本文整理汇总了VB.NET中System.Configuration.ConfigurationSectionCollection类的典型用法代码示例。如果您正苦于以下问题:VB.NET ConfigurationSectionCollection类的具体用法?VB.NET ConfigurationSectionCollection怎么用?VB.NET ConfigurationSectionCollection使用的例子?那么, 这里精选的类代码示例或许可以为您提供帮助。
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示例1: UsingCustomSectionCollection
' 导入命名空间
Imports System.Configuration
Imports System.Collections
' Define a custom section programmatically.
Public NotInheritable Class CustomSection
Inherits ConfigurationSection
' The collection (property bag) that contains
' the section properties.
Private Shared _Properties _
As ConfigurationPropertyCollection
' The FileName property.
Private Shared _FileName _
As New ConfigurationProperty("fileName", _
GetType(String), "default.txt", _
ConfigurationPropertyOptions.IsRequired)
' The MasUsers property.
Private Shared _MaxUsers _
As New ConfigurationProperty("maxUsers", _
GetType(Long), Fix(1000), _
ConfigurationPropertyOptions.None)
' The MaxIdleTime property.
Private Shared _MaxIdleTime _
As New ConfigurationProperty("maxIdleTime", _
GetType(TimeSpan), TimeSpan.FromMinutes(5), _
ConfigurationPropertyOptions.IsRequired)
' CustomSection constructor.
Public Sub New()
' Property initialization
_Properties = _
New ConfigurationPropertyCollection()
_Properties.Add(_FileName)
_Properties.Add(_MaxUsers)
_Properties.Add(_MaxIdleTime)
End Sub
' This is a key customization.
' It returns the initialized property bag.
Protected Overrides ReadOnly Property Properties() _
As ConfigurationPropertyCollection
Get
Return _Properties
End Get
End Property
<StringValidator( _
InvalidCharacters:=" ~!@#$%^&*()[]{}/;'""|\", _
MinLength:=1, MaxLength:=60)> _
Public Property FileName() As String
Get
Return CStr(Me("fileName"))
End Get
Set(ByVal value As String)
Me("fileName") = value
End Set
End Property
<LongValidator(MinValue:=1, _
MaxValue:=1000000, ExcludeRange:=False)> _
Public Property MaxUsers() As Long
Get
Return Fix(Me("maxUsers"))
End Get
Set(ByVal value As Long)
Me("maxUsers") = value
End Set
End Property
<TimeSpanValidator(MinValueString:="0:0:30", _
MaxValueString:="5:00:0", ExcludeRange:=False)> _
Public Property MaxIdleTime() As TimeSpan
Get
Return CType(Me("maxIdleTime"), TimeSpan)
End Get
Set(ByVal value As TimeSpan)
Me("maxIdleTime") = value
End Set
End Property
End Class
Class UsingCustomSectionCollection
' Create a custom section.
Shared Sub CreateSection()
Try
Dim customSection As CustomSection
' Get the current configuration file.
Dim config _
As System.Configuration.Configuration = _
ConfigurationManager.OpenExeConfiguration( _
ConfigurationUserLevel.None)
' Create the section entry
' in the <configSections> and the
' related target section in <configuration>.
If config.Sections("CustomSection") Is Nothing Then
customSection = New CustomSection()
config.Sections.Add("CustomSection", customSection)
customSection.SectionInformation.ForceSave = True
config.Save(ConfigurationSaveMode.Full)
End If
Catch err As ConfigurationErrorsException
Console.WriteLine(err.ToString())
End Try
End Sub
Shared Sub GetAllKeys()
Try
Dim config _
As System.Configuration.Configuration = _
ConfigurationManager.OpenExeConfiguration( _
ConfigurationUserLevel.None)
Dim sections _
As ConfigurationSectionCollection = _
config.Sections
Dim key As String
For Each key In sections.Keys
Console.WriteLine("Key value: {0}", key)
Next key
Catch err As ConfigurationErrorsException
Console.WriteLine(err.ToString())
End Try
End Sub
Shared Sub Clear()
Try
Dim config _
As System.Configuration.Configuration = _
ConfigurationManager.OpenExeConfiguration( _
ConfigurationUserLevel.None)
config.Sections.Clear()
config.Save( _
ConfigurationSaveMode.Full)
Catch err As ConfigurationErrorsException
Console.WriteLine(err.ToString())
End Try
End Sub
Shared Sub GetSection()
Try
Dim customSection _
As CustomSection = _
ConfigurationManager.GetSection( _
"CustomSection")
If customSection Is Nothing Then
Console.WriteLine("Failed to load CustomSection.")
