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12.1.4 读取Visual Studio 6项目
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12.1.4 读取Visual Studio 6项目
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<div style='float:left;width:49%'>·<a href='100165381.htm'>12.1.1 创建项目</a></div><div style='float:right;width:49%'>·<a href='100165382.htm'>12.1.2 解决方案和项目</a></div><div style='float:left;width:49%'>·<a href='100165383.htm'>12.1.3 Windows应用程序代码</a></div><div style='float:right;width:49%'>·<a href='100165385.htm'>12.1.5 项目的浏览和编码</a></div><div style='float:left;width:49%'>·<a href='100165386.htm'>12.1.6 生成项目</a></div><div style='float:right;width:49%'>·<a href='100165387.htm'>12.1.7 调试</a></div></div>
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<div id="text"> <link href="css.css" rel="stylesheet" type="text/css" /><h3 style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 0cm; MARGIN-RIGHT: 0cm; FTEL: 8.15pt"><span lang="EN-US">12.1.4 </span><span style="FONT-FAMILY: 黑体">读取</span><span lang="EN-US">Visual Studio 6</span><span style="FONT-FAMILY: 黑体">项目</span></h3>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">利用</span><span lang="EN-US">C#</span><span style="FONT-FAMILY: 宋体">编写代码时，不需要读取任何旧的</span><span lang="EN-US">Visual Studio 6</span><span style="FONT-FAMILY: 宋体">项目，因为</span><span lang="EN-US">C#</span><span style="FONT-FAMILY: 宋体">代码在</span><span lang="EN-US">Visual Studio 6</span><span style="FONT-FAMILY: 宋体">中不存在。但是，语言的互操作性是</span><span lang="EN-US">.NET Framework</span><span style="FONT-FAMILY: 宋体">的一个重要部分，</span><span lang="EN-US">C#</span><span style="FONT-FAMILY: 宋体">代码可能要与</span><span lang="EN-US">VB</span><span style="FONT-FAMILY: 宋体">代码或</span><span lang="EN-US">C++</span><span style="FONT-FAMILY: 宋体">代码一起使用。此时就需要编辑由</span><span lang="EN-US">Visual Studio 6</span><span style="FONT-FAMILY: 宋体">创建的项目了。</span></p>
<p class="MsoNormal"><span lang="EN-US">Visual Studio .NET</span><span style="FONT-FAMILY: 宋体">可以读取和升级</span><span lang="EN-US">Visual Studio 6</span><span style="FONT-FAMILY: 宋体">项目和工作区，这不同于</span><span lang="EN-US">C++</span><span style="FONT-FAMILY: 宋体">、</span><span lang="EN-US">VB</span><span style="FONT-FAMILY: 宋体">和</span><span lang="EN-US"> J++</span><span style="FONT-FAMILY: 宋体">项目。</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-US">●<span style="FONT: 7pt 'Times New Roman'"> </span></span><span style="FONT-FAMILY: 宋体">在</span><span lang="EN-US">Visual C++</span><span style="FONT-FAMILY: 宋体">中，不需要修改源代码。所有的旧</span><span lang="EN-US">C++</span><span style="FONT-FAMILY: 宋体">代码使用新的</span><span lang="EN-US">C++</span><span style="FONT-FAMILY: 宋体">编译器仍可正常工作。显然它们不是托管代码，但仍可以编译为运行在</span><span lang="EN-US">.NET</span><span style="FONT-FAMILY: 宋体">运行库外部的代码。如果代码要与</span><span lang="EN-US">.NET Framework</span><span style="FONT-FAMILY: 宋体">集成起来，就需要编辑它。如果要让</span><span lang="EN-US">Visual Studio .NET</span><span style="FONT-FAMILY: 宋体">读取旧的</span><span lang="EN-US">C++</span><span style="FONT-FAMILY: 宋体">项目，则只需增加一个新的解决方案文件和更新的项目文件。原来的</span><span lang="EN-US">.dsw </span><span style="FONT-FAMILY: 宋体">和</span> <span lang="EN-GB">.dsp</span><span style="FONT-FAMILY: 宋体">文件不变，这样，该项目就可以在需要时用</span><span lang="EN-US">Visual Studio 6</span><span style="FONT-FAMILY: 宋体">编辑了。</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-US">●<span style="FONT: 7pt 'Times New Roman'"> </span></span><span style="FONT-FAMILY: 宋体">对于</span><span lang="EN-US">Visual Basic</span><span style="FONT-FAMILY: 宋体">，就比较复杂了。如第</span><span lang="EN-US">1</span><span style="FONT-FAMILY: 宋体">章所述，</span><span lang="EN-US">VB.NET</span><span style="FONT-FAMILY: 宋体">的设计与</span><span lang="EN-US">VB</span><span style="FONT-FAMILY: 宋体">非常类似，也有许多相同的语法，但在许多方面，它是一种新的语言。