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VB.NET Activator.CreateInstance方法代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了VB.NET中System.Activator.CreateInstance方法的典型用法代码示例。如果您正苦于以下问题:VB.NET Activator.CreateInstance方法的具体用法?VB.NET Activator.CreateInstance怎么用?VB.NET Activator.CreateInstance使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在System.Activator的用法示例。



在下文中一共展示了Activator.CreateInstance方法的8个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的VB.NET代码示例。

示例1: Example

Module Example
   Public Sub Main()
      ' Initialize array of characters from a to z.
      Dim chars(25) As Char 
      For ctr As Short = 0 To 25
         chars(ctr) = ChrW(ctr + &h0061)
      Next 
      Dim obj As Object = Activator.CreateInstance(GetType(String),
                                                   { chars, 13, 10 })
      Console.WriteLine(obj)                                          
   End Sub
End Module
开发者ID:VB.NET开发者,项目名称:System,代码行数:12,代码来源:Activator.CreateInstance

输出:

nopqrstuvw


示例2: Example

Module Example
   Public Sub Main()
      Dim characters() As Char = { "a"c, "b"c, "c"c, "d"c, "e"c, "f"c }
      Dim arguments()() As Object = new Object(2)() { New Object() { characters },
                                                      New Object() { characters, 1, 4 },
                                                      New Object() { characters(1), 20 } }

      For ctr As Integer = 0 To arguments.GetUpperBound(0)
         Dim args() As Object = arguments(ctr)
         Dim result As Object = Activator.CreateInstance(GetType(String), args)
         Console.WriteLine("{0}: {1}", result.GetType().Name, result)
      Next
   End Sub
End Module
开发者ID:VB.NET开发者,项目名称:System,代码行数:14,代码来源:Activator.CreateInstance

输出:

String: abcdef
String: bcde
String: bbbbbbbbbbbbbbbbbbbb


示例3: New

Public Class Person
   Private _name As String
   
   Public Sub New()
   End Sub
   
   Public Sub New(name As String)
      Me._name = name
   End Sub
   
   Public Property Name As String
      Get
         Return Me._name
      End Get
      Set
         Me._name = value
      End Set
   End Property
   
   Public Overrides Function ToString() As String
      Return Me._name
   End Function
End Class
开发者ID:VB.NET开发者,项目名称:System,代码行数:23,代码来源:Activator.CreateInstance


示例4: Example

' 导入命名空间
Imports System.Runtime.Remoting

Module Example
   Public Sub Main()
      Dim handle As ObjectHandle = Activator.CreateInstance("PersonInfo", "Person")
      Dim p As Person = CType(handle.Unwrap(), Person)
      p.Name = "Samuel"
      Console.WriteLine(p)
   End Sub
End Module
开发者ID:VB.NET开发者,项目名称:System,代码行数:11,代码来源:Activator.CreateInstance

输出:

Samuel


示例5: Example

' 导入命名空间
Imports System.Reflection
Imports System.Runtime.Remoting

Module Example
   Public Sub Main()
      Dim handle As ObjectHandle = Activator.CreateInstance("PersonInfo", "Person")
      Dim p As Object = handle.Unwrap()
      Dim t As Type = p.GetType()
      Dim prop As PropertyInfo = t.GetProperty("Name")
      if Not prop Is Nothing Then
         prop.SetValue(p, "Samuel")
      End If   
      Dim method As MethodInfo = t.GetMethod("ToString")
      Dim retVal As Object = method.Invoke(p, Nothing) 
      If Not retVal Is Nothing Then
         Console.WriteLine(retVal)
      End If
   End Sub
End Module
开发者ID:VB.NET开发者,项目名称:System,代码行数:20,代码来源:Activator.CreateInstance

输出:

Samuel


示例6: DynamicInstanceList

Class DynamicInstanceList
    Private Shared instanceSpec As String = "System.EventArgs;System.Random;" + _
        "System.Exception;System.Object;System.Version"

    Public Shared Sub Main()
        Dim instances() As String = instanceSpec.Split(";")
        Dim instlist As Array = Array.CreateInstance(GetType(Object), instances.Length)
        Dim item As Object

        For i As Integer = 0 To instances.Length -1
            ' create the object from the specification string
            Console.WriteLine("Creating instance of: {0}", instances(i))
            item = Activator.CreateInstance(Type.GetType(instances(i)))
            instlist.SetValue(item, i)
        Next i
        Console.WriteLine(vbNewLine + "Objects and their default values:" + vbNewLine)
        For Each o As Object In instlist
            Console.WriteLine("Type:     {0}" + vbNewLine + "Value:    {1}" + _
                vbNewLine + "HashCode: {2}" + vbNewLine, _
                o.GetType().FullName, o.ToString(), o.GetHashCode())
        Next o
    End Sub
End Class

' This program will display output similar to the following:
'
' Creating instance of: System.EventArgs
' Creating instance of: System.Random
' Creating instance of: System.Exception
' Creating instance of: System.Object
' Creating instance of: System.Version
'
' Objects and their default values:
'
' Type:     System.EventArgs
' Value:    System.EventArgs
' HashCode: 46104728
'
' Type:     System.Random
' Value:    System.Random
' HashCode: 12289376
'
' Type:     System.Exception
' Value:    System.Exception: Exception of type 'System.Exception' was thrown.
' HashCode: 55530882
'
' Type:     System.Object
' Value:    System.Object
' HashCode: 30015890
'
' Type:     System.Version
' Value:    0.0
' HashCode: 1048575
开发者ID:VB.NET开发者,项目名称:System,代码行数:53,代码来源:Activator.CreateInstance


示例7: Factory

Public Shared Function Factory(Of T As New)() As T
    Return New T()
End Function
开发者ID:VB.NET开发者,项目名称:System,代码行数:3,代码来源:Activator.CreateInstance


示例8: Tester

imports System.Reflection
Imports System.Windows.Forms

Public Class Tester
    Public Shared Sub Main
      try
        dim strUrl as String = "http" & "://localhost/MultiFileAssyVB/vbDeploy.exe"
        dim a as [Assembly] = [Assembly].LoadFrom(strUrl)
        dim t as Type = a.GetType("Form1")
        dim o as Object = Activator.CreateInstance(t)
        dim frm as Form = CType(o, Form)
        frm.Show()
      catch ex as Exception
        Console.WriteLine(ex.ToString)

      End Try         
    End Sub
End Class
开发者ID:VB程序员,项目名称:System,代码行数:18,代码来源:Activator.CreateInstance



注:本文中的System.Activator.CreateInstance方法示例整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


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