这篇文章主要介绍“VB.NET怎么读取XML文件”,在日常操作中,相信很多人在VB.NET怎么读取XML文件问题上存在疑惑,小编查阅了各式资料,整理出简单好用的操作方法,希望对大家解答”VB.NET怎么读取XML文件”的疑惑有所帮助!接下来,请跟着小编一起来学习吧!
VB.NET未开发人员带来了不一样的开发方式。其中特有的各种特点和语言特性为编程人员开发程序提供了很大的帮助。我们今天就来看一段实现VB.NET读取XML文件的VB代码。使用了递归方式。
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VB.NET读取XML文件代码如下:
Imports System.xml
Public Class Form1Class Form1
Inherits System.Windows.Forms.Form
#Region " Windows 窗体设计器生成的代码 "
Public Sub New()Sub New()
MyBase.New()
'该调用是 Windows 窗体设计器所必需的。
InitializeComponent()
'在 InitializeComponent()
调用之后添加任何初始化
End Sub
'窗体重写 dispose 以清理组件列表。 Protected Overloads Overrides Sub Dispose()Sub Dispose(ByVal disposing As Boolean) If disposing Then If Not (components Is Nothing) Then components.Dispose() End If End If MyBase.Dispose(disposing) End Sub
'Windows 窗体设计器所必需的 Private components As System.ComponentModel.IContainer '注意: 以下过程是 Windows 窗体设计器所必需的 '可以使用 Windows 窗体设计器修改此过程。 '不要使用代码编辑器修改它。 Friend WithEvents input As System.Windows.Forms.TextBox Friend WithEvents outtext As System.Windows.Forms.TextBox Friend WithEvents Button1 As System.Windows.Forms.Button <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()Sub InitializeComponent() Me.input = New System.Windows.Forms.TextBox Me.outtext = New System.Windows.Forms.TextBox Me.Button1 = New System.Windows.Forms.Button Me.SuspendLayout() ' 'input ' Me.input.Location = New System.Drawing.Point(16, 8) Me.input.Name = "input" Me.input.Size = New System.Drawing.Size(464, 21) Me.input.TabIndex = 0 Me.input.Text = "http://127.0.0.1/fileup/people.xml" ' 'outtext ' Me.outtext.BackColor = System.Drawing.SystemColors.HighlightText Me.outtext.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle Me.outtext.Location = New System.Drawing.Point(0, 40) Me.outtext.Multiline = True Me.outtext.Name = "outtext" Me.outtext.ReadOnly = True Me.outtext.ScrollBars = System.Windows.Forms.ScrollBars.Both Me.outtext.Size = New System.Drawing.Size(624, 472) Me.outtext.TabIndex = 1 Me.outtext.Text = "TextBox2" ' 'Button1 ' Me.Button1.Location = New System.Drawing.Point(504, 8) Me.Button1.Name = "Button1" Me.Button1.Size = New System.Drawing.Size(96, 24) Me.Button1.TabIndex = 2 Me.Button1.Text = "读 取" ' 'Form1 ' Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14) Me.ClientSize = New System.Drawing.Size(632, 517) Me.Controls.Add(Me.Button1) Me.Controls.Add(Me.outtext) Me.Controls.Add(Me.input) Me.Name = "Form1" Me.Text = "Form1" Me.ResumeLayout(False) End Sub
#End Region Private Sub Button1_Click()Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim doc As xmldocument = New xmldocument Dim y As String doc.Load(input.Text) Dim rootnode As XmlElement = doc.DocumentElement outtext.Text = "" enumeratenode(rootnode, 0) End Su
Private Sub enumeratenode()Sub enumeratenode(ByVal node As XmlNode, ByVal indentval As Integer) Dim type As String Select Case node.NodeType Case XmlNodeType.Element type = "元素" Case XmlNodeType.Text type = "文本" Case XmlNodeType.Comment type = "注释" Case Else outtext.AppendText(".") End Select
outtext.AppendText(type & "节点找到") Select Case node.NodeType Case XmlNodeType.Element outtext.AppendText(",name=" & node.Name & vbCrLf) Case XmlNodeType.Text outtext.AppendText(",content=" & node.Value & vbCrLf) Case XmlNodeType.Comment outtext.AppendText(",content=" & node.Value & vbCrLf) Case Else outtext.AppendText(".") End Select
If Not node.Attributes Is Nothing Then If node.Attributes.Count <> 0 Then outtext.AppendText("此节点有属性:") Dim attr As XmlAttribute For Each attr In node.Attributes outtext.AppendText(attr.Name & " =" & attr.Value & vbCrLf) Next End If End If
If node.HasChildNodes Then outtext.AppendText("此节点有子节点:" & vbCrLf) Dim child As XmlNode For Each child In node.ChildNodes enumeratenode(child, indentval + 1) Next End If End Sub End Class
到此,关于“VB.NET怎么读取XML文件”的学习就结束了,希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习,快去试试吧!若想继续学习更多相关知识,请继续关注亿速云网站,小编会继续努力为大家带来更多实用的文章!
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