在</span><span lang="EN-US">Visual Basic</span><span style="FONT-FAMILY: 宋体">中，源代码大都由控件的事件处理程序组成，实际上，实例化主窗口和许多控件的代码并不是</span><span lang="EN-US">Visual Basic</span><span style="FONT-FAMILY: 宋体">代码的一部分，而是隐藏在后台上，是项目配置的一部分。而</span><span lang="EN-US">VB.NET</span><span style="FONT-FAMILY: 宋体">则与</span><span lang="EN-US">C#</span><span style="FONT-FAMILY: 宋体">的工作方式相同，把整个程序都放在源文件中，即显示主窗口和所有控件的代码都必须放在源文件中。与</span><span lang="EN-US">C#</span><span style="FONT-FAMILY: 宋体">一样，</span><span lang="EN-US">VB.NET</span><span style="FONT-FAMILY: 宋体">要求所有的代码都是面向对象的，是类的一部分，而</span><span lang="EN-US">VB</span><span style="FONT-FAMILY: 宋体">则没有</span><span lang="EN-US">.NET</span><span style="FONT-FAMILY: 宋体">中类的概念。如果要使用</span><span lang="EN-US">Visual Studio .NET</span><span style="FONT-FAMILY: 宋体">读取</span><span lang="EN-US">Visual Basic</span><span style="FONT-FAMILY: 宋体">项目，在处理前必须把全部源代码升级为</span><span lang="EN-US">Visual Basic .NET</span><span style="FONT-FAMILY: 宋体">，这会对</span><span lang="EN-US">VB</span><span style="FONT-FAMILY: 宋体">代码做许多修改。在很大程度上，</span><span lang="EN-US">Visual Basic .NET</span><span style="FONT-FAMILY: 宋体">可以自动进行修改，创建一个新的</span><span lang="EN-US">VB.NET</span><span style="FONT-FAMILY: 宋体">解决方案，它提供的源代码与原来的</span><span lang="EN-US">VB</span><span style="FONT-FAMILY: 宋体">代码大不相同，需要仔细检查生成的代码，以确保项目仍能正常工作。甚至还要找出</span><span lang="EN-US">Visual Basic .NET</span><span style="FONT-FAMILY: 宋体">注释掉的某些代码块，因为</span><span lang="EN-US">Visual Basic .NET</span><span style="FONT-FAMILY: 宋体">不能确定这些代码能做什么工作，这部分代码必须手工编辑。</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-US">●<span style="FONT: 7pt 'Times New Roman'"> </span></span><span style="FONT-FAMILY: 宋体">对于</span><span lang="EN-US">Microsoft</span><span style="FONT-FAMILY: 宋体">来说，</span><span lang="EN-US">J++</span><span style="FONT-FAMILY: 宋体">现在是一种过时的语言，</span><span lang="EN-US">.NET</span><span style="FONT-FAMILY: 宋体">不直接支持它。但为了让已有的</span><span lang="EN-US">J++</span><span style="FONT-FAMILY: 宋体">代码仍可继续使用，有几个工具可以让</span><span lang="EN-US">J++</span><span style="FONT-FAMILY: 宋体">代码在</span><span lang="EN-US">.NET</span><span style="FONT-FAMILY: 宋体">中可用。</span><span lang="EN-US">Visual Studio .NET 2003</span><span style="FONT-FAMILY: 宋体">包括</span><span lang="EN-US">J#</span><span style="FONT-FAMILY: 宋体">开发环境，它可以处理</span><span lang="EN-US">J++</span><span style="FONT-FAMILY: 宋体">代码。还有一种可以自动把</span><span lang="EN-US">J++</span><span style="FONT-FAMILY: 宋体">代码转换为</span><span lang="EN-US">C#</span><span style="FONT-FAMILY: 宋体">代码的工具，该工具类似于从</span><span lang="EN-US">VB6</span><span style="FONT-FAMILY: 宋体">到</span><span lang="EN-US">VB.NET</span><span style="FONT-FAMILY: 宋体">的升级工具。这些工具组合为一个软件</span><span lang="EN-US">JUMP (Java User Migration Path)</span><span style="FONT-FAMILY: 宋体">，在编写本书的过程中，它们还没有附在</span><span lang="EN-US">.NET</span><span style="FONT-FAMILY: 宋体">的</span><span lang="EN-US">VS.NET</span><span style="FONT-FAMILY: 宋体">中，但其详细情况可在通过</span><span lang="EN-US">http://msdn.microsoft.com/visualj/jump/ default. asp</span><span style="FONT-FAMILY: 宋体">获取。</span></p></div>
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<div style='float:left;width:49%'>·<a href='100165381.htm'>12.1.1 创建项目</a></div><div style='float:right;width:49%'>·<a href='100165382.htm'>12.1.2 解决方案和项目</a></div><div style='float:left;width:49%'>·<a href='100165383.htm'>12.1.3 Windows应用程序代码</a></div><div style='float:right;width:49%'>·<a href='100165385.htm'>12.1.5 项目的浏览和编码</a></div><div style='float:left;width:49%'>·<a href='100165386.htm'>12.1.6 生成项目</a></div><div style='float:right;width:49%'>·<a href='100165387.htm'>12.1.7 调试</a></div></div>
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