C# 根据特定的父ID LINQ获取XML项
我有以下XMLC# 根据特定的父ID LINQ获取XML项,c#,asp.net,xml,linq,linq-to-xml,C#,Asp.net,Xml,Linq,Linq To Xml,我有以下XML <Group> <Id>1</Id> <GroupName>Fruit Juices</GroupName> <PersonId>46</PersonId> <DateCreated>0001-01-01T00:00:00</DateCreated> <DateModified>0001-01-01T00:00:00</Dat
<Group>
<Id>1</Id>
<GroupName>Fruit Juices</GroupName>
<PersonId>46</PersonId>
<DateCreated>0001-01-01T00:00:00</DateCreated>
<DateModified>0001-01-01T00:00:00</DateModified>
<Products ProductId="24">
<ProductName>Grapes</ProductName>
<CategoryId>2</CategoryId>
<CategoryName></CategoryName>
<SubCategoryId>4</SubCategoryId>
<SubCategoryName>Armbands</SubCategoryName>
</Products>
</Group>
<Group>
<Id>2</Id>
<GroupName>Wrist Watches</GroupName>
<PersonId>49</PersonId>
<DateCreated>0001-01-01T00:00:00</DateCreated>
<DateModified>0001-01-01T00:00:00</DateModified>
<Products ProductId="20">
<ProductName>Hard Drives</ProductName>
<CategoryId>2</CategoryId>
<CategoryName></CategoryName>
<SubCategoryId>4</SubCategoryId>
<SubCategoryName>Armbands</SubCategoryName>
</Products>
<Products ProductId="24">
<ProductName>Grapes</ProductName>
<CategoryId>2</CategoryId>
<CategoryName></CategoryName>
<SubCategoryId>4</SubCategoryId>
<SubCategoryName>Armbands</SubCategoryName>
</Products>
<Products ProductId="34">
<ProductName>Oranges</ProductName>
<CategoryId>2</CategoryId>
<CategoryName></CategoryName>
<SubCategoryId>4</SubCategoryId>
<SubCategoryName>Armbands</SubCategoryName>
</Products>
<Products ProductId="50">
<ProductName>Printers</ProductName>
<CategoryId>2</CategoryId>
<CategoryName></CategoryName>
<SubCategoryId>4</SubCategoryId>
<SubCategoryName>Armbands</SubCategoryName>
</Products>
<Products ProductId="52">
<ProductName>Printers</ProductName>
<CategoryId>2</CategoryId>
<CategoryName></CategoryName>
<SubCategoryId>4</SubCategoryId>
<SubCategoryName>Armbands</SubCategoryName>
</Products>
</Group>
我如何让它根据GroupID实际获得产品
谢谢你的帮助和时间
*****************更新***********************
将节点强制转换为
int
、string
或DateTime
,而不是转换节点值:
from g in xdoc.Descendants("Group")
where (int)g.Element("Id") == id // filtering groups here
select new Group {
Id = (int)g.Element("Id"),
GroupName = (string)g.Element("GroupName"),
PersonId = (int)g.Element("PersonId"),
DateCreated = (DateTime)g.Element("DateCreated"),
DateModified = (DateTime)g.Element("DateModified"),
Products = g.Elements("Products")
.Select(p => new Product {
ProductId = (int)p.Attribute("ProductId"),
ProductName = (string)p.Element("ProductName"),
CategoryName = (string)p.Element("CategoryName"),
SubCategoryId = (int)p.Element("SubCategoryId"),
SubCategoryName = (string)p.Element("SubCategoryName")
}).ToList()
}
另外,我认为最好将xml中的所有产品分组在
元素下,每个产品都包含
元素。使用节点转换为int
、字符串
、或日期时间
,而不是转换节点值:
from g in xdoc.Descendants("Group")
where (int)g.Element("Id") == id // filtering groups here
select new Group {
Id = (int)g.Element("Id"),
GroupName = (string)g.Element("GroupName"),
PersonId = (int)g.Element("PersonId"),
DateCreated = (DateTime)g.Element("DateCreated"),
DateModified = (DateTime)g.Element("DateModified"),
Products = g.Elements("Products")
.Select(p => new Product {
ProductId = (int)p.Attribute("ProductId"),
ProductName = (string)p.Element("ProductName"),
CategoryName = (string)p.Element("CategoryName"),
SubCategoryId = (int)p.Element("SubCategoryId"),
SubCategoryName = (string)p.Element("SubCategoryName")
}).ToList()
}
另外,我认为最好将xml中的所有产品分组在
元素下,每个产品都有
元素。什么是xdoc.substands(“组”)?你是说xdoc.后代(“组”)?什么是xdoc.后代(“组”)?你是说xdoc.后代(“组”)?是的,这是有效的。汉克斯·别列佐夫斯基。为什么所有的产品都在一个元素下?我认为他们会更好地分组。我发现的问题是,它只返回一个产品,即使有多个产品。我用新代码更新了问题对不起,别理我的评论别列佐夫斯基,只是注意到了硬编码bit@Johann因为你有一组产品,xml是分层的,所以把产品分组在一些分组节点下是很好的。好吧,我知道你知道别列佐夫斯基,我添加了产品标签来包装产品。是的,这很有效。汉克斯·别列佐夫斯基。为什么所有的产品都在一个元素下?我认为他们会更好地分组。我发现的问题是,它只返回一个产品,即使有多个产品。我用新代码更新了问题对不起,别理我的评论别列佐夫斯基,只是注意到了硬编码bit@Johann因为您有一组产品,xml是分层的,所以最好将产品分组到某个分组节点下。好的,我知道您知道别列佐夫斯基,我添加了产品标签来包装产品
from g in xdoc.Descendants("Group")
where (int)g.Element("Id") == id // filtering groups here
select new Group {
Id = (int)g.Element("Id"),
GroupName = (string)g.Element("GroupName"),
PersonId = (int)g.Element("PersonId"),
DateCreated = (DateTime)g.Element("DateCreated"),
DateModified = (DateTime)g.Element("DateModified"),
Products = g.Elements("Products")
.Select(p => new Product {
ProductId = (int)p.Attribute("ProductId"),
ProductName = (string)p.Element("ProductName"),
CategoryName = (string)p.Element("CategoryName"),
SubCategoryId = (int)p.Element("SubCategoryId"),
SubCategoryName = (string)p.Element("SubCategoryName")
}).ToList()
}