本文整理汇总了VB.NET中System.Reflection.Emit.CustomAttributeBuilder类的典型用法代码示例。如果您正苦于以下问题：VB.NET CustomAttributeBuilder类的具体用法？VB.NET CustomAttributeBuilder怎么用？VB.NET CustomAttributeBuilder使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了CustomAttributeBuilder类的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: ClassCreator
' 导入命名空间
Imports System.Threading
Imports System.Reflection
Imports System.Reflection.Emit
_
' We will apply this custom attribute to our dynamic type.
Public Class ClassCreator
Inherits Attribute
Private creator As String
Public ReadOnly Property GetCreator() As String
Get
Return creator
End Get
End Property
Public Sub New(name As String)
Me.creator = name
End Sub
End Class
_
' We will apply this dynamic attribute to our dynamic method.
Public Class DateLastUpdated
Inherits Attribute
Private dateUpdated As String
Public ReadOnly Property GetDateUpdated() As String
Get
Return dateUpdated
End Get
End Property
Public Sub New(theDate As String)
Me.dateUpdated = theDate
End Sub
End Class
_
Class MethodBuilderCustomAttributesDemo
Public Shared Function BuildTypeWithCustomAttributesOnMethod() As Type
Dim currentDomain As AppDomain = Thread.GetDomain()
Dim myAsmName As New AssemblyName()
myAsmName.Name = "MyAssembly"
Dim myAsmBuilder As AssemblyBuilder = currentDomain.DefineDynamicAssembly(myAsmName, _
AssemblyBuilderAccess.Run)
Dim myModBuilder As ModuleBuilder = myAsmBuilder.DefineDynamicModule("MyModule")
' First, we'll build a type with a custom attribute attached.
Dim myTypeBuilder As TypeBuilder = myModBuilder.DefineType("MyType", _
TypeAttributes.Public)
Dim ctorParams() As Type = {GetType(String)}
Dim classCtorInfo As ConstructorInfo = GetType(ClassCreator).GetConstructor(ctorParams)
Dim myCABuilder As New CustomAttributeBuilder(classCtorInfo, _
New Object() {"Joe Programmer"})
myTypeBuilder.SetCustomAttribute(myCABuilder)
' Now, let's build a method and add a custom attribute to it.
Dim myMethodBuilder As MethodBuilder = myTypeBuilder.DefineMethod("HelloWorld", _
MethodAttributes.Public, Nothing, New Type() {})
ctorParams = New Type() {GetType(String)}
classCtorInfo = GetType(DateLastUpdated).GetConstructor(ctorParams)
Dim myCABuilder2 As New CustomAttributeBuilder(classCtorInfo, _
New Object() {DateTime.Now.ToString()})
myMethodBuilder.SetCustomAttribute(myCABuilder2)
Dim myIL As ILGenerator = myMethodBuilder.GetILGenerator()
myIL.EmitWriteLine("Hello, world!")
myIL.Emit(OpCodes.Ret)
Return myTypeBuilder.CreateType()
End Function 'BuildTypeWithCustomAttributesOnMethod
Public Shared Sub Main()
Dim myType As Type = BuildTypeWithCustomAttributesOnMethod()
Dim myInstance As Object = Activator.CreateInstance(myType)
Dim customAttrs As Object() = myType.GetCustomAttributes(True)
Console.WriteLine("Custom Attributes for Type 'MyType':")
Dim attrVal As Object = Nothing
Dim customAttr As Object
For Each customAttr In customAttrs
attrVal = GetType(ClassCreator).InvokeMember("GetCreator", _
BindingFlags.GetProperty, _
Nothing, customAttr, New Object() {})
Console.WriteLine("-- Attribute: [{0} = ""{1}""]", customAttr, attrVal)
Next customAttr
Console.WriteLine("Custom Attributes for Method 'HelloWorld()' in 'MyType':")
customAttrs = myType.GetMember("HelloWorld")(0).GetCustomAttributes(True)
For Each customAttr In customAttrs
attrVal = GetType(DateLastUpdated).InvokeMember("GetDateUpdated", _
BindingFlags.GetProperty, _
Nothing, customAttr, New Object() {})
Console.WriteLine("-- Attribute: [{0} = ""{1}""]", customAttr, attrVal)
Next customAttr
Console.WriteLine("---")
Console.WriteLine(myType.InvokeMember("HelloWorld", BindingFlags.InvokeMethod, _
Nothing, myInstance, New Object() {}))
End Sub
End Class