AssemblyBuilder.Saveとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

AssemblyBuilder.Save メソッド (String)

この動的アセンブリをディスクに保存します。

名前空間: System.Reflection.Emit
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

Public Sub Save ( _
    assemblyFileName As String _
)

Visual Basic (使用法)

Dim instance As AssemblyBuilder
Dim assemblyFileName As String

instance.Save(assemblyFileName)

public void Save (
    string assemblyFileName
)

C++

public:
void Save (
    String^ assemblyFileName
)

public void Save (
    String assemblyFileName
)

JScript

public function Save (
    assemblyFileName : String
)

パラメータ

assemblyFileName: アセンブリのファイル名。

例外

例外の種類	条件
ArgumentException	assemblyFileName の長さが 0 です。またはアセンブリに同じ名前で複数のモジュールリソースファイルがあります。またはアセンブリの保存先ディレクトリが無効です。または assemblyFileName が単純ファイル名ではありません (ディレクトリコンポーネントまたはドライブコンポーネントがあるなど)。または、バージョン情報リソースも含めて複数のアンマネージリソースがこのアセンブリで定義されています。または AssemblyCultureAttribute の CultureInfo 文字列が無効な文字列で、このメソッドを呼び出す前に DefineVersionInfoResource が呼び出されました。
ArgumentNullException	assemblyFileName が null 参照 (Visual Basic では Nothing) です。
InvalidOperationException	このアセンブリは既に保存されています。またはこのアセンブリのアクセスモードが RunAssemblyBuilderAccess です。
IOException	保存中に出力エラーが発生しました。
NotSupportedException	ディスクに書き込むアセンブリのモジュール内のいずれかの型に対して CreateType が呼び出されていません。

解説

このメソッドは、この動的アセンブリで定義されているすべての非遷移動的モジュールを保存します。遷移動的モジュールは保存されません。アセンブリファイル名は、いずれかのモジュール名と同じでもかまいません。この場合、アセンブリ情報はそのモジュールに格納されます。assemblyFileName は、アセンブリに格納されているすべてのモジュール名とも異なっていてもかまいません。この場合、アセンブリはスタンドアロンとして格納されます。

DefineResource を使用して取得した ResourceWriter ごとに、このメソッドは .resources ファイルを書き込み、Close を呼び出してストリームを閉じます。

assemblyFileName は、ドライブコンポーネントまたはディレクトリコンポーネントを含まない単純ファイル名にする必要があります。特定のディレクトリにアセンブリを作成するには、作成先ディレクトリ引数をとる DefineDynamicAssembly メソッドのいずれかを使用します。

.NET Framework Version 2.0 では、Save メソッドのこのオーバーロードは、Save(String,PortableExecutableKinds,ImageFileMachine) メソッドオーバーロードを、portableExecutableKind パラメータで ILOnly、imageFileMachine パラメータで I386 を指定して呼び出すことと同じです。

使用例

次のコード例は、動的なアセンブリを作成し、Save を使用してローカルディスクに永続化する方法を示しています。

Visual Basic

Imports System
Imports System.Text
Imports System.Threading
Imports System.Reflection
Imports System.Reflection.Emit

 _

' The Point class is the class we will reflect on and copy into our
' dynamic assembly. The public static function PointMain() will be used
' as our entry point.
'
' We are constructing the type seen here dynamically, and will write
 it
' out into a .exe file for later execution from the command-line.
' --- 
' Class Point
'    
'    Private x As Integer
'    Private y As Integer
'    
'    
'    Public Sub New(ix As Integer, iy As Integer)
'       
'       Me.x = ix
'       Me.y = iy
'    End Sub 'New
'     
'    
'    Public Function DotProduct(p As Point) As Integer
'       
'       Return Me.x * p.x + Me.y * p.y
'    End Function 'DotProduct
'     
'    
'    Public Shared Sub Main()
'       
'       Console.Write("Enter the 'x' value for point 1: ")
'       Dim x1 As Integer = Convert.ToInt32(Console.ReadLine())
'       
'       Console.Write("Enter the 'y' value for point 1: ")
'       Dim y1 As Integer = Convert.ToInt32(Console.ReadLine())
'       
'       Console.Write("Enter the 'x' value for point 2: ")
'       Dim x2 As Integer = Convert.ToInt32(Console.ReadLine())
'       
'       Console.Write("Enter the 'y' value for point 2: ")
'       Dim y2 As Integer = Convert.ToInt32(Console.ReadLine())
'       
'       Dim p1 As New Point(x1, y1)
'       Dim p2 As New Point(x2, y2)
'       
'       Console.WriteLine("({0}, {1}) . ({2}, {3}) = {4}.",
 x1, y1, x2, y2, p1.DotProduct(p2))
'    End Sub 'Main
' End Class 'Point 
' ---
Class AssemblyBuilderDemo
   
   
   Public Shared Function
 BuildDynAssembly() As Type
      
      Dim pointType As Type = Nothing
      
      Dim currentDom As AppDomain = Thread.GetDomain()
      
      Console.Write("Please enter a name for your new assembly:
 ")
      Dim asmFileNameBldr As New
 StringBuilder()
      asmFileNameBldr.Append(Console.ReadLine())
      asmFileNameBldr.Append(".exe")
      Dim asmFileName As String
 = asmFileNameBldr.ToString()
      
      Dim myAsmName As New
 AssemblyName()
      myAsmName.Name = "MyDynamicAssembly"
      
      Dim myAsmBldr As AssemblyBuilder = currentDom.DefineDynamicAssembly(myAsmName,
 _
                     AssemblyBuilderAccess.RunAndSave)
      
      ' We've created a dynamic assembly space - now, we need to create
 a module
      ' within it to reflect the type Point into.
      Dim myModuleBldr As ModuleBuilder = myAsmBldr.DefineDynamicModule(asmFileName,
 _
                                    asmFileName)
      
      Dim myTypeBldr As TypeBuilder = myModuleBldr.DefineType("Point")
      
      Dim xField As FieldBuilder = myTypeBldr.DefineField("x",
 GetType(Integer), _
                                  FieldAttributes.Private)
      Dim yField As FieldBuilder = myTypeBldr.DefineField("y",
 GetType(Integer), _
                               FieldAttributes.Private)
      
