AssemblyBuilder.Save Metodo

Definizione

Salva l'assembly dinamico sul disco.Saves this dynamic assembly to disk.

Overload

Save(String)

Salva l'assembly dinamico sul disco.Saves this dynamic assembly to disk.

Save(String, PortableExecutableKinds, ImageFileMachine)

Salva l'assembly dinamico su disco, specificando la natura del codice nei file eseguibili dell'assembly e la piattaforma di destinazione.Saves this dynamic assembly to disk, specifying the nature of code in the assembly's executables and the target platform.

Save(String)

Salva l'assembly dinamico sul disco.Saves this dynamic assembly to disk.

public:
 void Save(System::String ^ assemblyFileName);
public void Save (string assemblyFileName);
member this.Save : string -> unit
Public Sub Save (assemblyFileName As String)

Parametri

assemblyFileName
String

Nome file dell'assembly.The file name of the assembly.

Eccezioni

La lunghezza di assemblyFileName è 0.The length of assemblyFileName is 0.

-oppure--or- L'assembly contiene due o più file di risorse dei moduli con lo stesso nome.There are two or more modules resource files in the assembly with the same name.

-oppure--or- La directory di destinazione dell'assembly non è valida.The target directory of the assembly is invalid.

-oppure--or- assemblyFileName non è un nome file semplice, ad esempio un componente di unità o directory, oppure nell'assembly sono state definite più risorse non gestite, inclusa una risorsa di informazioni sulla versione.assemblyFileName is not a simple file name (for example, has a directory or drive component), or more than one unmanaged resource, including a version information resource, was defined in this assembly.

-oppure--or- La stringa CultureInfo in AssemblyCultureAttribute non è valida e DefineVersionInfoResource(String, String, String, String, String) è stato chiamato prima di chiamare il metodo.The CultureInfo string in AssemblyCultureAttribute is not a valid string and DefineVersionInfoResource(String, String, String, String, String) was called prior to calling this method.

assemblyFileName è null.assemblyFileName is null.

L'assembly è stato salvato in precedenza.This assembly has been saved before.

-oppure--or- L'assembly ha accesso RunAssemblyBuilderAccessThis assembly has access RunAssemblyBuilderAccess

Durante il salvataggio si verifica un errore di output.An output error occurs during the save.

Il metodo CreateType() non è stato chiamato per alcuno dei tipi nei moduli dell'assembly da scrivere nel disco.CreateType() has not been called for any of the types in the modules of the assembly to be written to disk.

Esempio

L'esempio di codice seguente crea un assembly dinamico e quindi lo rende permanente in un disco locale usando Save .The following code sample creates a dynamic assembly and then persists it to a local disk using Save.

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





Commenti

Questo metodo consente di salvare tutti i moduli dinamici non temporanei definiti in questo assembly dinamico.This method saves all non-transient dynamic modules defined in this dynamic assembly. I moduli dinamici temporanei non vengono salvati.Transient dynamic modules are not saved. Il nome del file di assembly può corrispondere al nome di uno dei moduli.The assembly file name can be the same as the name of one of the modules. In tal caso, il manifesto dell'assembly viene archiviato in tale modulo.If so, the assembly manifest is stored within that module. assemblyFileName può essere diverso dai nomi di tutti i moduli contenuti nell'assembly.assemblyFileName can be different from the names of all of the modules contained within the assembly. In tal caso, il file di assembly contiene solo il manifesto dell'assembly.If so, the assembly file contains only the assembly manifest.

Per ogni ResourceWriter ottenuto usando DefineResource , questo metodo scrive il file. resources e chiama Close per chiudere il flusso.For each ResourceWriter obtained using DefineResource, this method writes the .resources file and calls Close to close the stream.

assemblyFileNameDeve essere un nome di file semplice senza un'unità o un componente di directory.The assemblyFileName needs to be a simple file name without a drive or directory component. Per creare un assembly in una directory specifica, usare uno dei DefineDynamicAssembly metodi che accetta un argomento della directory di destinazione.To create an assembly in a specific directory, use one of the DefineDynamicAssembly methods that takes a target directory argument.

Nel .NET Framework versione 2,0, questo overload del Save metodo equivale alla chiamata dell' Save(String, PortableExecutableKinds, ImageFileMachine) Overload del metodo con ILOnly per il portableExecutableKind parametro e I386 per il imageFileMachine parametro.In the .NET Framework version 2.0, this overload of the Save method is equivalent to calling the Save(String, PortableExecutableKinds, ImageFileMachine) method overload with ILOnly for the portableExecutableKind parameter and I386 for the imageFileMachine parameter.

