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VB.NET MethodBuilder.CreateMethodBody方法代码示例

本文整理汇总了VB.NET中System.Reflection.Emit.MethodBuilder.CreateMethodBody方法的典型用法代码示例。如果您正苦于以下问题:VB.NET MethodBuilder.CreateMethodBody方法的具体用法?VB.NET MethodBuilder.CreateMethodBody怎么用?VB.NET MethodBuilder.CreateMethodBody使用的例子?那么, 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.Reflection.Emit.MethodBuilder的用法示例。


在下文中一共展示了MethodBuilder.CreateMethodBody方法的1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,您的评价将有助于系统推荐出更棒的VB.NET代码示例。

示例1: MethodBodyDemo

' 导入命名空间
Imports System.Threading
Imports System.Reflection
Imports System.Reflection.Emit

 _

Class MethodBodyDemo
   
   ' This class will demonstrate how to create a method body using 
   ' the MethodBuilder.CreateMethodBody(byte[], int) method.

   Public Shared Function BuildDynType() As Type
      
      Dim addType As Type = Nothing
      
      Dim currentDom As AppDomain = Thread.GetDomain()
      
      Dim myAsmName As New AssemblyName()
      myAsmName.Name = "MyDynamicAssembly"
      
      Dim myAsmBldr As AssemblyBuilder = currentDom.DefineDynamicAssembly(myAsmName, _
                         AssemblyBuilderAccess.RunAndSave)
      
      ' The dynamic assembly space has been created.  Next, create a module
      ' within it.  The type Point will be reflected into this module.
      Dim myModuleBldr As ModuleBuilder = myAsmBldr.DefineDynamicModule("MyModule")
      
      Dim myTypeBldr As TypeBuilder = myModuleBldr.DefineType("Adder")
      
      Dim myMthdBldr As MethodBuilder = myTypeBldr.DefineMethod("DoAdd", _
                    MethodAttributes.Public Or MethodAttributes.Static, _
                        GetType(Integer), _
                    New Type() {GetType(Integer), GetType(Integer)})

      ' Build the array of Bytes holding the MSIL instructions.

      Dim ILcodes() As Byte = {&H2, &H3, &H58, &H2A}

      ' 02h is the opcode for ldarg.0 
      ' 03h is the opcode for ldarg.1 
      ' 58h is the opcode for add     
      ' 2Ah is the opcode for ret     
      
      myMthdBldr.CreateMethodBody(ILcodes, ILcodes.Length)
      
      addType = myTypeBldr.CreateType()
      
      Return addType

   End Function 'BuildDynType
   
   
   Public Shared Sub Main()
      
      Dim myType As Type = BuildDynType()
      Console.WriteLine("---")
      Console.Write("Enter the first integer to add: ")
      Dim aVal As Integer = Convert.ToInt32(Console.ReadLine())
      
      Console.Write("Enter the second integer to add: ")
      Dim bVal As Integer = Convert.ToInt32(Console.ReadLine())
      
      Dim adderInst As Object = Activator.CreateInstance(myType, New Object() {})
      
      Console.WriteLine("The value of adding {0} to {1} is: {2}.", _
             aVal, bVal, _
             myType.InvokeMember("DoAdd", _
                          BindingFlags.InvokeMethod, _
                          Nothing, _
                          adderInst, _
                          New Object() {aVal, bVal}))

   End Sub

End Class
开发者ID:VB.NET开发者,项目名称:System.Reflection.Emit,代码行数:76,代码来源:MethodBuilder.CreateMethodBody


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