      ' Build the constructor.
      Dim objType As Type = Type.GetType("System.Object")
      Dim objCtor As ConstructorInfo = objType.GetConstructor(New
 Type() {})
      
      Dim ctorParams() As Type = {GetType(Integer),
 GetType(Integer)}
      Dim pointCtor As ConstructorBuilder =
 myTypeBldr.DefineConstructor( _
                        MethodAttributes.Public, _
                        CallingConventions.Standard, _
                        ctorParams)
      Dim ctorIL As ILGenerator = pointCtor.GetILGenerator()
      ctorIL.Emit(OpCodes.Ldarg_0)
      ctorIL.Emit(OpCodes.Call, objCtor)
      ctorIL.Emit(OpCodes.Ldarg_0)
      ctorIL.Emit(OpCodes.Ldarg_1)
      ctorIL.Emit(OpCodes.Stfld, xField)
      ctorIL.Emit(OpCodes.Ldarg_0)
      ctorIL.Emit(OpCodes.Ldarg_2)
      ctorIL.Emit(OpCodes.Stfld, yField)
      ctorIL.Emit(OpCodes.Ret)
      
      ' Build the DotProduct method.
      Console.WriteLine("Constructor built.")
      
      Dim pointDPBldr As MethodBuilder = myTypeBldr.DefineMethod("DotProduct",
 _
                                 MethodAttributes.Public, _
                                 GetType(Integer),
 _
                                 New Type(0) {myTypeBldr})
      
      Dim dpIL As ILGenerator = pointDPBldr.GetILGenerator()
      dpIL.Emit(OpCodes.Ldarg_0)
      dpIL.Emit(OpCodes.Ldfld, xField)
      dpIL.Emit(OpCodes.Ldarg_1)
      dpIL.Emit(OpCodes.Ldfld, xField)
      dpIL.Emit(OpCodes.Mul_Ovf_Un)
      dpIL.Emit(OpCodes.Ldarg_0)
      dpIL.Emit(OpCodes.Ldfld, yField)
      dpIL.Emit(OpCodes.Ldarg_1)
      dpIL.Emit(OpCodes.Ldfld, yField)
      dpIL.Emit(OpCodes.Mul_Ovf_Un)
      dpIL.Emit(OpCodes.Add_Ovf_Un)
      dpIL.Emit(OpCodes.Ret)
      
      ' Build the PointMain method.
      Console.WriteLine("DotProduct built.")
      
      Dim pointMainBldr As MethodBuilder =
 myTypeBldr.DefineMethod("PointMain", _
                              MethodAttributes.Public Or _
                              MethodAttributes.Static, _
                              Nothing, Nothing)
      pointMainBldr.InitLocals = True
      Dim pmIL As ILGenerator = pointMainBldr.GetILGenerator()
      
      ' We have four methods that we wish to call, and must represent
 as
      ' MethodInfo tokens:
      ' - Sub Console.WriteLine(string)
      ' - Function Console.ReadLine() As String
      ' - Function Convert.Int32(string) As Int
      ' - Sub Console.WriteLine(string, object[])

      Dim writeMI As MethodInfo = GetType(Console).GetMethod("Write",
 _
                               New Type(0) {GetType(String)})
 
                                     
      Dim readLineMI As MethodInfo = GetType(Console).GetMethod("ReadLine",
 _
                              New Type() {})
      Dim convertInt32MI As MethodInfo = GetType(Convert).GetMethod("ToInt32",
 _
                              New Type(0) {GetType(String)})
      Dim wlParams() As Type = {GetType(String),
 GetType(Object())}
      Dim writeLineMI As MethodInfo = GetType(Console).GetMethod("WriteLine",
 wlParams)
      
      ' Although we could just refer to the local variables by
      ' index (short ints for Ldloc/Stloc, bytes for LdLoc_S/Stloc_S)
,
      ' this time, we'll use LocalBuilders for clarity and to
      ' demonstrate their usage and syntax.

      Dim x1LB As LocalBuilder = pmIL.DeclareLocal(GetType(Integer))
      Dim y1LB As LocalBuilder = pmIL.DeclareLocal(GetType(Integer))
      Dim x2LB As LocalBuilder = pmIL.DeclareLocal(GetType(Integer))
      Dim y2LB As LocalBuilder = pmIL.DeclareLocal(GetType(Integer))
      Dim point1LB As LocalBuilder = pmIL.DeclareLocal(myTypeBldr)
      Dim point2LB As LocalBuilder = pmIL.DeclareLocal(myTypeBldr)
      Dim tempObjArrLB As LocalBuilder = pmIL.DeclareLocal(GetType(Object()))
      
      pmIL.Emit(OpCodes.Ldstr, "Enter the 'x' value for point 1:
 ")
      pmIL.EmitCall(OpCodes.Call, writeMI, Nothing)
      pmIL.EmitCall(OpCodes.Call, readLineMI, Nothing)
      pmIL.EmitCall(OpCodes.Call, convertInt32MI, Nothing)
      pmIL.Emit(OpCodes.Stloc, x1LB)
      
      pmIL.Emit(OpCodes.Ldstr, "Enter the 'y' value for point 1:
 ")
      pmIL.EmitCall(OpCodes.Call, writeMI, Nothing)
      pmIL.EmitCall(OpCodes.Call, readLineMI, Nothing)
      pmIL.EmitCall(OpCodes.Call, convertInt32MI, Nothing)
      pmIL.Emit(OpCodes.Stloc, y1LB)
      
      pmIL.Emit(OpCodes.Ldstr, "Enter the 'x' value for point 2:
 ")
      pmIL.EmitCall(OpCodes.Call, writeMI, Nothing)
      pmIL.EmitCall(OpCodes.Call, readLineMI, Nothing)
      pmIL.EmitCall(OpCodes.Call, convertInt32MI, Nothing)
      pmIL.Emit(OpCodes.Stloc, x2LB)
      
