本文整理汇总了VB.NET中System.Reflection.Emit.FieldBuilder.SetMarshal方法的典型用法代码示例。如果您正苦于以下问题：VB.NET FieldBuilder.SetMarshal方法的具体用法？VB.NET FieldBuilder.SetMarshal怎么用？VB.NET FieldBuilder.SetMarshal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类System.Reflection.Emit.FieldBuilder的用法示例。
在下文中一共展示了FieldBuilder.SetMarshal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: FieldBuilder_Sample
' 导入命名空间
Imports System.Runtime.InteropServices
Imports System.Threading
Imports System.Reflection
Imports System.Reflection.Emit
Imports System.Security.Permissions
Imports System.Runtime.CompilerServices
Public Class FieldBuilder_Sample
Public Shared Function CreateType(ByVal currentDomain As AppDomain) As Type
' Create an assembly.
Dim myAssemblyName As New AssemblyName()
myAssemblyName.Name = "DynamicAssembly"
Dim myAssembly As AssemblyBuilder = currentDomain.DefineDynamicAssembly(myAssemblyName, _
AssemblyBuilderAccess.RunAndSave)
' Create a dynamic module in Dynamic Assembly.
Dim myModuleBuilder As ModuleBuilder = myAssembly.DefineDynamicModule("MyModule", _
"MyModule.mod")
' Define a public class named "MyClass" in the assembly.
Dim myTypeBuilder As TypeBuilder = myModuleBuilder.DefineType("MyClass", _
TypeAttributes.Public)
Dim myTypeBuilder2 As TypeBuilder = myModuleBuilder.DefineType("MyClass2", _
TypeAttributes.Public Or TypeAttributes.BeforeFieldInit Or _
TypeAttributes.SequentialLayout Or TypeAttributes.AnsiClass Or TypeAttributes.Sealed)
Dim myFieldBuilder1 As FieldBuilder = myTypeBuilder2.DefineField("myBytes1", _
GetType(Byte), FieldAttributes.Public)
Dim myFieldBuilder2 As FieldBuilder = myTypeBuilder2.DefineField("myBytes2", _
GetType(Byte), FieldAttributes.Public)
Dim myFieldBuilder3 As FieldBuilder = myTypeBuilder2.DefineField("myErrorCode", _
GetType(Short), FieldAttributes.Public)
Dim myFieldBuilder4 As FieldBuilder = myTypeBuilder2.DefineField("myReserved1", _
GetType(Short), FieldAttributes.Public)
Dim myFieldBuilder5 As FieldBuilder = myTypeBuilder2.DefineField("myReserved2", _
GetType(Short), FieldAttributes.Public)
Dim myFieldBuilder6 As FieldBuilder = myTypeBuilder2.DefineField("myPathName", _
GetType(Char()), FieldAttributes.Public)
myFieldBuilder6.SetMarshal(UnmanagedMarshal.DefineByValArray(128))
myFieldBuilder6.SetOffset(4)
Dim myType1 As Type = myTypeBuilder2.CreateType()
' Create the PInvoke method for 'OpenFile' method of 'Kernel32.dll'.
Dim myParameters As Type() = {GetType(String), myType1, GetType(System.UInt32)}
Dim myMethodBuilder As MethodBuilder = myTypeBuilder.DefinePInvokeMethod("OpenFile", _
"kernel32.dll", MethodAttributes.Public Or MethodAttributes.Static Or _
MethodAttributes.HideBySig, CallingConventions.Standard, GetType(IntPtr), _
myParameters, CallingConvention.Winapi, CharSet.None)
Dim myAttributeType As Type = GetType(MethodImplAttribute)
Dim myConstructorInfo As ConstructorInfo = myAttributeType.GetConstructor(New Type(0) _
{GetType(MethodImplOptions)})
Dim myAttributeBuilder As New CustomAttributeBuilder(myConstructorInfo, _
New Object() {MethodImplOptions.PreserveSig})
myMethodBuilder.SetCustomAttribute(myAttributeBuilder)
Dim myParameterBuilder2 As ParameterBuilder = myMethodBuilder.DefineParameter(2, _
ParameterAttributes.Out, "myClass2")
Dim myType As Type = myTypeBuilder.CreateType()
myAssembly.Save("EmittedAssembly.dll")
Return myType
End Function 'CreateType
<PermissionSetAttribute(SecurityAction.Demand, Name:="FullTrust")> _
Public Shared Sub Main()
Try
Dim myType As Type = CreateType(Thread.GetDomain())
Dim myClass2 As Type = myType.Module.GetType("MyClass2")
Dim myParam2 As Object = Activator.CreateInstance(myClass2)
Dim myUint As System.UInt32
myUint.Parse("800")
Dim myArgs As Object() = {"MyFile.Txt", myParam2, myUint}
Dim myObject As Object = myType.InvokeMember("OpenFile", _
BindingFlags.Public Or BindingFlags.InvokeMethod Or _
BindingFlags.Static, Nothing, Nothing, myArgs)
Console.WriteLine("MyClass.OpenFile method returned: '{0}'", myObject)
Catch e As Exception
Console.WriteLine("Exception Caught: " & e.Message)
End Try
End Sub
End Class