot;The double is {0,10:E} and the int contains {1}&quot;, d, i);</span></p>
<p class="MsoNormal"><span lang="EN-US">Console.WriteLine()</span><span style="FONT-FAMILY: 宋体">只是把参数的完整列表传送给静态方法</span><span lang="EN-US">String.Format()</span><span style="FONT-FAMILY: 宋体">，如果要在字符串中以其他方式格式化这些值，例如显示在一个文本框中，也可以调用这个方法。带有</span><span lang="EN-US">3</span><span style="FONT-FAMILY: 宋体">个参数的</span><span lang="EN-US">WriteLine()</span><span style="FONT-FAMILY: 宋体">重载方法的执行方式如下：</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><a ftel="Format1"><span lang="EN-US">// Likely implementation of Console.WriteLine()</span></a></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">public void WriteLine(string format, object arg0, object arg1)</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">&nbsp;&nbsp; Console.WriteLine(string.Format(format, arg0, arg1));</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">上面的代码依次调用了带有</span><span lang="EN-US">1</span><span style="FONT-FAMILY: 宋体">个参数的重载方法</span><span lang="EN-US">WriteLine()</span><span style="FONT-FAMILY: 宋体">，仅显示了传递过来的字符串的内容，没有对它进行进一步的格式化。</span></p>
<p class="MsoNormal"><span lang="EN-US">String.Format()</span><span style="FONT-FAMILY: 宋体">现在需要用对应对象的合适字符串表示来替换每个格式说明符，构造最终的字符串。但是，如前所述，对于这个建立字符串的过程，需要</span><span lang="EN-US">StringBuilder</span><span style="FONT-FAMILY: 宋体">实例，而不是字符串实例。在这个示例中，</span><span lang="EN-US">StringBuilder</span><span style="FONT-FAMILY: 宋体">实例是用字符串的第一部分</span><span lang="EN-US">(</span><span style="FONT-FAMILY: 宋体">即文本&ldquo;</span><span lang="EN-US">The double is</span><span style="FONT-FAMILY: 宋体">&rdquo;</span><span lang="EN-US">)</span><span style="FONT-FAMILY: 宋体">创建和初始化的。然后调用</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">StringBuilder.AppendFormat()</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">方法，传递第一个格式说明符&ldquo;</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">{0,10:E}</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">&rdquo;</span><span style="FONT-FAMILY: 宋体">和相应的对象</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">double</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">，把这个对象的字符串表示添加到构造好的字符串中，这个过程会继续重复调用</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">StringBuilder.Append()</span><span lang="EN-US"> </span><span style="FONT-FAMILY: 宋体">和</span> <span lang="EN-US" style="LETTER-SPACING: -0.1pt">StringBuilder.AppendFormat()</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">方法，直到得到了全部格式化好的字符串为止。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">下面的内容比较有趣。因为</span><span lang="EN-US">StringBuilder.AppendFormat()</span><span style="FONT-FAMILY: 宋体">需要指出如何格式化对象，所以它做的第一件事是检查对象，确定它是否执行</span><span lang="EN-US">System</span><span style="FONT-FAMILY: 宋体">命名空间中的接口</span><span lang="EN-US">IFormattable</span><span style="FONT-FAMILY: 宋体">。试着把这个对象转换为接口，会发现转换很容易成功，或者使用</span><span lang="EN-US">C#</span><span style="FONT-FAMILY: 宋体">关键字</span><span lang="EN-US">is</span><span style="FONT-FAMILY: 宋体">，也能实现此转换。如果转换失败，</span><span lang="EN-US">AppendFormat()</span><span style="FONT-FAMILY: 宋体">只会调用对象的</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">方法，其中所有的对象都继承了</span><span lang="EN-US">System.Object</span><span style="FONT-FAMILY: 宋体">或被重写。在前面给出的编写各种类和结构的示例中，执行过程都是这样，因为我们编写的类都没有执行这个接口。这就是在前面的章节中，</span><span lang="EN-US">Object.ToString()</span><span style="FONT-FAMILY: 宋体">的重写方法允许<span style="LETTER-SPACING: -0.1pt">在</span></span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">Console.WriteLine()</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">语句中显示类和结构如</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">Vector</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">的原因</span><span style="FONT-FAMILY: 宋体">。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">但是，所有预定义的基本数字类型都执行这个接口，对于这些类型，特别是这个示例中的</span><span lang="EN-US">double</span><span style="FONT-FAMILY: 宋体">和</span><span lang="EN-US">int</span><span style="FONT-FAMILY: 宋体">，就不会调用继承了</span><span lang="EN-US">System.Object</span><span style="FONT-FAMILY: 宋体">的基本</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">方法。为了理解这个过程，需要了解</span><span lang="EN-US">IFormattable</span><span style="FONT-FAMILY: 宋体">接口。</span></p>