      pmIL.Emit(OpCodes.Ldstr, "Enter the 'y' value for point 2:
 ")
      pmIL.EmitCall(OpCodes.Call, writeMI, Nothing)
      pmIL.EmitCall(OpCodes.Call, readLineMI, Nothing)
      pmIL.EmitCall(OpCodes.Call, convertInt32MI, Nothing)
      pmIL.Emit(OpCodes.Stloc, y2LB)
      
      pmIL.Emit(OpCodes.Ldloc, x1LB)
      pmIL.Emit(OpCodes.Ldloc, y1LB)
      pmIL.Emit(OpCodes.Newobj, pointCtor)
      pmIL.Emit(OpCodes.Stloc, point1LB)
      
      pmIL.Emit(OpCodes.Ldloc, x2LB)
      pmIL.Emit(OpCodes.Ldloc, y2LB)
      pmIL.Emit(OpCodes.Newobj, pointCtor)
      pmIL.Emit(OpCodes.Stloc, point2LB)
      
      pmIL.Emit(OpCodes.Ldstr, "({0}, {1}) . ({2}, {3}) = {4}.")
      pmIL.Emit(OpCodes.Ldc_I4_5)
      pmIL.Emit(OpCodes.Newarr, GetType([Object]))
      pmIL.Emit(OpCodes.Stloc, tempObjArrLB)
      
      pmIL.Emit(OpCodes.Ldloc, tempObjArrLB)
      pmIL.Emit(OpCodes.Ldc_I4_0)
      pmIL.Emit(OpCodes.Ldloc, x1LB)
      pmIL.Emit(OpCodes.Box, GetType(Integer))
      pmIL.Emit(OpCodes.Stelem_Ref)
      
      pmIL.Emit(OpCodes.Ldloc, tempObjArrLB)
      pmIL.Emit(OpCodes.Ldc_I4_1)
      pmIL.Emit(OpCodes.Ldloc, y1LB)
      pmIL.Emit(OpCodes.Box, GetType(Integer))
      pmIL.Emit(OpCodes.Stelem_Ref)
      
      pmIL.Emit(OpCodes.Ldloc, tempObjArrLB)
      pmIL.Emit(OpCodes.Ldc_I4_2)
      pmIL.Emit(OpCodes.Ldloc, x2LB)
      pmIL.Emit(OpCodes.Box, GetType(Integer))
      pmIL.Emit(OpCodes.Stelem_Ref)
      
      pmIL.Emit(OpCodes.Ldloc, tempObjArrLB)
      pmIL.Emit(OpCodes.Ldc_I4_3)
      pmIL.Emit(OpCodes.Ldloc, y2LB)
      pmIL.Emit(OpCodes.Box, GetType(Integer))
      pmIL.Emit(OpCodes.Stelem_Ref)
      
      pmIL.Emit(OpCodes.Ldloc, tempObjArrLB)
      pmIL.Emit(OpCodes.Ldc_I4_4)
      pmIL.Emit(OpCodes.Ldloc, point1LB)
      pmIL.Emit(OpCodes.Ldloc, point2LB)
      pmIL.EmitCall(OpCodes.Callvirt, pointDPBldr, Nothing)
      
      pmIL.Emit(OpCodes.Box, GetType(Integer))
      pmIL.Emit(OpCodes.Stelem_Ref)
      pmIL.Emit(OpCodes.Ldloc, tempObjArrLB)
      pmIL.EmitCall(OpCodes.Call, writeLineMI, Nothing)
      
      pmIL.Emit(OpCodes.Ret)
      
      Console.WriteLine("PointMain (entry point) built.")
      
      pointType = myTypeBldr.CreateType()
      
      Console.WriteLine("Type completed.")
      
      myAsmBldr.SetEntryPoint(pointMainBldr)
      
      myAsmBldr.Save(asmFileName)
      
      Console.WriteLine("Assembly saved as '{0}'.",
 asmFileName)
      Console.WriteLine("Type '{0}' at the prompt to run your new
 " + "dynamically generated dot product calculator.", asmFileName)
      
      ' After execution, this program will have generated and written
 to disk,
      ' in the directory you executed it from, a program named 
      ' <name_you_entered_here>.exe. You can run it by typing
      ' the name you gave it during execution, in the same directory
 where
      ' you executed this program.

      Return pointType

   End Function 'BuildDynAssembly
    
   
   Public Shared Sub Main()
      
      Dim myType As Type = BuildDynAssembly()
      Console.WriteLine("---")
      
      ' Let's invoke the type 'Point' created in our dynamic assembly.
 
      Dim ptInstance As Object
 = Activator.CreateInstance(myType, New Object(1)
 {0, 0})
      
      myType.InvokeMember("PointMain", BindingFlags.InvokeMethod,
 _
              Nothing, ptInstance, New Object()
 {})

   End Sub 'Main

End Class 'AssemblyBuilderDemo

using System;
using System.Text;
using System.Threading;
using System.Reflection;
using System.Reflection.Emit;

// The Point class is the class we will reflect on and copy into our
// dynamic assembly. The public static function PointMain() will be
 used
// as our entry point.
//
// We are constructing the type seen here dynamically, and will write
 it
// out into a .exe file for later execution from the command-line.
// --- 
// class Point {
//   
//   private int x;
//   private int y;
//
//   public Point(int ix, int iy) {
//
//       this.x = ix;
//        this.y = iy;
//
//   }
//
//   public int DotProduct (Point p) {
//   
//       return ((this.x * p.x) + (this.y * p.y));
//
//   }
//
//   public static void PointMain() {
//     
//     Console.Write("Enter the 'x' value for point 1: ");
 
//     int x1 = Convert.ToInt32(Console.ReadLine());
//     
//     Console.Write("Enter the 'y' value for point 1: ");
//     int y1 = Convert.ToInt32(Console.ReadLine());
//
//     Console.Write("Enter the 'x' value for point 2: ");
 
//     int x2 = Convert.ToInt32(Console.ReadLine());
//     
//     Console.Write("Enter the 'y' value for point 2: ");
//     int y2 = Convert.ToInt32(Console.ReadLine());
//
//     Point p1 = new Point(x1, y1);
//     Point p2 = new Point(x2, y2);
//
//     Console.WriteLine("({0}, {1}) . ({2}, {3}) = {4}."
,
//               x1, y1, x2, y2, p1.DotProduct(p2));
//   
//   }
//
// }
// ---

class AssemblyBuilderDemo {

   public static Type BuildDynAssembly() {

        Type pointType = null;

