AppDomain.TypeResolve 이벤트

정의

네임스페이스:

System

어셈블리:

System.Runtime.dll

Source:

AppDomain.cs

형식을 확인하지 못할 경우 발생합니다.

public:
 event ResolveEventHandler ^ TypeResolve;

public event ResolveEventHandler? TypeResolve;

member this.TypeResolve : ResolveEventHandler 

Public Custom Event TypeResolve As ResolveEventHandler 

이벤트 유형

ResolveEventHandler

예제

다음 샘플에서는 이벤트를 보여 줍니다 TypeResolve .

이 코드 예제를 실행 하려면 정규화 된 어셈블리 이름을 제공 해야 합니다. 참조 된 정규화 된 어셈블리 이름을 가져오는 방법에 대 한 내용은 어셈블리 이름합니다.

#using <System.dll>
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>

using namespace System;
using namespace System::Reflection;
using namespace System::Reflection::Emit;

ref class Test
{
private:
    static Assembly^ HandleTypeResolve(Object^ sender, ResolveEventArgs^ args) 
    {
        Console::WriteLine("TypeResolve event handler.");

        // Save the dynamic assembly, and then load it using its
        // display name. Return the loaded assembly.
        //
        ab->Save(moduleName);
        return Assembly::Load(ab->FullName); 
    }

    // For this code example, the following information needs to be
    // available to both Demo and the HandleTypeResolve event
    // handler:
    static AssemblyBuilder^ ab;
    static String^ moduleName;

public:
    static void Demo() 
    {
        AppDomain^ currDom = AppDomain::CurrentDomain;

        // Create a dynamic assembly with one module, to be saved to 
        // disk (AssemblyBuilderAccess::Save).
        // 
        AssemblyName^ aName = gcnew AssemblyName();
        aName->Name = "Transient";
        moduleName = aName->Name + ".dll";
        ab = currDom->DefineDynamicAssembly(aName,
            AssemblyBuilderAccess::Save);
        ModuleBuilder^ mb = ab->DefineDynamicModule(aName->Name, moduleName);

        // The dynamic assembly has just one dummy type, to demonstrate
        // type resolution.
        TypeBuilder^ tb = mb->DefineType("Example");
        tb->CreateType();


        // First, try to load the type without saving the dynamic 
        // assembly and without hooking up the TypeResolve event. The
        // type cannot be loaded.
        try
        {
            Type^ temp = Type::GetType("Example", true);
            Console::WriteLine("Loaded type {0}.", temp);
        }
        catch (TypeLoadException^)
        {
            Console::WriteLine("Loader could not resolve the type.");
        }

        // Hook up the TypeResolve event.
        //      
        currDom->TypeResolve += 
            gcnew ResolveEventHandler(HandleTypeResolve);

        // Now try to load the type again. The TypeResolve event is 
        // raised, the dynamic assembly is saved, and the dummy type is
        // loaded successfully. Display it to the console, and create
        // an instance.
        Type^ t = Type::GetType("Example", true);
        Console::WriteLine("Loaded type \"{0}\".", t);
        Object^ o = Activator::CreateInstance(t);
    }
};

void main()
{
    Test::Demo();
}

/* This code example produces the following output:

Loader could not resolve the type.
TypeResolve event handler.
Loaded type "Example".
 */

using System;
using System.Reflection;
using System.Reflection.Emit;

class Test
{
    // For this code example, the following information needs to be
    // available to both Main and the HandleTypeResolve event
    // handler:
    private static AssemblyBuilder ab;
    private static string moduleName;

    public static void Main()
    {
        AppDomain currDom = AppDomain.CurrentDomain;

        // Create a dynamic assembly with one module, to be saved to
        // disk (AssemblyBuilderAccess.Save).
        //
        AssemblyName aName = new AssemblyName();
        aName.Name = "Transient";
        moduleName = aName.Name + ".dll";
        ab = currDom.DefineDynamicAssembly(aName,
            AssemblyBuilderAccess.Save);
        ModuleBuilder mb = ab.DefineDynamicModule(aName.Name, moduleName);

        // The dynamic assembly has just one dummy type, to demonstrate
        // type resolution.
        TypeBuilder tb = mb.DefineType("Example");
        tb.CreateType();

        // First, try to load the type without saving the dynamic
        // assembly and without hooking up the TypeResolve event. The
        // type cannot be loaded.
        try
        {
            Type temp = Type.GetType("Example", true);
            Console.WriteLine("Loaded type {0}.", temp);
        }
        catch (TypeLoadException)
        {
            Console.WriteLine("Loader could not resolve the type.");
        }

        // Hook up the TypeResolve event.
        //
        currDom.TypeResolve +=
            new ResolveEventHandler(HandleTypeResolve);

        // Now try to load the type again. The TypeResolve event is
        // raised, the dynamic assembly is saved, and the dummy type is
        // loaded successfully. Display it to the console, and create
        // an instance.
        Type t = Type.GetType("Example", true);
        Console.WriteLine("Loaded type \"{0}\".", t);
        Object o = Activator.CreateInstance(t);
    }

    static Assembly HandleTypeResolve(object sender, ResolveEventArgs args)
    {
        Console.WriteLine("TypeResolve event handler.");

        // Save the dynamic assembly, and then load it using its
        // display name. Return the loaded assembly.
        //
        ab.Save(moduleName);
        return Assembly.Load(ab.FullName);
    }
}

/* This code example produces the following output:

Loader could not resolve the type.
TypeResolve event handler.
Loaded type "Example".
 */

open System
open System.Reflection
open System.Reflection.Emit

let currDom = AppDomain.CurrentDomain

// Create a dynamic assembly with one module, to be saved to
// disk (AssemblyBuilderAccess.Save).
//
let aName = AssemblyName()
aName.Name <- "Transient"
let moduleName = aName.Name + ".dll"
let ab = currDom.DefineDynamicAssembly(aName, AssemblyBuilderAccess.Save)

let handleTypeResolve _ _ =
    printfn "TypeResolve event handler."

