IP地址与整数的互换算法代码,CSharp代码库,德仔网

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【CSharp】 IP地址与整数的互换算法
作者: / 发布于2011/7/20/ 665
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<p style="text-indent: 0px; margin: 5px auto">/// <summary>
<p style="text-indent: 0px; margin: 5px auto">///<span class="Apple-converted-space"> </span><span style="font-family: 宋体; color: green">将</span><span style="color: green">IP</span><span style="font-family: 宋体; color: green">地址转为数值形式</span>
<p style="text-indent: 0px; margin: 5px auto">/// </summary>
<p style="text-indent: 0px; margin: 5px auto">/// <returns><span style="font-family: 宋体; color: green">长整数</span></returns>
<p style="text-indent: 0px; margin: 5px auto"><span style="color: blue">public</span><span class="Apple-converted-space"> </span><span style="color: blue">static<span class="Apple-converted-space"> </span><span style="color: blue">long</span><span class="Apple-converted-space"> </span></span><span style="font-family: 宋体">ToDigit</span>(<span style="color: blue"><span style="color: rgb(255,128,0)">IPAddress</span><span class="Apple-converted-space"> </span>ip)</span>
<p style="text-indent: 0px; margin: 5px auto">{
<p style="text-indent: 0px; margin: 5px auto"><span><span style="color: blue">int</span><span class="Apple-converted-space"> </span>x<span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">=</span><span class="Apple-converted-space"> </span><span style="color: rgb(0,128,255)">3</span>;</span>
<p style="text-indent: 0px; margin: 5px auto"><span><span style="color: blue">long</span><span class="Apple-converted-space"> </span>l<span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">=</span><span class="Apple-converted-space"> </span><span style="color: rgb(0,128,255)">0</span>;</span>
<p style="text-indent: 0px; margin: 5px auto"><span><span style="color: blue">foreach</span><span class="Apple-converted-space"> </span>(<span style="color: blue">byte</span><span class="Apple-converted-space"> b</span><span class="Apple-converted-space"> </span><span style="color: blue">in</span><span class="Apple-converted-space"> </span>ip<span style="color: rgb(128,0,255)">.</span>GetAddressBytes())</span>
<p style="text-indent: 0px; margin: 5px auto"><span>{</span>
<p style="text-indent: 0px; margin: 5px auto"><span>l<span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">+=</span><span class="Apple-converted-space"> </span>(<span style="color: blue">long</span>)b <span style="color: rgb(128,0,255)"><<</span><span class="Apple-converted-space"> </span><span style="color: rgb(0,128,255)">8</span><span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">*</span><span class="Apple-converted-space"> </span>x<span style="color: rgb(128,0,255)">&ndash;</span>;</span>
<p style="text-indent: 0px; margin: 5px auto"><span>}</span>
<p style="text-indent: 0px; margin: 5px auto"><span><span style="color: blue">return</span><span class="Apple-converted-space"> </span>l;</span>
<p style="text-indent: 0px; margin: 5px auto">}
<p style="text-indent: 0px; margin: 5px auto">
<p style="text-indent: 0px; margin: 5px auto">

<p style="text-indent: 0px; margin: 5px auto">/// <summary>
<p style="text-indent: 0px; margin: 5px auto">///<span class="Apple-converted-space"> </span><span style="font-family: 宋体; color: green">将数值转换为</span><span style="color: green">IP</span><span style="font-family: 宋体; color: green">地址</span>
<p style="text-indent: 0px; margin: 5px auto">/// </summary>
<p style="text-indent: 0px; margin: 5px auto">/// <returns><span style="color: green">IP</span><span style="font-family: 宋体; color: green">地址</span></returns>
<p style="text-indent: 0px; margin: 5px auto"><span style="color: blue">public</span><span class="Apple-converted-space"> </span><span style="color: blue">static<span class="Apple-converted-space"> </span><span style="color: rgb(255,128,0)">IPAddress</span><span class="Apple-converted-space"> </span></span><span style="font-family: 宋体">ToIP</span>(<span style="color: blue"><span style="color: blue">long</span><span class="Apple-converted-space"> </span>l)</span>
<p style="text-indent: 0px; margin: 5px auto">{
<p style="text-indent: 0px; margin: 5px auto"><span><span style="color: blue">var</span><span class="Apple-converted-space"> </span>bt<span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">=</span><span class="Apple-converted-space"> </span><span style="color: blue">new</span><span class="Apple-converted-space"> </span><span style="color: blue">byte</span>[<span style="color: rgb(0,128,255)">4</span>];</span>
<p style="text-indent: 0px; margin: 5px auto"><span><span style="color: blue">for</span><span class="Apple-converted-space"> </span>(<span style="color: blue">int</span><span class="Apple-converted-space"> </span>i<span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">=</span><span class="Apple-converted-space"> </span><span style="color: rgb(0,128,255)">0</span>; i<span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)"><</span><span class="Apple-converted-space"> </span><span style="color: rgb(0,128,255)">4</span>; i<span style="color: rgb(128,0,255)">++</span>)</span>
<p style="text-indent: 0px; margin: 5px auto"><span>{</span>
<p style="text-indent: 0px; margin: 5px auto"><span>bt[<span style="color: rgb(0,128,255)">3</span><span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">-</span><span class="Apple-converted-space"> </span>i]<span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">=</span><span class="Apple-converted-space"> </span>(<span style="color: blue">byte</span>)(l<span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">>></span><span class="Apple-converted-space"> </span><span style="color: rgb(0,128,255)">8</span><span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">*</span><span class="Apple-converted-space"> </span>i<span class="Apple-converted-space"> </span><span style="color: rgb(128,0,255)">&</span><span class="Apple-converted-space"> </span><span style="color: rgb(0,128,255)">255</span>);</span>
<p style="text-indent: 0px; margin: 5px auto"><span>}</span>
<p style="text-indent: 0px; margin: 5px auto"><span><span style="color: blue">return</span><span class="Apple-converted-space"> </span><span style="color: blue">new</span><span class="Apple-converted-space"> </span><span style="color: rgb(255,128,0)">IPAddress</span>(bt);</span>
<p style="text-indent: 0px; margin: 5px auto">}
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