        AppDomain currentDom = Thread.GetDomain();

    Console.Write("Please enter a name for your new
 assembly: ");
    StringBuilder asmFileNameBldr = new StringBuilder();
        asmFileNameBldr.Append(Console.ReadLine());
    asmFileNameBldr.Append(".exe");
    string asmFileName = asmFileNameBldr.ToString();    

        AssemblyName myAsmName = new AssemblyName();
    myAsmName.Name = "MyDynamicAssembly";

        AssemblyBuilder myAsmBldr = currentDom.DefineDynamicAssembly(
                           myAsmName,
                           AssemblyBuilderAccess.RunAndSave);

        // We've created a dynamic assembly space - now, we need to
 create a module
        // within it to reflect the type Point into.

    ModuleBuilder myModuleBldr = myAsmBldr.DefineDynamicModule(asmFileName,
                                       asmFileName);
      
    TypeBuilder myTypeBldr =  myModuleBldr.DefineType("Point");
    
        FieldBuilder xField = myTypeBldr.DefineField("x", typeof(int)
,
                                                     FieldAttributes.Private);
        FieldBuilder yField = myTypeBldr.DefineField("y", typeof(int),
 
                                                     FieldAttributes.Private); 

        // Build the constructor.

        Type objType = Type.GetType("System.Object"); 
        ConstructorInfo objCtor = objType.GetConstructor(new Type[0]);

        Type[] ctorParams = new Type[] {typeof(int),
 typeof(int)};
        ConstructorBuilder pointCtor = myTypeBldr.DefineConstructor(
                                   MethodAttributes.Public,
                                  CallingConventions.Standard,
                                  ctorParams);
        ILGenerator ctorIL = pointCtor.GetILGenerator();
        ctorIL.Emit(OpCodes.Ldarg_0);
        ctorIL.Emit(OpCodes.Call, objCtor);
        ctorIL.Emit(OpCodes.Ldarg_0);
        ctorIL.Emit(OpCodes.Ldarg_1);
        ctorIL.Emit(OpCodes.Stfld, xField); 
        ctorIL.Emit(OpCodes.Ldarg_0);
        ctorIL.Emit(OpCodes.Ldarg_2);
        ctorIL.Emit(OpCodes.Stfld, yField); 
        ctorIL.Emit(OpCodes.Ret);

    // Build the DotProduct method.

        Console.WriteLine("Constructor built.");

    MethodBuilder pointDPBldr = myTypeBldr.DefineMethod("DotProduct",
                                MethodAttributes.Public,
                                typeof(int),
                                new Type[] {myTypeBldr});
                               
    ILGenerator dpIL = pointDPBldr.GetILGenerator();
    dpIL.Emit(OpCodes.Ldarg_0);
    dpIL.Emit(OpCodes.Ldfld, xField);
    dpIL.Emit(OpCodes.Ldarg_1);
    dpIL.Emit(OpCodes.Ldfld, xField);
    dpIL.Emit(OpCodes.Mul_Ovf_Un);
    dpIL.Emit(OpCodes.Ldarg_0);
    dpIL.Emit(OpCodes.Ldfld, yField);
    dpIL.Emit(OpCodes.Ldarg_1);
    dpIL.Emit(OpCodes.Ldfld, yField);
    dpIL.Emit(OpCodes.Mul_Ovf_Un);
    dpIL.Emit(OpCodes.Add_Ovf_Un);
    dpIL.Emit(OpCodes.Ret);

      // Build the PointMain method.

        Console.WriteLine("DotProduct built.");

    MethodBuilder pointMainBldr = myTypeBldr.DefineMethod("PointMain",
                                MethodAttributes.Public |
                                MethodAttributes.Static,
                                typeof(void),
                                null);
        pointMainBldr.InitLocals = true;
    ILGenerator pmIL = pointMainBldr.GetILGenerator();

    // We have four methods that we wish to call, and must represent
 as
    // MethodInfo tokens:
    // - void Console.WriteLine(string)
    // - string Console.ReadLine()
    // - int Convert.Int32(string)
    // - void Console.WriteLine(string, object[])

    MethodInfo writeMI = typeof(Console).GetMethod(
                         "Write",
                         new Type[] {typeof(string)});
    MethodInfo readLineMI = typeof(Console).GetMethod(
                            "ReadLine",
                            new Type[0]);
    MethodInfo convertInt32MI = typeof(Convert).GetMethod(
                            "ToInt32",
                                new Type[] {typeof(string)});
    Type[] wlParams = new Type[] {typeof(string),
 typeof(object[])};
    MethodInfo writeLineMI = typeof(Console).GetMethod(
                         "WriteLine",
                         wlParams);

    // Although we could just refer to the local variables by
    // index (short ints for Ldloc/Stloc, bytes for LdLoc_S/Stloc_S)
,
    // this time, we'll use LocalBuilders for clarity and to
    // demonstrate their usage and syntax.

    LocalBuilder x1LB = pmIL.DeclareLocal(typeof(int));      
          
    LocalBuilder y1LB = pmIL.DeclareLocal(typeof(int));      
          
    LocalBuilder x2LB = pmIL.DeclareLocal(typeof(int));      
          
    LocalBuilder y2LB = pmIL.DeclareLocal(typeof(int));      
          
