如何在vb.net中获取xml中的属性值 [英] how to get attribute value in xml in vb.net

问题描述

嗨我有一个xml文件

hi i have a xml file

<?xml version="1.0"?>
<Root>
  <FileName Name="Logdata">
    <Id>720738147</Id>
    <FileName>Logdata</FileName>
    <FilePath>d:\manohar\Logdata.xml</FilePath>
    <Description>fasdf</Description>
  </FileName>
  <FileName FIleName="RootProcess">
    <Id>720738147</Id>
    <FileName>RootProcess</FileName>
    <FilePath>RootProcess</FilePath>
    <Description>fsad fsadf</Description>
  </FileName>
  <FileName FIleName="PlantProcess">
    <Id>789088212</Id>
    <FileName>fsad</FileName>
    <FilePath>fsad</FilePath>
    <Description>fas dsafd</Description>
  </FileName>
</Root>

和我的代码是
i想得到name =LogData的属性



但是没有得到

and my code is
i want to get the attribute of name ="LogData"

but not getting

If (IO.File.Exists(Server.MapPath("~/App_Data/XMLFile.xml"))) Then
         Dim xd As New XmlDocument()
           xd.Load(Server.MapPath("~/App_Data/XMLFile.xml"))

           ' Find the node where the Person's attribute ID is 1 using its XPath.
           Dim nod As XmlNode = xd.SelectSingleNode("/Root/FileName[@Name='LogData']")
           If nod IsNot Nothing Then
               Dim node As XmlNode = xd.CreateNode(XmlNodeType.Element, "FileName", Nothing)
               '  doc.DocumentElement.SetAttribute("FileName", "" & dpFiles.SelectedItem.Text & "")

               Dim xkey As XmlAttribute = xd.CreateAttribute("FIleName")
               xkey.Value = dpFiles.SelectedItem.Text
               node.Attributes.Append(xkey)
               'create FileName
               Dim nodeId As XmlNode = xd.CreateElement("Id")
               nodeId.InnerText = lblRandomNumber.Text
               'create FileName
               Dim nodeFileName As XmlNode = xd.CreateElement("FileName")
               nodeFileName.InnerText = txtFileName.Text

               'create FilePath
               Dim nodeFilePath As XmlNode = xd.CreateElement("FilePath")
               nodeFilePath.InnerText = txtFileName.Text

               'create FileDesc
               Dim nodeFileDesc As XmlNode = xd.CreateElement("Description")
               nodeFileDesc.InnerText = txtDesc.Text

               'add to parent node
               'node.AppendChild(nodeTitle)
               node.AppendChild(nodeId)
               node.AppendChild(nodeFileName)
               node.AppendChild(nodeFilePath)
               node.AppendChild(nodeFileDesc)
               'add to elements collection
               xd.DocumentElement.AppendChild(node)
           Else
               MsgBox("No node")

           End If

           ' Save the Xml.
           xd.Save(Server.MapPath("~/App_Data/XMLFile.xml"))
       End If

可以任何帮助关于这个问题

can any one help regarding this issue

推荐答案

在XML中你有Logdata，在代码中你正在搜索LogData（D caps）。 XML是大小写敏感，使其成为同样的情况。

In XML you have Logdata and in code you are searching for LogData (D caps). XML is case sensitve make it same case.

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