一段用来读取XML文件信息的VB代码
使用了递归方式
VB.net代码如下:
Imports System.xml
Public Class Form1
Inherits System.Windows.Forms.Form
#Region " Windows 窗体设计器生成的代码 "
Public 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(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()
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(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 Sub
Private 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
Public Class Form1
Inherits System.Windows.Forms.Form
#Region " Windows 窗体设计器生成的代码 "
Public 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(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()
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(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 Sub
Private 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