<p class="MsoNormal"><span lang="EN-US">IFormattable</span><span style="FONT-FAMILY: 宋体">只定义了一个方法，该方法也叫作</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">，它带有两个参数，这与</span><span lang="EN-US">System. Object</span><span style="FONT-FAMILY: 宋体">版本的</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">不同，它不带参数。下面是</span><span lang="EN-US">IFormattable</span><span style="FONT-FAMILY: 宋体">的定义：</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">interface IFormattable</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">&nbsp;&nbsp; string ToString(string format, IFormatProvider formatProvider);</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">这个</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">重载方法的第一个参数是一个字符串，它指定要求的格式。换言之，它是字符串的说明符部分，放在字符串的｛｝中，该参数最初传递给</span><span lang="EN-US">Console.WriteLine()</span><span style="FONT-FAMILY: 宋体">或</span><span lang="EN-US"> String. Format()</span><span style="FONT-FAMILY: 宋体">。例如，在本例中，最初的语句如下：</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">Console.WriteLine(&quot;The double is {0,10:E} and the int contains {1}&quot;, d, i);</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">在计算第一个说明符</span><span lang="EN-US">{0,10:E}</span><span style="FONT-FAMILY: 宋体">时，在</span><span lang="EN-US">double</span><span style="FONT-FAMILY: 宋体">变量</span><span lang="EN-US">d</span><span style="FONT-FAMILY: 宋体">上调用这个重载方法，传递给它的第一个参数是</span><span lang="EN-US">&quot;E&quot;</span><span style="FONT-FAMILY: 宋体">。</span><span lang="EN-US">StringBuilder.AppendFormat()</span><span style="FONT-FAMILY: 宋体">传递的总是显示在原始字符串的合适格式说明符内冒号后面的文本。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">本书不讨论</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">ToString()</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">的第</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">2</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">个参数，它是执行接口</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">IFormatProvider</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">的对象引用。这个接口提供了</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">ToString()</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">在格式化对象时需要考虑的更多信息</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -1pt">&mdash;&mdash;</span><span style="LETTER-SPACING: -1pt"> </span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">一般包括文化背景信息</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">(.NET</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">文化背景类似于</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">Windows</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">的背景，如果格式化货币或日期，就需要这些信息</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">)</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">。如果直接从源代码中调用这个</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">ToString()</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">重载方法，就需要提供这样一个对象。但</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">StringBuilder.AppendFormat()</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">为这个参数传递一个空值。如果</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">formatProvider</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">为空，</span><span lang="EN-US" style="LETTER-SPACING: -0.1pt">ToString()</span><span style="FONT-FAMILY: 宋体; LETTER-SPACING: -0.1pt">就要使用系统设置中指定的文化背景信息。</span></p>
<p class="MsoNormal"><a ftel="AppendFormat2"><span style="FONT-FAMILY: 宋体">现在回过头来看看本例。第一个要格式化的项目是</span><span lang="EN-US">double</span></a><span style="FONT-FAMILY: 宋体">，对此要求使用指数计数法，格式说明符为</span><span lang="EN-US">E</span><span style="FONT-FAMILY: 宋体">。如前所述，</span><span lang="EN-US">StringBuilder.AppendFormat()</span><span style="FONT-FAMILY: 宋体">方法会建立执行</span><span lang="EN-US">IFormattable</span><span style="FONT-FAMILY: 宋体">接口的对象</span><span lang="EN-US">double</span><span style="FONT-FAMILY: 宋体">，因此要调用带有两个参数的</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">重载方法，其第一个参数是字符串&ldquo;</span><span lang="EN-US">E</span><span style="FONT-FAMILY: 宋体">&rdquo;。第二个参数为空。现在</span><span lang="EN-US">double</span><span style="FONT-FAMILY: 宋体">的这个方法在执行时，会考虑要求的格式和当前的文化背景，以合适的格式返回</span><span lang="EN-US">double</span><span style="FONT-FAMILY: 宋体">的字符串表示。</span><span lang="EN-US">StringBuilder.AppendFormat()</span><span style="FONT-FAMILY: 宋体">则按照需要在返回的字符串中添加前导空格，使之共有</span><span lang="EN-US">10</span><span style="FONT-FAMILY: 宋体">个字符。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">下一个要格式化的对象是</span><span lang="EN-US">int</span><span style="FONT-FAMILY: 宋体">，它不需要任何特殊的格式</span><span lang="EN-US"> (</span><span style="FONT-FAMILY: 宋体">格式说明符是</span><span lang="EN-US">{1})</span><span style="FONT-FAMILY: 宋体">。由于没有格式要求，</span><span lang="EN-US">StringBuilder.AppendFormat()</span><span style="FONT-FAMILY: 宋体">会给该格式字符串传递一个空引用，并适当地响应带有两个参数的</span><span lang="EN-US">int.ToString()</span><span style="FONT-FAMILY: 宋体">重载方法，由于没有特殊的格式要求，所以也可以调用不带参数的</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">方法。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">整个过程如图</span><span lang="EN-US">8-2</span><span style="FONT-FAMILY: 宋体">所示。</span></p>
