100165354.htm

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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">AppendFormat()</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">添加特定格式的字符串</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">Insert()</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">在当前字符串中插入一个子字符串</span></p>
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            <td style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 9.9pt; PADDING-LEFT: 9.9pt; PADDING-BOTTOM: 0cm; WIDTH: 106.3pt; BORDER-TOP-STYLE: none; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT-STYLE: none" valign="top" width="142">
            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">Remove()</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">从当前字符串中删除字符</span></p>
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            <td style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 9.9pt; PADDING-LEFT: 9.9pt; PADDING-BOTTOM: 0cm; WIDTH: 106.3pt; BORDER-TOP-STYLE: none; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT-STYLE: none" valign="top" width="142">
            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">Replace()</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">在当前字符串中，用另一个字符替换某个字符，或者用当前字符串中的另一个子字符串替换某个字符串</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">ToString()</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-FAMILY: 宋体">把当前字符串转换为</span><span lang="EN-US">System.String</span><span style="FONT-FAMILY: 宋体">对象</span><span lang="EN-US">(</span><span style="FONT-FAMILY: 宋体">在</span><span lang="EN-US">System.Object</span><span style="FONT-FAMILY: 宋体">中被重写</span><span lang="EN-US">)</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"><span style="FONT-FAMILY: 宋体">其中一些方法还有几种格式的重载方法。</span></p>
<p class="a3" style="MARGIN-TOP: 8.15pt; FTEL: 21.45pt"><span style="FONT-FAMILY: 黑体">注意：</span></p>
<p class="a1" style="FTEL: 21.45pt"><span lang="EN-US">AppendFormat()</span><span style="FONT-FAMILY: 楷体_GB2312">实际上会在调用</span><span lang="EN-US">Console.WriteLine()</span><span style="FONT-FAMILY: 楷体_GB2312">时调用，它负责确定所有像</span><span lang="EN-US">{0:D}</span><span style="FONT-FAMILY: 楷体_GB2312">的格式化表达式应使用什么表达式替代。下一节讨论这个问题。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">不能把</span><span lang="EN-US">StringBuilder</span><span style="FONT-FAMILY: 宋体">转换为</span><span lang="EN-US">String(</span><span style="FONT-FAMILY: 宋体">隐式转换和显式转换都不行</span><span lang="EN-US">)</span><span style="FONT-FAMILY: 宋体">。如果要把</span><span lang="EN-US">StringBuilder</span><span style="FONT-FAMILY: 宋体">的内容输出为</span><span lang="EN-US">String</span><span style="FONT-FAMILY: 宋体">，惟一的方式是使用</span><span lang="EN-US">ToString()</span><span style="FONT-FAMILY: 宋体">方法。</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='100165354.htm'><font color='red'>8.1.1  创建字符串</font></a></h1>
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                        <div style='float:left;width:49%'>·<a href='100165351.htm'>7.3.2  使用指针优化性能</a></div><div style='float:right;width:49%'>·<a href='100165352.htm'>7.4  小结</a></div><div style='float:left;width:49%'>·<a href='100165353.htm'>8.1  System.String类</a></div><div style='float:right;width:49%'>·<a href='100165355.htm'>8.1.2  格式化字符串</a></div><div style='float:left;width:49%'>·<a href='100165356.htm'>8.2  正则表达式</a></div><div style='float:right;width:49%'>·<a href='100165357.htm'>8.3  小结</a></div></div>
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