    // Save the dynamic assembly, and then load it using its
    // display name. Return the loaded assembly.
    ab.Save moduleName
    Assembly.Load ab.FullName

let mb = ab.DefineDynamicModule(aName.Name, moduleName)

// The dynamic assembly has just one dummy type, to demonstrate
// type resolution.
let tb = mb.DefineType "Example"
tb.CreateType() |> ignore

// First, try to load the type without saving the dynamic
// assembly and without hooking up the TypeResolve event. The
// type cannot be loaded.
try
    let temp = Type.GetType("Example", true)
    printfn $"Loaded type {temp}."
with :? TypeLoadException ->
    printfn "Loader could not resolve the type."

// Hook up the TypeResolve event.
//
currDom.add_TypeResolve(ResolveEventHandler handleTypeResolve)

// Now try to load the type again. The TypeResolve event is
// raised, the dynamic assembly is saved, and the dummy type is
// loaded successfully. Display it to the console, and create
// an instance.
let t = Type.GetType("Example", true)
printfn $"Loaded type \"{t}\"."
let o = Activator.CreateInstance t

(* This code example produces the following output:

Loader could not resolve the type.
TypeResolve event handler.
Loaded type "Example".
 *)

Option Strict On
Option Explicit On

Imports System.Reflection
Imports System.Reflection.Emit

Module Test

    ' For this code example, the following information needs to be
    ' available to both Main and the HandleTypeResolve event
    ' handler:
    Private ab As AssemblyBuilder
    Private moduleName As String

    Sub Main() 
    
        Dim currDom As AppDomain = AppDomain.CurrentDomain

        ' Create a dynamic assembly with one module, to be saved to 
        ' disk (AssemblyBuilderAccess.Save).
        ' 
        Dim aName As AssemblyName = new AssemblyName()
        aName.Name = "Transient"
        moduleName = aName.Name + ".dll"
        ab = currDom.DefineDynamicAssembly(aName, _
            AssemblyBuilderAccess.Save)
        Dim mb As ModuleBuilder = _
            ab.DefineDynamicModule(aName.Name, moduleName)

        ' The dynamic assembly has just one dummy type, to demonstrate
        ' type resolution.
        Dim tb As TypeBuilder = mb.DefineType("Example")
        tb.CreateType()


        ' First, try to load the type without saving the dynamic 
        ' assembly and without hooking up the TypeResolve event. The
        ' type cannot be loaded.
        Try
            Dim temp As Type = Type.GetType("Example", true)
            Console.WriteLine("Loaded type {0}.", temp)
        Catch ex As TypeLoadException
            Console.WriteLine("Loader could not resolve the type.")
        End Try

        ' Hook up the TypeResolve event.
        '      
        AddHandler currDom.TypeResolve, AddressOf HandleTypeResolve

        ' Now try to load the type again. The TypeResolve event is 
        ' raised, the dynamic assembly is saved, and the dummy type is
        ' loaded successfully. Display it to the console, and create
        ' an instance.
        Dim t As Type = Type.GetType("Example", true)
        Console.WriteLine("Loaded type ""{0}"".", t)
        Dim o As Object = Activator.CreateInstance(t)
    End Sub

    Private Function HandleTypeResolve(ByVal sender As Object, _
        ByVal e As ResolveEventArgs) As [Assembly]
    
        Console.WriteLine("TypeResolve event handler.")

        ' Save the dynamic assembly, and then load it using its
        ' display name. Return the loaded assembly.
        '
        ab.Save(moduleName)
        Return [Assembly].Load(ab.FullName) 
    End Function
End Module

' This code example produces the following output:
'
'Loader could not resolve the type.
'TypeResolve event handler.
'Loaded type "Example".
'

설명

이 TypeResolve 이벤트는 공용 언어 런타임이 요청된 형식을 만들 수 있는 어셈블리를 확인할 수 없는 경우에 발생합니다. 이 문제는 형식이 동적 어셈블리에 정의되어 있거나 형식이 동적 어셈블리에 정의되어 있지 않지만 런타임에서 형식이 정의된 어셈블리를 모르는 경우에 발생할 수 있습니다. 후자의 상황은 가 어셈블리 이름으로 정규화되지 않은 형식 이름으로 호출되는 경우에 Type.GetType 발생할 수 있습니다.

이 이벤트의 은 ResolveEventHandler 형식을 찾아서 만들 수 있습니다.

그러나 런타임이 TypeResolve 특정 어셈블리에서 형식을 찾을 수 없다는 것을 알고 있으면 이벤트가 발생하지 않습니다. 예를 들어 런타임은 형식을 정적 어셈블리에 동적으로 추가할 수 없다는 것을 알고 있으므로 정적 어셈블리에서 형식을 찾을 수 없는 경우 이 이벤트가 발생하지 않습니다.

.NET Framework 4부터 속성에는 ResolveEventArgs.RequestingAssembly 형식을 요청한 어셈블리가 포함됩니다. 자세한 내용은 ResolveEventArgs.RequestingAssembly를 참조하세요.

이 이벤트에 대한 이벤트 처리기를 등록하려면 필요한 권한이 있거나 이 SecurityException throw되어야 합니다.

이벤트 처리에 대한 자세한 내용은 이벤트 처리 및 발생 을 참조하십시오.

추가 정보

• RequestingAssembly