<p align="center"><span lang="EN-US"><img height="264" src="08/image002.gif" width="300" alt="" /></span></p>
<p style="FTEL: .0001pt" align="center"><span style="FONT-FAMILY: 宋体">图</span><span lang="EN-US">&nbsp; 8-2</span></p>
<h4 style="FTEL: 21.45pt"><span lang="EN-US">2. FormattableVector</span><span style="FONT-FAMILY: 黑体">示例</span></h4>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">前面介绍了如何构造格式字符串，下面扩展本书前面的</span><span lang="EN-US">Vector</span><span style="FONT-FAMILY: 宋体">示例，以多种方式格式化矢量。这个示例的代码可以从</span><span lang="EN-US">www.wrox.com</span><span style="FONT-FAMILY: 宋体">上下载。只要理解了所涉及到的规则，实际上编写代码就相当简单了。我们只需要实现</span><span lang="EN-US">IFormattable</span><span style="FONT-FAMILY: 宋体">，提供由该接口定义的</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">重载方法</span><span lang="EN-US">&nbsp;&nbsp; </span><span style="FONT-FAMILY: 宋体">即可。</span></p>
<p class="MsoNormal" style="TEXT-ALIGN: left" align="left"><span style="FONT-FAMILY: 宋体">要提供的格式说明符如下：</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-US">●<span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><span lang="EN-US">N </span><span style="FONT-FAMILY: 宋体">应解释为一个请求，以提供一个数字，即矢量的模，它是其成员的平方和，在数学上等于</span><span lang="EN-US">Vector</span><span style="FONT-FAMILY: 宋体">的长度的平方，通常放在两个竖杠的中间：</span><span lang="EN-US">||34.5||</span><span style="FONT-FAMILY: 宋体">。</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-US">●<span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><span lang="EN-US">VE </span><span style="FONT-FAMILY: 宋体">应解释为以科学计数法显示每个成员的一个请求，就像说明符</span><span lang="EN-US">E</span><span style="FONT-FAMILY: 宋体">应用于</span><span lang="EN-US">double</span><span style="FONT-FAMILY: 宋体">，就可以表示为</span><span lang="EN-US"> (2.3E+01, 4.5E+02, 1.0E+00)</span><span style="FONT-FAMILY: 宋体">。</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-US">●<span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><span lang="EN-US">IJK</span><span style="FONT-FAMILY: 宋体">应解释为以格式</span><span lang="EN-US">23i + 450j + 1k</span><span style="FONT-FAMILY: 宋体">显示矢量的一个请求。</span><span lang="EN-US"> </span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-US">●<span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><span style="FONT-FAMILY: 宋体">其他内容应仅返回</span><span lang="EN-US">Vector</span><span style="FONT-FAMILY: 宋体">的默认表示方法</span><span lang="EN-US"> (23, 450, 1.0)</span><span style="FONT-FAMILY: 宋体">。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">为了简单起见，我们不以</span><span lang="EN-US">IJK</span><span style="FONT-FAMILY: 宋体">和科学计数法的格式执行任何选项以显示矢量，而是以不区分大小写的方式来测试说明符，允许使用</span><span lang="EN-US">ijk</span><span style="FONT-FAMILY: 宋体">和</span><span lang="EN-US">IJK</span><span style="FONT-FAMILY: 宋体">。注意，使用什么字符串表示格式说明符完全取决于用户。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">为此，首先修改</span><span lang="EN-US">Vector</span><span style="FONT-FAMILY: 宋体">的声明，使之执行</span><span lang="EN-US">IFormattable</span><span style="FONT-FAMILY: 宋体">：</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">struct Vector : IFormattable</span></p>
<p class="a6" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">{</span></p>
<p class="a6" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp; public double x, y, z;</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">下面添加带有</span><span lang="EN-US">2</span><span style="FONT-FAMILY: 宋体">个参数的</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">重载的实现：</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">public string ToString(string format, IFormatProvider formatProvider)</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">&nbsp;&nbsp; if (format == null)</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return ToString();</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp; string formatUpper = format.ToUpper();</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp; switch (formatUpper)</span></p>