本文整理匯總了VB.NET中System.Reflection.Emit.ConstructorBuilder.SetCustomAttribute方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET ConstructorBuilder.SetCustomAttribute方法的具體用法？VB.NET ConstructorBuilder.SetCustomAttribute怎麽用？VB.NET ConstructorBuilder.SetCustomAttribute使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Reflection.Emit.ConstructorBuilder的用法示例。
在下文中一共展示了ConstructorBuilder.SetCustomAttribute方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: MyAttribute
' 導入命名空間
Imports System.Threading
Imports System.Reflection
Imports System.Reflection.Emit
<AttributeUsage(AttributeTargets.All, AllowMultiple := False)> _
Public Class MyAttribute
Inherits Attribute
Public myString As String
Public myInteger As Integer
Public Sub New(myString As String, myInteger As Integer)
Me.myString = myString
Me.myInteger = myInteger
End Sub
End Class
Public Class MyConstructorBuilder
Public Shared Sub Main()
Dim myHelloworld As Type = MyCreateCallee(Thread.GetDomain())
Dim myConstructor As ConstructorInfo = myHelloworld.GetConstructor(New Type() _
{GetType(String)})
Dim myAttributes1 As Object() = myConstructor.GetCustomAttributes(True)
Console.WriteLine("MyAttribute custom attribute contains ")
Dim index As Integer
For index = 0 To myAttributes1.Length - 1
If TypeOf myAttributes1(index) Is MyAttribute Then
Console.WriteLine("The value of myString is : " + CType(myAttributes1(index), _
MyAttribute).myString)
Console.WriteLine("The value of myInteger is : " + CType(myAttributes1(index), _
MyAttribute).myInteger.ToString())
End If
Next index
End Sub
Private Shared Function MyCreateCallee(domain As AppDomain) As Type
Dim myAssemblyName As New AssemblyName()
myAssemblyName.Name = "EmittedAssembly"
' Define a dynamic assembly in the current application domain.
Dim myAssembly As AssemblyBuilder = domain.DefineDynamicAssembly _
(myAssemblyName, AssemblyBuilderAccess.Run)
' Define a dynamic module in this assembly.
Dim myModuleBuilder As ModuleBuilder = myAssembly.DefineDynamicModule("EmittedModule")
' Construct a 'TypeBuilder' given the name and attributes.
Dim myTypeBuilder As TypeBuilder = myModuleBuilder.DefineType _
("HelloWorld", TypeAttributes.Public)
' Define a constructor of the dynamic class.
Dim myConstructor As ConstructorBuilder = myTypeBuilder.DefineConstructor _
(MethodAttributes.Public, CallingConventions.Standard, New Type() {GetType(String)})
Dim myILGenerator As ILGenerator = myConstructor.GetILGenerator()
myILGenerator.Emit(OpCodes.Ldstr, "Constructor is invoked")
myILGenerator.Emit(OpCodes.Ldarg_1)
Dim myMethodInfo As MethodInfo = GetType(Console).GetMethod("WriteLine", New Type() _
{GetType(String)})
myILGenerator.Emit(OpCodes.Call, myMethodInfo)
myILGenerator.Emit(OpCodes.Ret)
Dim myType As Type = GetType(MyAttribute)
Dim myConstructorInfo As ConstructorInfo = myType.GetConstructor(New Type(1) _
{GetType(String), GetType(Integer)})
Dim attributeBuilder As New CustomAttributeBuilder _
(myConstructorInfo, New Object(1) {"Hello", 2})
Try
myConstructor.SetCustomAttribute(attributeBuilder)
Catch ex As ArgumentNullException
Console.WriteLine("The following exception has occurred : " + ex.Message)
Catch ex As Exception
Console.WriteLine("The following exception has occurred : " + ex.Message)
End Try
Return myTypeBuilder.CreateType()
End Function 'MyCreateCallee
End Class示例2: MyAttribute
' 導入命名空間
Imports System.Threading
Imports System.Reflection
Imports System.Reflection.Emit
<AttributeUsage(AttributeTargets.All, AllowMultiple := False)> _
Public Class MyAttribute
Inherits Attribute
Public myBoolean As Boolean
Public Sub New(myBoolean As Boolean)
Me.myBoolean = myBoolean
End Sub
End Class
Public Class MyConstructorBuilder
Public Shared Sub Main()
Dim myHelloworld As Type = MyCreateCallee(Thread.GetDomain())
Dim myConstructor As ConstructorInfo = myHelloworld.GetConstructor(New Type() _
{GetType(String)})
Dim myAttributes1 As Object() = myConstructor.GetCustomAttributes(True)
Console.WriteLine("MyAttribute custom attribute contains ")
Dim index As Integer
For index = 0 To myAttributes1.Length - 1
If TypeOf myAttributes1(index) Is MyAttribute Then
Console.WriteLine("myBoolean : " + _
CType(myAttributes1(index), MyAttribute).myBoolean.ToString())
End If
Next index
End Sub
Private Shared Function MyCreateCallee(domain As AppDomain) As Type
Dim myAssemblyName As New AssemblyName()
myAssemblyName.Name = "EmittedAssembly"
' Define a dynamic assembly in the current application domain.
Dim myAssembly As AssemblyBuilder = domain.DefineDynamicAssembly _
(myAssemblyName, AssemblyBuilderAccess.Run)
' Define a dynamic module in this assembly.
Dim myModuleBuilder As ModuleBuilder = myAssembly.DefineDynamicModule("EmittedModule")
' Construct a 'TypeBuilder' given the name and attributes.
Dim myTypeBuilder As TypeBuilder = myModuleBuilder.DefineType _
("HelloWorld", TypeAttributes.Public)
' Define a constructor of the dynamic class.
Dim myConstructor As ConstructorBuilder = myTypeBuilder.DefineConstructor _
(MethodAttributes.Public, CallingConventions.Standard, New Type() {GetType(String)})
Dim myILGenerator As ILGenerator = myConstructor.GetILGenerator()
myILGenerator.Emit(OpCodes.Ldstr, "Constructor is invoked")
myILGenerator.Emit(OpCodes.Ldarg_1)
Dim myMethodInfo As MethodInfo = GetType(Console).GetMethod("WriteLine", New Type() _
{GetType(String)})
myILGenerator.Emit(OpCodes.Call, myMethodInfo)
myILGenerator.Emit(OpCodes.Ret)
Dim myType As Type = GetType(MyAttribute)
Dim myConstructorInfo As ConstructorInfo = myType.GetConstructor(New Type() {GetType(Boolean)})
Try
myConstructor.SetCustomAttribute(myConstructorInfo, New Byte() {1, 0, 1})
Catch ex As ArgumentNullException
Console.WriteLine("The following exception has occurred : " + ex.Message)
Catch ex As Exception
Console.WriteLine("The following exception has occurred : " + ex.Message)
End Try
Return myTypeBuilder.CreateType()
End Function 'MyCreateCallee
End Class