    LocalBuilder point1LB = pmIL.DeclareLocal(myTypeBldr);                
    LocalBuilder point2LB = pmIL.DeclareLocal(myTypeBldr);                
    LocalBuilder tempObjArrLB = pmIL.DeclareLocal(typeof(object[]));            
    

    pmIL.Emit(OpCodes.Ldstr, "Enter the 'x' value for point
 1: ");    
    pmIL.EmitCall(OpCodes.Call, writeMI, null);
    pmIL.EmitCall(OpCodes.Call, readLineMI, null);
    pmIL.EmitCall(OpCodes.Call, convertInt32MI, null);
    pmIL.Emit(OpCodes.Stloc, x1LB);

    pmIL.Emit(OpCodes.Ldstr, "Enter the 'y' value for point
 1: ");    
    pmIL.EmitCall(OpCodes.Call, writeMI, null);
    pmIL.EmitCall(OpCodes.Call, readLineMI, null);
    pmIL.EmitCall(OpCodes.Call, convertInt32MI, null);
    pmIL.Emit(OpCodes.Stloc, y1LB);

    pmIL.Emit(OpCodes.Ldstr, "Enter the 'x' value for point
 2: ");    
    pmIL.EmitCall(OpCodes.Call, writeMI, null);
    pmIL.EmitCall(OpCodes.Call, readLineMI, null);
    pmIL.EmitCall(OpCodes.Call, convertInt32MI, null);
    pmIL.Emit(OpCodes.Stloc, x2LB);

    pmIL.Emit(OpCodes.Ldstr, "Enter the 'y' value for point
 2: ");    
    pmIL.EmitCall(OpCodes.Call, writeMI, null);
    pmIL.EmitCall(OpCodes.Call, readLineMI, null);
    pmIL.EmitCall(OpCodes.Call, convertInt32MI, null);
    pmIL.Emit(OpCodes.Stloc, y2LB);

    pmIL.Emit(OpCodes.Ldloc, x1LB);
    pmIL.Emit(OpCodes.Ldloc, y1LB);
    pmIL.Emit(OpCodes.Newobj, pointCtor);
    pmIL.Emit(OpCodes.Stloc, point1LB);

    pmIL.Emit(OpCodes.Ldloc, x2LB);
    pmIL.Emit(OpCodes.Ldloc, y2LB);
    pmIL.Emit(OpCodes.Newobj, pointCtor);
    pmIL.Emit(OpCodes.Stloc, point2LB);

    pmIL.Emit(OpCodes.Ldstr, "({0}, {1}) . ({2}, {3}) = {4}.");
    pmIL.Emit(OpCodes.Ldc_I4_5);
    pmIL.Emit(OpCodes.Newarr, typeof(Object));
    pmIL.Emit(OpCodes.Stloc, tempObjArrLB);

    pmIL.Emit(OpCodes.Ldloc, tempObjArrLB);
    pmIL.Emit(OpCodes.Ldc_I4_0);
    pmIL.Emit(OpCodes.Ldloc, x1LB);
    pmIL.Emit(OpCodes.Box, typeof(int));
    pmIL.Emit(OpCodes.Stelem_Ref);

    pmIL.Emit(OpCodes.Ldloc, tempObjArrLB);
    pmIL.Emit(OpCodes.Ldc_I4_1);
    pmIL.Emit(OpCodes.Ldloc, y1LB);
    pmIL.Emit(OpCodes.Box, typeof(int));
    pmIL.Emit(OpCodes.Stelem_Ref);

    pmIL.Emit(OpCodes.Ldloc, tempObjArrLB);
    pmIL.Emit(OpCodes.Ldc_I4_2);
    pmIL.Emit(OpCodes.Ldloc, x2LB);
    pmIL.Emit(OpCodes.Box, typeof(int));
    pmIL.Emit(OpCodes.Stelem_Ref);

    pmIL.Emit(OpCodes.Ldloc, tempObjArrLB);
    pmIL.Emit(OpCodes.Ldc_I4_3);
    pmIL.Emit(OpCodes.Ldloc, y2LB);
    pmIL.Emit(OpCodes.Box, typeof(int));
    pmIL.Emit(OpCodes.Stelem_Ref);

    pmIL.Emit(OpCodes.Ldloc, tempObjArrLB);
    pmIL.Emit(OpCodes.Ldc_I4_4);
    pmIL.Emit(OpCodes.Ldloc, point1LB);
    pmIL.Emit(OpCodes.Ldloc, point2LB);
    pmIL.EmitCall(OpCodes.Callvirt, pointDPBldr, null);

    pmIL.Emit(OpCodes.Box, typeof(int));
    pmIL.Emit(OpCodes.Stelem_Ref);
    pmIL.Emit(OpCodes.Ldloc, tempObjArrLB);
    pmIL.EmitCall(OpCodes.Call, writeLineMI, null);

    pmIL.Emit(OpCodes.Ret);

        Console.WriteLine("PointMain (entry point) built.");

        pointType = myTypeBldr.CreateType();

        Console.WriteLine("Type completed.");

    myAsmBldr.SetEntryPoint(pointMainBldr);

        myAsmBldr.Save(asmFileName);

        Console.WriteLine("Assembly saved as '{0}'.", asmFileName);
        Console.WriteLine("Type '{0}' at the prompt to run your new
 " +
                  "dynamically generated dot product calculator.",
               asmFileName);

    // After execution, this program will have generated and written
 to disk,
        // in the directory you executed it from, a program named 
    // <name_you_entered_here>.exe. You can run it by typing
    // the name you gave it during execution, in the same directory
 where
    // you executed this program.

    return pointType;
   
   }

   public static void Main()
 {

     Type myType = BuildDynAssembly(); 
     Console.WriteLine("---");

     // Let's invoke the type 'Point' created in our dynamic assembly.
 
   
     object ptInstance = Activator.CreateInstance(myType, new
 object[] {0,0}); 
                          
     myType.InvokeMember("PointMain",
              BindingFlags.InvokeMethod,
              null,
              ptInstance,
              new object[0]); 

            
   }
}

C++

using namespace System;
using namespace System::Text;
using namespace System::Threading;
using namespace System::Reflection;
using namespace System::Reflection::Emit;