Else
' Display section information
Console.WriteLine("Defaults:")
Console.WriteLine("File Name: {0}", _
customSection.FileName)
Console.WriteLine("Max Users: {0}", _
customSection.MaxUsers)
Console.WriteLine("Max Idle Time: {0}", _
customSection.MaxIdleTime)
End If
Catch err As ConfigurationErrorsException
Console.WriteLine(err.ToString())
End Try
End Sub
Shared Sub GetEnumerator()
Try
Dim config _
As System.Configuration.Configuration = _
ConfigurationManager.OpenExeConfiguration( _
ConfigurationUserLevel.None)
Dim sections _
As ConfigurationSectionCollection = _
config.Sections
Dim secEnum _
As IEnumerator = sections.GetEnumerator()
Dim i As Integer = 0
While secEnum.MoveNext()
Dim setionName _
As String = sections.GetKey(i)
Console.WriteLine( _
"Section name: {0}", setionName)
i += 1
End While
Catch err As ConfigurationErrorsException
Console.WriteLine(err.ToString())
End Try
End Sub
Shared Sub GetKeys()
Try
Dim config _
As System.Configuration.Configuration = _
ConfigurationManager.OpenExeConfiguration( _
ConfigurationUserLevel.None)
Dim sections _
As ConfigurationSectionCollection = _
config.Sections
Dim key As String
For Each key In sections.Keys
Console.WriteLine("Key value: {0}", key)
Next key
Catch err As ConfigurationErrorsException
Console.WriteLine(err.ToString())
End Try
End Sub
Shared Sub GetItems()
Try
Dim config _
As System.Configuration.Configuration = _
ConfigurationManager.OpenExeConfiguration( _
ConfigurationUserLevel.None)
Dim sections _
As ConfigurationSectionCollection = _
config.Sections
Dim section1 As ConfigurationSection = _
sections.Item("runtime")
Dim section2 As ConfigurationSection = _
sections.Item(0)
Console.WriteLine("Section1: {0}", _
section1.SectionInformation.Name)
Console.WriteLine("Section2: {0}", _
section2.SectionInformation.Name)
Catch err As ConfigurationErrorsException
Console.WriteLine(err.ToString())
End Try
End Sub
Shared Sub Remove()
Try
Dim config _
As System.Configuration.Configuration = _
ConfigurationManager.OpenExeConfiguration( _
ConfigurationUserLevel.None)
Dim customSection As CustomSection = _
config.GetSection("CustomSection")
If Not (customSection Is Nothing) Then
config.Sections.Remove("CustomSection")
customSection.SectionInformation.ForceSave = True
config.Save(ConfigurationSaveMode.Full)
Else
Console.WriteLine( _
"CustomSection does not exists.")
End If
Catch err As ConfigurationErrorsException
Console.WriteLine(err.ToString())
End Try
End Sub
Shared Sub AddSection()
Try
Dim config _
As System.Configuration.Configuration = _
ConfigurationManager.OpenExeConfiguration( _
ConfigurationUserLevel.None)
Dim customSection _
As New CustomSection()
Dim index As String = _
config.Sections.Count.ToString()
customSection.FileName = _
"newFile" + index + ".txt"
Dim sectionName As String = _
"CustomSection" + index
Dim ts As New TimeSpan(0, 15, 0)
customSection.MaxIdleTime = ts
customSection.MaxUsers = 100
config.Sections.Add(sectionName, customSection)
customSection.SectionInformation.ForceSave = True
config.Save(ConfigurationSaveMode.Full)
Catch err As ConfigurationErrorsException
Console.WriteLine(err.ToString())
End Try
End Sub
' Exercise the collection.
' Uncomment the function you want to exercise.
' Start with CreateSection().
Public Overloads Shared Sub Main(ByVal args() As String)
CreateSection()
' AddSection()
' GetSection()
' GetEnumerator()
' GetAllKeys()
' GetKeys()
GetItems()
' Clear()
' Remove()
End Sub
End Class