将VB Linq转换为XML到C# [英] converting VB Linq to XML to C#
问题描述
我正在将所有应用程序从VB.Net转换为C#.
在此问题的第一个版本中，我为简洁起见而努力，但可能太简短了.所以我会再试一次.
以我的有限经验，VB和C#中的LINQ语法相似.例如，在VB中，我可以编写
I''m in the process of converting all my applications from VB.Net to C#.
In the first version of this question I was striving for brevity but may have been too brief. So I''ll try again.
In my limited experience, LINQ syntax in VB and C# is similar. For example, in VB I can write
Dim myArrayOfStateNames(3) As String
Sub FillStates()
myArrayOfStateNames(0) = "WA"
myArrayOfStateNames(1) = "OR"
myArrayOfStateNames(2) = "ID"
myArrayOfStateNames(3) = "CA"
End Sub
ReadOnly Property GetIdaho() As String
Get
Dim myState = From oneState In myArrayOfStateNames Where oneState = "ID" Select oneState
Return myState.First
End Get
End Property
同样，在C#中，我可以编写
Similarly in C# I can write
string[] myArrayOfStateNames = new string[4];
public void FillStates()
{
myArrayOfStateNames[0] = "WA";
myArrayOfStateNames[1] = "OR";
myArrayOfStateNames[2] = "ID";
myArrayOfStateNames[3] = "CA";
}
public string GetIdaho
{
get
{
var myState = from oneState in myArrayOfStateNames where oneState == "ID" select oneState;
return myState.First();
}
在这些示例中，"myState ="之后的两个LINQ语句对我而言非常相似.语法略有不同，但是很接近.
但是，当我尝试将LINQ与XML结合使用时，事情显然不是那么简单.在VB中，我可以写
In these examples, the two LINQ statements after ''myState = '' are, to me anyway, very similar. The syntax is a little different, but close.
However, when I try to use LINQ with XML, things are apparently not so straightforward. In VB I can write
Dim myXML As New System.Xml.Linq.XDocument
Sub MakeSomeXML()
myXML = _
<?xml version="1.0" encoding="utf-8"?>
<?qbxml version="7.0"?>
<QBXML>
<QBXMLMsgsRq onError="stopOnError">
<ItemQueryRq>
<FullName>Joe Jones</FullName>
<OwnerID>0</OwnerID>
</ItemQueryRq>
</QBXMLMsgsRq>
</QBXML>
End Sub
ReadOnly Property XMLName() As String
Get
Dim name = From someXML In myXML...<ItemQueryRq> Select someXML.<FullName>
Return name.First.Value
End Get
End Property
但是当我尝试像这样转换为C#时
But when I try to convert to C# like this
System.Xml.Linq.XDocument myXML;
public void MakeSomeXML()
{
System.Xml.Linq.XDocument myXML = System.Xml.Linq.XDocument.Parse(
@" <?xml version=""1.0"" encoding=""utf-8""?>
<?qbxml version=""7.0""?>
<QBXML>
<QBXMLMsgsRq onError=""stopOnError"">
<ItemQueryRq>
<FullName>Joe Jones</FullName>
<OwnerID>0</OwnerID>
</ItemQueryRq>
</QBXMLMsgsRq>
</QBXML>");
}
public string XMLName
{
get
{
string name = from someXML in myXML...<ItemQueryRq> select someXML.<FullName>;
return name;
}
}
来自myXML中的someXML"之后，C#在linq语法上严重窒息，并且C#中的intellisense不会像在VB中那样显示"...<>".语法似乎根本不相似.
有两个问题:
1)我是否缺少明显的东西?
2)如果不是，在C#中解决此问题的正确/最佳方法是什么? C#示例中的LINQ语法显然是错误的，它是可纠正的还是我走在一条完全错误的道路上?我是否应该使用具有不同语法的"from myXML中的from someXML"类型的语句buth?改用XMLReader?使用XPath吗?
非常感谢.
C# chokes badly on the linq syntax after ''from someXML in myXML'' and the intellisense in C# does not show ''...<>'' as it does in VB. the syntax is seemingly not at all similar.
So two questions:
1) am I missing something obvious?
2) if not, what is the proper/best way to approach this in C#? The LINQ syntax in the C# example is obviously wrong, is it correctable or am I on a totally wrong path? Should I use a ''from someXML in myXML'' type of statement buth with a different syntax? Use XMLReader instead? Use XPath?
Thanks much.
推荐答案
您只张贴了原始的VB代码，也许您可以添加自己编写的C#代码，然后有人可以为您提供帮助.
You have onle posted the original VB code, perhaps you could add the C# code that you have written and then someone may be able to help you.
为回答一个答案(并感谢您的回答)，我进行了详细说明并重写了问题.
In response to the one answer (and thanks for the answer) I went for verbosity and rewrote the question.
字符串名称=来自myXML中的someXML ...< itemqueryrq>选择someXML.<全名> ;;
string name = from someXML in myXML...<itemqueryrq> select someXML.<fullname>;
我不认为这是C#，缺乏智能通常是一个线索.但是，由于不熟悉VB，我不知道应该怎么做.
I don''t think that this is C#, the lack of intellisense is usually a clue. However, I have no idea what it should be as I''m not that familiar with VB.
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