AssemblyBuilder.Save Methode

Quelle:

AssemblyBuilder.cs

public:
 void Save(System::String ^ assemblyFileName);

public void Save (string assemblyFileName);

member this.Save : string -> unit

Public Sub Save (assemblyFileName As String)

Parameter

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird eine dynamische Assembly erstellt und anschließend mithilfe von Saveauf einem lokalen Datenträger gespeichert.

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) );
}

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]);
   }
}

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
'     
'    
'    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
' End Class
' ---
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

End Class

Hinweise

Diese Methode speichert alle nicht vorübergehenden dynamischen Module, die in dieser dynamischen Assembly definiert sind. Vorübergehende dynamische Module werden nicht gespeichert. Der Name der Assemblydatei kann mit dem Namen eines der Module übereinstimmen. Wenn dies der Grund ist, wird das Assemblymanifest in diesem Modul gespeichert. assemblyFileName kann sich von den Namen aller module unterscheiden, die in der Assembly enthalten sind. Wenn ja, enthält die Assemblydatei nur das Assemblymanifest.

Für jede ResourceWriter , die mit DefineResourceabgerufen wird, schreibt diese Methode die RESOURCES-Datei und ruft auf Close , um den Stream zu schließen.

Der assemblyFileName muss ein einfacher Dateiname ohne Laufwerk oder Verzeichniskomponente sein. Um eine Assembly in einem bestimmten Verzeichnis zu erstellen, verwenden Sie eine der Methoden, die DefineDynamicAssembly ein Zielverzeichnisargument verwendet.

In der .NET Framework Version 2.0 entspricht diese Überladung der -Methode dem Save Aufrufen der Save(String, PortableExecutableKinds, ImageFileMachine) Methodenüberladung mit ILOnly für den portableExecutableKind -Parameter und I386 den imageFileMachine -Parameter.

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

public void Save (string assemblyFileName, System.Reflection.PortableExecutableKinds portableExecutableKind, System.Reflection.ImageFileMachine imageFileMachine);

member this.Save : string * System.Reflection.PortableExecutableKinds * System.Reflection.ImageFileMachine -> unit

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

Parameter

Ausnahmen

Hinweise

Wenn imageFileMachine und portableExecutableKind inkompatibel sind, imageFileMachine hat Vorrang vor portableExecutableKind. Es wird keine Ausnahme ausgelöst. Wenn Sie beispielsweise mit PortableExecutableKinds.PE32PlusangebenImageFileMachine.I386, PortableExecutableKinds.PE32Plus wird ignoriert.

Diese Methode speichert alle nicht vorübergehenden dynamischen Module, die in dieser dynamischen Assembly definiert sind. Vorübergehende dynamische Module werden nicht gespeichert. Der Name der Assemblydatei kann mit dem Namen eines moduls identisch sein. Wenn dies der Grund ist, wird das Assemblymanifest in diesem Modul gespeichert. assemblyFileName kann sich von den Namen aller module unterscheiden, die in der Assembly enthalten sind. Wenn ja, enthält die Assemblydatei nur das Assemblymanifest.

Für jede ResourceWriter , die mit DefineResourceabgerufen wird, schreibt diese Methode die RESOURCES-Datei und ruft auf Close , um den Stream zu schließen.

Der assemblyFileName muss ein einfacher Dateiname ohne Laufwerk oder Verzeichniskomponente sein. Um eine Assembly in einem bestimmten Verzeichnis zu erstellen, verwenden Sie eine der Methoden, die DefineDynamicAssembly ein Zielverzeichnisargument verwendet.