// The Point class is the class we will reflect on and copy into our
// dynamic assembly. The public static function PointMain() will be
 used
// as our entry point.
//
// We are constructing the type seen here dynamically, and will write
 it
// out into a .exe file for later execution from the command-line.
// ---
// __gc class Point {
// 
// private:
//    int  x;
//    int  y;
// 
// public:
//    Point(int ix, int iy) {
// 
//       this->x = ix;
//       this->y = iy;
// 
//    }
// 
//    int DotProduct (Point* p) {
// 
//       return ((this->x * p->x) + (this->y * p->y));
// 
//   }
// 
//    static void PointMain() {
// 
//       Console::Write(S"Enter the 'x' value for point 1: ");
//       int x1 = Convert::ToInt32(Console::ReadLine());
// 
//       Console::Write(S"Enter the 'y' value for point 1: ");
//       int y1 = Convert::ToInt32(Console::ReadLine());
// 
//       Console::Write(S"Enter the 'x' value for point 2: ");
//       int x2 = Convert::ToInt32(Console::ReadLine());
// 
//       Console::Write(S"Enter the 'y' value for point 2: ");
//       int y2 = Convert::ToInt32(Console::ReadLine());
// 
//       Point* p1 = new Point(x1, y1);
//       Point* p2 = new Point(x2, y2);
// 
//       Console::WriteLine(S"( {0}, {1}) . ( {2}, {3}) = {4}."
,
//          __box(x1), __box(y1), __box(x2), __box(y2), p1->DotProduct(p2));
// 
//    }
// 
// };
// ---
Type^ BuildDynAssembly()
{
   Type^ pointType = nullptr;
   AppDomain^ currentDom = Thread::GetDomain();
   Console::Write( "Please enter a name for your new
 assembly: " );
   StringBuilder^ asmFileNameBldr = gcnew StringBuilder;
   asmFileNameBldr->Append( Console::ReadLine() );
   asmFileNameBldr->Append( ".exe" );
   String^ asmFileName = asmFileNameBldr->ToString();
   AssemblyName^ myAsmName = gcnew AssemblyName;
   myAsmName->Name = "MyDynamicAssembly";
   AssemblyBuilder^ myAsmBldr = currentDom->DefineDynamicAssembly( myAsmName,
 AssemblyBuilderAccess::RunAndSave );
   
   // We've created a dynamic assembly space - now, we need to create
 a module
   // within it to reflect the type Point into.
   ModuleBuilder^ myModuleBldr = myAsmBldr->DefineDynamicModule( asmFileName,
 asmFileName );
   TypeBuilder^ myTypeBldr = myModuleBldr->DefineType( "Point" );
   FieldBuilder^ xField = myTypeBldr->DefineField( "x", int::typeid,
 FieldAttributes::Private );
   FieldBuilder^ yField = myTypeBldr->DefineField( "y", int::typeid,
 FieldAttributes::Private );
   
   // Build the constructor.
   Type^ objType = Type::GetType( "System.Object" );
   ConstructorInfo^ objCtor = objType->GetConstructor( gcnew array<Type^>(0)
 );
   array<Type^>^temp4 = {int::typeid,int::typeid};
   array<Type^>^ctorParams = temp4;
   ConstructorBuilder^ pointCtor = myTypeBldr->DefineConstructor( MethodAttributes::Public,
 CallingConventions::Standard, ctorParams );
   ILGenerator^ ctorIL = pointCtor->GetILGenerator();
   ctorIL->Emit( OpCodes::Ldarg_0 );
   ctorIL->Emit( OpCodes::Call, objCtor );
   ctorIL->Emit( OpCodes::Ldarg_0 );
   ctorIL->Emit( OpCodes::Ldarg_1 );
   ctorIL->Emit( OpCodes::Stfld, xField );
   ctorIL->Emit( OpCodes::Ldarg_0 );
   ctorIL->Emit( OpCodes::Ldarg_2 );
   ctorIL->Emit( OpCodes::Stfld, yField );
   ctorIL->Emit( OpCodes::Ret );
   
   // Build the DotProduct method.
   Console::WriteLine( "Constructor built." );
   array<Type^>^temp0 = {myTypeBldr};
   MethodBuilder^ pointDPBldr = myTypeBldr->DefineMethod( "DotProduct",
 MethodAttributes::Public, int::typeid, temp0 );
   ILGenerator^ dpIL = pointDPBldr->GetILGenerator();
   dpIL->Emit( OpCodes::Ldarg_0 );
   dpIL->Emit( OpCodes::Ldfld, xField );
   dpIL->Emit( OpCodes::Ldarg_1 );
   dpIL->Emit( OpCodes::Ldfld, xField );
   dpIL->Emit( OpCodes::Mul_Ovf_Un );
   dpIL->Emit( OpCodes::Ldarg_0 );
   dpIL->Emit( OpCodes::Ldfld, yField );
   dpIL->Emit( OpCodes::Ldarg_1 );
   dpIL->Emit( OpCodes::Ldfld, yField );
   dpIL->Emit( OpCodes::Mul_Ovf_Un );
   dpIL->Emit( OpCodes::Add_Ovf_Un );
   dpIL->Emit( OpCodes::Ret );
   
   // Build the PointMain method.
   Console::WriteLine( "DotProduct built." );
   MethodBuilder^ pointMainBldr = myTypeBldr->DefineMethod( "PointMain",
 static_cast<MethodAttributes>(MethodAttributes::Public | MethodAttributes::Static),
 void::typeid, nullptr );
   pointMainBldr->InitLocals = true;
   ILGenerator^ pmIL = pointMainBldr->GetILGenerator();
   
   // We have four methods that we wish to call, and must represent
 as
   // MethodInfo tokens:
   // - void Console::WriteLine(String*)
   // - String* Console::ReadLine()
   // - int Convert::Int32(String*)
   // - void Console::WriteLine(String*, Object*[])
   array<Type^>^temp1 = {String::typeid};
   MethodInfo^ writeMI = Console::typeid->GetMethod( "Write", temp1
 );
   MethodInfo^ readLineMI = Console::typeid->GetMethod( "ReadLine",
 gcnew array<Type^>(0) );
   array<Type^>^temp2 = {String::typeid};
   MethodInfo^ convertInt32MI = Convert::typeid->GetMethod( "ToInt32",
 temp2 );
   array<Type^>^temp5 = {String::typeid,array<Object^>::typeid};
   array<Type^>^wlParams = temp5;
   MethodInfo^ writeLineMI = Console::typeid->GetMethod( "WriteLine",
 wlParams );
   
   // Although we could just refer to the local variables by
   // index (short ints for Ldloc/Stloc, bytes for LdLoc_S/Stloc_S)
,
   // this time, we'll use LocalBuilders for clarity and to
   // demonstrate their usage and syntax.
   LocalBuilder^ x1LB = pmIL->DeclareLocal( int::typeid );
   LocalBuilder^ y1LB = pmIL->DeclareLocal( int::typeid );
   LocalBuilder^ x2LB = pmIL->DeclareLocal( int::typeid );
   LocalBuilder^ y2LB = pmIL->DeclareLocal( int::typeid );
   LocalBuilder^ point1LB = pmIL->DeclareLocal( myTypeBldr );
   LocalBuilder^ point2LB = pmIL->DeclareLocal( myTypeBldr );
   LocalBuilder^ tempObjArrLB = pmIL->DeclareLocal( array<Object^>::typeid
 );
   pmIL->Emit( OpCodes::Ldstr, "Enter the 'x' value for
 point 1: " );
   pmIL->EmitCall( OpCodes::Call, writeMI, nullptr );
   pmIL->EmitCall( OpCodes::Call, readLineMI, nullptr );
   pmIL->EmitCall( OpCodes::Call, convertInt32MI, nullptr );
   pmIL->Emit( OpCodes::Stloc, x1LB );
   pmIL->Emit( OpCodes::Ldstr, "Enter the 'y' value for
 point 1: " );
   pmIL->EmitCall( OpCodes::Call, writeMI, nullptr );
   pmIL->EmitCall( OpCodes::Call, readLineMI, nullptr );
   pmIL->EmitCall( OpCodes::Call, convertInt32MI, nullptr );
   pmIL->Emit( OpCodes::Stloc, y1LB );
   pmIL->Emit( OpCodes::Ldstr, "Enter the 'x' value for
 point 2: " );
   pmIL->EmitCall( OpCodes::Call, writeMI, nullptr );
   pmIL->EmitCall( OpCodes::Call, readLineMI, nullptr );
   pmIL->EmitCall( OpCodes::Call, convertInt32MI, nullptr );
   pmIL->Emit( OpCodes::Stloc, x2LB );
   pmIL->Emit( OpCodes::Ldstr, "Enter the 'y' value for
 point 2: " );
   pmIL->EmitCall( OpCodes::Call, writeMI, nullptr );
   pmIL->EmitCall( OpCodes::Call, readLineMI, nullptr );
   pmIL->EmitCall( OpCodes::Call, convertInt32MI, nullptr );
   pmIL->Emit( OpCodes::Stloc, y2LB );
   pmIL->Emit( OpCodes::Ldloc, x1LB );
   pmIL->Emit( OpCodes::Ldloc, y1LB );
   pmIL->Emit( OpCodes::Newobj, pointCtor );
   pmIL->Emit( OpCodes::Stloc, point1LB );
   pmIL->Emit( OpCodes::Ldloc, x2LB );
   pmIL->Emit( OpCodes::Ldloc, y2LB );
   pmIL->Emit( OpCodes::Newobj, pointCtor );
   pmIL->Emit( OpCodes::Stloc, point2LB );
   pmIL->Emit( OpCodes::Ldstr, "( {0}, {1}) . ( {2}, {3}) = {4}." );
   pmIL->Emit( OpCodes::Ldc_I4_5 );
   pmIL->Emit( OpCodes::Newarr, Object::typeid );
   pmIL->Emit( OpCodes::Stloc, tempObjArrLB );
   pmIL->Emit( OpCodes::Ldloc, tempObjArrLB );
   pmIL->Emit( OpCodes::Ldc_I4_0 );
   pmIL->Emit( OpCodes::Ldloc, x1LB );
   pmIL->Emit( OpCodes::Box, int::typeid );
   pmIL->Emit( OpCodes::Stelem_Ref );
   pmIL->Emit( OpCodes::Ldloc, tempObjArrLB );
   pmIL->Emit( OpCodes::Ldc_I4_1 );
   pmIL->Emit( OpCodes::Ldloc, y1LB );
   pmIL->Emit( OpCodes::Box, int::typeid );
   pmIL->Emit( OpCodes::Stelem_Ref );
   pmIL->Emit( OpCodes::Ldloc, tempObjArrLB );
   pmIL->Emit( OpCodes::Ldc_I4_2 );
   pmIL->Emit( OpCodes::Ldloc, x2LB );
   pmIL->Emit( OpCodes::Box, int::typeid );
   pmIL->Emit( OpCodes::Stelem_Ref );
   pmIL->Emit( OpCodes::Ldloc, tempObjArrLB );
   pmIL->Emit( OpCodes::Ldc_I4_3 );
   pmIL->Emit( OpCodes::Ldloc, y2LB );
   pmIL->Emit( OpCodes::Box, int::typeid );
   pmIL->Emit( OpCodes::Stelem_Ref );
   pmIL->Emit( OpCodes::Ldloc, tempObjArrLB );
   pmIL->Emit( OpCodes::Ldc_I4_4 );
   pmIL->Emit( OpCodes::Ldloc, point1LB );
   pmIL->Emit( OpCodes::Ldloc, point2LB );
   pmIL->EmitCall( OpCodes::Callvirt, pointDPBldr, nullptr );
   pmIL->Emit( OpCodes::Box, int::typeid );
   pmIL->Emit( OpCodes::Stelem_Ref );
   pmIL->Emit( OpCodes::Ldloc, tempObjArrLB );
   pmIL->EmitCall( OpCodes::Call, writeLineMI, nullptr );
   pmIL->Emit( OpCodes::Ret );
   Console::WriteLine( "PointMain (entry point) built." );
   pointType = myTypeBldr->CreateType();
   Console::WriteLine( "Type completed." );
   myAsmBldr->SetEntryPoint( pointMainBldr );
   myAsmBldr->Save( asmFileName );
   Console::WriteLine( "Assembly saved as ' {0}'.", asmFileName );
   Console::WriteLine( "Type ' {0}' at the prompt to run your new
 dynamically generated dot product calculator.", asmFileName );
   
