Question

这是我的XML示例：

        <Library>
            <Stack>
                <Book>
                    <Author>....</Author>
                    <Date>....</Date>
                </Book>
                <Book>
                    <Author>....</Author>
                    <Date>....</Date>
                </Book>
            </Stack>
            <Stack>
                <SectionScience>
                    <Book>
                        <Author>....</Author>
                        <Date>....</Date>
                    </Book>
                </SectionScience>
                <SectionHorror>
                    <Book>
                        <Author>....</Author>
                        <Date>....</Date>
                    </Book>
                </SectionHorror>
                <Book>
                    <Author>....</Author>
                    <Date>....</Date>
                </Book>
            </Stack>
        </Library>

我试图实现一个恢复所有这些信息的方法，但它不起作用：它只恢复Stack中的一个项目，我希望它恢复堆栈中的所有元素。

我得到的是：

堆栈1：第一本书;

筹码2：第一节

这是我的代码：

 private void ConstructionInterface()
 {
   XElement docX = XElement.Load(Application.StartupPath + @"\Library.xml");
   foreach (XElement elemColone in docX.Descendants("Stack"))
     {
       if (elemColone.Element("SectionHorror") != null)
         CreateSectionHorror( elemColone.Element("SectionHorror"));
       else if (elemColone.Element("SectionScience") != null)
         CreateSectionScience( elemColone.Element("SectionScience"));
       else if (elemColone.Elements("Book") != null)
         CreateBook( elemColone.Element("Book"));
        }
    }

Answer 1

您还需要遍历每个Stack的孩子：

foreach (XElement elemColone in docX.Descendants("Stack"))
{
    foreach (var sectionOrBook in elemColone.Elements())
    {
        if (sectionOrBook.Name == "SectionHorror")
            CreateSectionHorror(sectionOrBook);
        else if (sectionOrBook.Name == "SectionScience")
            CreateSectionScience(sectionOrBook);
        else if (sectionOrBook.Name == "Book")
            CreateBook(sectionOrBook);
    }
}

Answer 2

目前还不清楚“恢复”意味着什么，但如果它意味着创建现有XML的副本，那么在VB中使用XElement就可以了

    Dim xe As XElement
    'to load from a file
    '  xe = XElement.Load("Your Path Here")

    ' for testing
    xe =
        <Library>
            <Stack>
                <Book>
                    <Author>....</Author>
                    <Date>....</Date>
                </Book>
                <Book>
                    <Author>....</Author>
                    <Date>....</Date>
                </Book>
            </Stack>
            <Stack>
                <SectionScience>
                    <Book>
                        <Author>....</Author>
                        <Date>....</Date>
                    </Book>
                </SectionScience>
                <SectionHorror>
                    <Book>
                        <Author>....</Author>
                        <Date>....</Date>
                    </Book>
                </SectionHorror>
                <Book>
                    <Author>....</Author>
                    <Date>....</Date>
                </Book>
            </Stack>
        </Library>

    Dim recover As XElement = New XElement(xe) ' this line creates a copy

    '  recover.Save("path here")

如何恢复XML标记中的所有XML元素？

2 个答案: