blocks|key|1281879|text|您可能正在谈论EF4自我跟踪实体。可以在"VSInstallDir\Common7\IDE\Extensions\Microsoft\Entity框架Tools\Templates\Includes\EF.Utility.CS.ttinclude".中找到CodeGenerationTools类，它是通过<#@+include+file="EF.Utility.CS.ttinclude"#>指令包含的|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1281880|FieldName函数的定义如下：|1281881|private+string+FieldName(string+name)
{
++if+(CamelCaseFields)
++{
++++return+"_"+%2B+CamelCase(name);
++}
++else
++{
++++return+"_"+%2B+name;
++}
}|code-block|syntax|javascript|1281882|"_“是硬编码在函数中的。编写你自己的代码应该不难。注意，ttinclude类是这个ttinclude文件特有的，并不是在T4中生成代码的通用嵌入式方法。|1281883|entityMap^0|3K|J|49|18|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

You're probably talking about EF4 Self Tracking Entities. The <code>CodeGenerationTools</code> class is included via the <code>&lt;#@ include file="EF.Utility.CS.ttinclude"#&gt;</code> directive, which you can find at "[VSInstallDir]\Common7\IDE\Extensions\Microsoft\Entity Framework Tools\Templates\Includes\EF.Utility.CS.ttinclude".

The FieldName function is defined as such:

<pre><code>private string FieldName(string name)
{
 if (CamelCaseFields)
 {
 return "_" + CamelCase(name);
 }
 else
 {
 return "_" + name;
 }
}
</code></pre>

The "_" is hardcoded in the function. Coding your own shouldn't be difficult. Note that the <code>CodeGenerationTools</code> class is specific to this ttinclude file and isn't a generic and embedded way to generate code in T4.

blocks|key|536979|text|我已经编写了以下方法来使第一个字符大写，删除空格/下划线，并使下一个字符大写。请参阅下面的示例。请随意使用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|536980|private+string+CodeName(string+name)
{
++++name+=+name.ToLowerInvariant();

++++string+result+=+name;
++++bool+upperCase+=+false;

++++result+=+string.Empty;
++++for+(int+i+=+0;+i+<+name.Length;+i%2B%2B)
++++{
++++++++if+(name[i]+==+'+'+%7C%7C+name[i]+==+'_')
++++++++{
++++++++++++upperCase+=+true;
++++++++}
++++++++else
++++++++{
++++++++++++if+(i+==+0+%7C%7C+upperCase)
++++++++++++{
++++++++++++++++result+%2B=+name[i].ToString().ToUpperInvariant();
++++++++++++++++upperCase+=+false;
++++++++++++}
++++++++++++else
++++++++++++{
++++++++++++++++result+%2B=+name[i];
++++++++++++}
++++++++}
++++}

++++return+result;
}|code-block|syntax|javascript|536981|输入/输出样本:+first_name+=+FirstName，id+=+Id，状态消息=+StatusMessage|536982|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I've written the following method to make first character upper case, remove spaces/underscores and make next character upper case. See samples below. Feel free to use.

<pre><code>private string CodeName(string name)
{
 name = name.ToLowerInvariant();

 string result = name;
 bool upperCase = false;

 result = string.Empty;
 for (int i = 0; i &lt; name.Length; i++)
 {
 if (name[i] == ' ' || name[i] == '_')
 {
 upperCase = true;
 }
 else
 {
 if (i == 0 || upperCase)
 {
 result += name[i].ToString().ToUpperInvariant();
 upperCase = false;
 }
 else
 {
 result += name[i];
 }
 }
 }

 return result;
}
</code></pre>

input/output samples:
first_name = FirstName,
id = Id,
status message = StatusMessage

blocks|key|2038835|text|这是一个很好的建议，但是它不能帮助你知道在哪里放置这样一个函数的正确位置……|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2038836|有没有关于分解EF+.tt文件或逐步执行输出生成以了解它是如何构建输出的指导？|2038837|通过将上面的函数插入到一个名为(Ef4.3)的函数中，我能够成功地使用它。|2038838|公共字符串属性(EdmProperty+edmProperty)|2038839|它似乎用于输出类似于"public+int+fieldname+{+get；set；}“这样的行。|2038840|并将第三个(index+{2})参数更改为与修改名称的函数一起包装的格式，如下所示：|2038841|_typeMapper.GetTypeName(edmProperty.TypeUsage),+//unchanged
UnderScoreToPascalCase(_code.Escape(edmProperty)),+//wrapped+"name"
_code.SpaceAfter(Accessibility.ForGetter(edmProperty)),+//+unchanged|code-block|syntax|javascript|2038842|这并不完美，例如:它没有保留现有的"Ucasing“，也不关心这样的事情:+customerIP输出:+Customerip，IMO可读性不是很好……|2038843|但这比我看到的要好得多，因为数据库中混杂着camelCase、PascalCase和下划线分隔，非常可怕。|2038844|不管怎样，希望这能帮助到某个人。|2038845|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|11|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|12|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|13|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|14|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|17|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

This is good advice however it doesn't help you in knowing WHERE the right place to put such a function is...

Is there any guidance on DECOMPOSING the EF .tt files or stepping through the output generation to see how it builds the output?

I was able to use the above function successfully by plugging it into a function called 
(Ef4.3)

public string Property(EdmProperty edmProperty) 

Which appears to be used to output the lines like "public int fieldname { get; set; }"

and changed the 3rd (index {2}) param to the formating to wrap with the function to modify the name, like this:

<pre><code>_typeMapper.GetTypeName(edmProperty.TypeUsage), //unchanged
UnderScoreToPascalCase(_code.Escape(edmProperty)), //wrapped "name"
_code.SpaceAfter(Accessibility.ForGetter(edmProperty)), // unchanged
</code></pre>

This is not perfect, eg: it doesn't keep existing "Ucasing" and doesn't care about things like this:
customerIP
outputs: Customerip
which IMO is not very readable...

but its better than what I WAS looking at which was a nightmare because the database was intermingled mess of camelCase, PascalCase and underscore separation, so pretty horrific.

anyway hope this helps someone...

I'm using T4 to generate some class definitions and find that I'm getting an underscore in front of my field names.

I have set

<pre><code>code.CamelCaseFields = true;
</code></pre>

just to be safe (even though I understand that's the default) but still end up with _myField rather than myField.

How can I generate a field name without the '_' character?

Also, where is the documentation for T4? I'm finding plenty of resources such as

<a href="http://msdn.microsoft.com/en-us/library/bb126445(v=VS.100).aspx" rel="nofollow noreferrer">Code Generation and Text Templates</a> and numerous blogs, but I have not found the class-by-class, property-by-property documentation.

T4 FieldName in camelCase without Underscore?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在使用T4生成一些类定义，并且发现在我的字段名前面有一个下划线。我已经设置了code.CamelCaseFields = true;为了安全起见(尽管我知道这是默认设置)，但最终还是使用了_myField而不是myField。如何生成没有'_‘字符的字段名？另外，T4的文档在哪里？我找到了大量的资源，比如和许多博客...

问camelCase中的T4 FieldName不带下划线？
EN

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问camelCase中的T4 FieldName不带下划线？EN