Si applica a

Save(String, PortableExecutableKinds, ImageFileMachine)

Salva l'assembly dinamico su disco, specificando la natura del codice nei file eseguibili dell'assembly e la piattaforma di destinazione.Saves this dynamic assembly to disk, specifying the nature of code in the assembly's executables and the target platform.

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)

Parametri

assemblyFileName
String

Nome file dell'assembly.The file name of the assembly.

portableExecutableKind
PortableExecutableKinds

Combinazione bit per bit di valori di PortableExecutableKinds che specifica la natura del codice.A bitwise combination of the PortableExecutableKinds values that specifies the nature of the code.

imageFileMachine
ImageFileMachine

Uno dei valori di ImageFileMachine che specifica la piattaforma di destinazione.One of the ImageFileMachine values that specifies the target platform.

Eccezioni

La lunghezza di assemblyFileName è 0.The length of assemblyFileName is 0.

-oppure--or- L'assembly contiene due o più file di risorse dei moduli con lo stesso nome.There are two or more modules resource files in the assembly with the same name.

-oppure--or- La directory di destinazione dell'assembly non è valida.The target directory of the assembly is invalid.

-oppure--or- assemblyFileName non è un nome file semplice, ad esempio include un componente di unità o directory, oppure nell'assembly sono state definite più risorse non gestite, inclusa una risorsa di informazioni sulla versione.assemblyFileName is not a simple file name (for example, has a directory or drive component), or more than one unmanaged resource, including a version information resources, was defined in this assembly.

-oppure--or- La stringa CultureInfo in AssemblyCultureAttribute non è valida e DefineVersionInfoResource(String, String, String, String, String) è stato chiamato prima di chiamare il metodo.The CultureInfo string in AssemblyCultureAttribute is not a valid string and DefineVersionInfoResource(String, String, String, String, String) was called prior to calling this method.

assemblyFileName è null.assemblyFileName is null.

L'assembly è stato salvato in precedenza.This assembly has been saved before.

-oppure--or- L'assembly ha accesso RunAssemblyBuilderAccessThis assembly has access RunAssemblyBuilderAccess

Durante il salvataggio si verifica un errore di output.An output error occurs during the save.

Il metodo CreateType() non è stato chiamato per alcuno dei tipi nei moduli dell'assembly da scrivere nel disco.CreateType() has not been called for any of the types in the modules of the assembly to be written to disk.

Commenti

Se imageFileMachine e portableExecutableKind sono incompatibili, ha la imageFileMachine precedenza su portableExecutableKind .If imageFileMachine and portableExecutableKind are incompatible, imageFileMachine takes precedence over portableExecutableKind. Non viene generata alcuna eccezione.No exception is thrown. Se, ad esempio, si specifica ImageFileMachine.I386 with PortableExecutableKinds.PE32Plus , PortableExecutableKinds.PE32Plus viene ignorato.For example, if you specify ImageFileMachine.I386 with PortableExecutableKinds.PE32Plus, PortableExecutableKinds.PE32Plus is ignored.

Questo metodo consente di salvare tutti i moduli dinamici non temporanei definiti in questo assembly dinamico.This method saves all non-transient dynamic modules defined in this dynamic assembly. I moduli dinamici temporanei non vengono salvati.Transient dynamic modules are not saved. Il nome del file di assembly può corrispondere al nome di uno dei moduli.The assembly file name can be the same as the name of one of the module. In tal caso, il manifesto dell'assembly viene archiviato in tale modulo.If so, the assembly manifest is stored within that module. assemblyFileName può essere diverso dai nomi di tutti i moduli contenuti nell'assembly.assemblyFileName can be different from the names of all of the modules contained within the assembly. In tal caso, il file di assembly contiene solo il manifesto dell'assembly.If so, the assembly file contains only the assembly manifest.

Per ogni ResourceWriter ottenuto usando DefineResource , questo metodo scrive il file. resources e chiama Close per chiudere il flusso.For each ResourceWriter obtained using DefineResource, this method writes the .resources file and calls Close to close the stream.

assemblyFileNameDeve essere un nome di file semplice senza un'unità o un componente di directory.The assemblyFileName needs to be a simple file name without a drive or directory component. Per creare un assembly in una directory specifica, usare uno dei DefineDynamicAssembly metodi che accetta un argomento della directory di destinazione.To create an assembly in a specific directory, use one of the DefineDynamicAssembly methods that takes a target directory argument.

Si applica a