   // After execution, this program will have generated and written
 to disk,
   // in the directory you executed it from, a program named
   // <name_you_entered_here>.exe. You can run it by typing
   // the name you gave it during execution, in the same directory where
   // you executed this program.
   return pointType;
}

int main()
{
   Type^ myType = BuildDynAssembly();
   Console::WriteLine( "---" );
   
   // Let's invoke the type 'Point' created in our dynamic assembly.
   array<Object^>^temp3 = {nullptr,nullptr};
   Object^ ptInstance = Activator::CreateInstance( myType, temp3 );
   myType->InvokeMember( "PointMain", BindingFlags::InvokeMethod, nullptr,
 ptInstance, gcnew array<Object^>(0) );
}

.NET Framework のセキュリティ

FileIOPermission このアセンブリを指定したファイル名に保存するには、Write = true、または Append = true である必要があります。
ReflectionPermission (Type.InvokeMember などの機構を通じて遅延バインディングが呼び出されるときに必要なアクセス許可)ReflectionPermissionFlag.MemberAccess (関連する列挙体)

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
AssemblyBuilder クラス
AssemblyBuilder メンバ
System.Reflection.Emit 名前空間

AssemblyBuilder.Save メソッド (String, PortableExecutableKinds, ImageFileMachine)

メモ : このメソッドは、.NET Framework version 2.0 で新しく追加されたものです。

アセンブリの実行可能ファイルに含まれるコードの性質、および保存先プラットフォームを指定して、この動的アセンブリをディスクに保存します。

名前空間: System.Reflection.Emit
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

Public Sub Save ( _
    assemblyFileName As String, _
    portableExecutableKind As PortableExecutableKinds, _
    imageFileMachine As ImageFileMachine _
)

Visual Basic (使用法)

Dim instance As AssemblyBuilder
Dim assemblyFileName As String
Dim portableExecutableKind As PortableExecutableKinds
Dim imageFileMachine As ImageFileMachine

instance.Save(assemblyFileName, portableExecutableKind, imageFileMachine)

public void Save (
    string assemblyFileName,
    PortableExecutableKinds portableExecutableKind,
    ImageFileMachine imageFileMachine
)

C++

public:
void Save (
    String^ assemblyFileName, 
    PortableExecutableKinds portableExecutableKind, 
    ImageFileMachine imageFileMachine
)

public void Save (
    String assemblyFileName, 
    PortableExecutableKinds portableExecutableKind, 
    ImageFileMachine imageFileMachine
)

JScript

public function Save (
    assemblyFileName : String, 
    portableExecutableKind : PortableExecutableKinds, 
    imageFileMachine : ImageFileMachine
)

パラメータ

assemblyFileName: アセンブリのファイル名。

portableExecutableKind: コードの性質を指定する PortableExecutableKinds 値のビットごとの組み合わせ。

imageFileMachine: 保存先プラットフォームを指定する ImageFileMachine 値の 1 つ。

例外

例外の種類	条件
ArgumentException	assemblyFileName の長さが 0 です。またはアセンブリに同じ名前で複数のモジュールリソースファイルがあります。またはアセンブリの保存先ディレクトリが無効です。または assemblyFileName が単純ファイル名ではありません (ディレクトリコンポーネントまたはドライブコンポーネントがあるなど)。または、バージョン情報リソースも含めて複数のアンマネージリソースがこのアセンブリで定義されています。または AssemblyCultureAttribute の CultureInfo 文字列が無効な文字列で、このメソッドを呼び出す前に DefineVersionInfoResource が呼び出されました。
ArgumentNullException	assemblyFileName が null 参照 (Visual Basic では Nothing) です。
InvalidOperationException	このアセンブリは既に保存されています。またはこのアセンブリのアクセスモードが RunAssemblyBuilderAccess です。
IOException	保存中に出力エラーが発生しました。
NotSupportedException	ディスクに書き込むアセンブリのモジュール内のいずれかの型に対して CreateType が呼び出されていません。

解説

imageFileMachine と portableExecutableKind に互換性がない場合、portableExecutableKind よりも imageFileMachine が優先されます。例外はスローされません。たとえば、ImageFileMachine.I386 と PortableExecutableKinds.PE32Plus を組み合わせて指定した場合、PortableExecutableKinds.PE32Plus は無視されます。

DefineResource を使用して取得した ResourceWriter ごとに、このメソッドは .resources ファイルを書き込み、Close を呼び出してストリームを閉じます。

.NET Framework のセキュリティ

FileIOPermission このアセンブリを指定したファイル名に保存するには、Write = true、または Append = true である必要があります。
ReflectionPermission (Type.InvokeMember などの機構を通じて遅延バインディングが呼び出されるときに必要なアクセス許可)ReflectionPermissionFlag.MemberAccess (関連する列挙体)

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0

参照

関連項目
AssemblyBuilder クラス
AssemblyBuilder メンバ
System.Reflection.Emit 名前空間

AssemblyBuilder.Save メソッド

この動的アセンブリをディスクに保存します。
オーバーロードの一覧

名前	説明
AssemblyBuilder.Save (String)	この動的アセンブリをディスクに保存します。
AssemblyBuilder.Save (String, PortableExecutableKinds, ImageFileMachine)	アセンブリの実行可能ファイルに含まれるコードの性質、および保存先プラットフォームを指定して、この動的アセンブリをディスクに保存します。

参照

AssemblyBuilder.Saveとは？わかりやすく解説

AssemblyBuilder.Save メソッド (String)

AssemblyBuilder.Save メソッド (String, PortableExecutableKinds, ImageFileMachine)

AssemblyBuilder.Save メソッド

関連項目

英和和英テキスト翻訳

「AssemblyBuilder.Save」の関連用語


	© 2026 Microsoft.All rights reserved.

AssemblyBuilder.Saveとは？ わかりやすく解説

AssemblyBuilder.Save メソッド (String)

AssemblyBuilder.Save メソッド (String, PortableExecutableKinds, ImageFileMachine)

AssemblyBuilder.Save メソッド

関連項目

英和和英テキスト翻訳

「AssemblyBuilder.Save」の関連用語

AssemblyBuilder.Saveとは？わかりやすく解説