AssemblyBuilder.Save Méthode
Définition
Important
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Enregistre cet assembly dynamique sur le disque.
Surcharges
| Save(String) |
Enregistre cet assembly dynamique sur le disque. |
| Save(String, PortableExecutableKinds, ImageFileMachine) |
Enregistre cet assembly dynamique sur le disque, en spécifiant la nature du code contenu dans les fichiers exécutables de l’assembly, ainsi que la plateforme cible. |
Save(String)
- Source:
- AssemblyBuilder.cs
Enregistre cet assembly dynamique sur le disque.
public:
void Save(System::String ^ assemblyFileName);public void Save (string assemblyFileName);member this.Save : string -> unitPublic Sub Save (assemblyFileName As String)Paramètres
- assemblyFileName
- String
Nom de fichier de l’assembly.
Exceptions
La longueur de assemblyFileName est égale à 0.
- ou -
Plusieurs fichiers de ressources de modules de l’assembly portent le même nom.
- ou -
Le répertoire cible de l’assembly n’est pas valide.
- ou -
assemblyFileName n’est pas un nom de fichier simple (par exemple, il inclut un répertoire ou un lecteur), ou plus d’une ressource non managée, y compris une ressource d’informations de version, a été définie dans cet assembly.
- ou -
La chaîne CultureInfo de AssemblyCultureAttribute n’est pas une chaîne valide et DefineVersionInfoResource(String, String, String, String, String) a été appelé avant l’appel de cette méthode.
assemblyFileName a la valeur null.
Une erreur de sortie se produit pendant l’enregistrement.
CreateType() n’a pas été appelé pour l’un des types des modules de l’assembly à écrire sur le disque.
Exemples
L’exemple de code suivant crée un assembly dynamique, puis le conserve sur un disque local à l’aide de 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
Remarques
Notes
L’enregistrement d’un assembly dynamique sur le disque est uniquement pris en charge dans .NET Framework.
Cette méthode enregistre tous les modules dynamiques non temporaires définis dans cet assembly dynamique. Les modules dynamiques temporaires ne sont pas enregistrés. Le nom du fichier d’assembly peut être identique au nom de l’un des modules. Si c’est le cas, le manifeste d’assembly est stocké dans ce module.
assemblyFileName peut être différent des noms de tous les modules contenus dans l’assembly. Si c’est le cas, le fichier d’assembly contient uniquement le manifeste de l’assembly.
Pour chaque ResourceWriter obtenue à l’aide de DefineResource, cette méthode écrit le fichier .resources et appelle Close pour fermer le flux.
Le assemblyFileName doit être un nom de fichier simple sans composant de lecteur ou de répertoire. Pour créer un assembly dans un répertoire spécifique, utilisez l’une DefineDynamicAssembly des méthodes qui prend un argument de répertoire cible.
Dans .NET Framework version 2.0, cette surcharge de la Save méthode équivaut à appeler la surcharge de méthode Save(String, PortableExecutableKinds, ImageFileMachine) avec ILOnly pour le portableExecutableKind paramètre et I386 pour le imageFileMachine paramètre.
S’applique à
Save(String, PortableExecutableKinds, ImageFileMachine)
Enregistre cet assembly dynamique sur le disque, en spécifiant la nature du code contenu dans les fichiers exécutables de l’assembly, ainsi que la plateforme cible.
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 -> unitPublic Sub Save (assemblyFileName As String, portableExecutableKind As PortableExecutableKinds, imageFileMachine As ImageFileMachine)Paramètres
- assemblyFileName
- String
Nom de fichier de l’assembly.
- portableExecutableKind
- PortableExecutableKinds
Combinaison de bits des valeurs PortableExecutableKinds qui spécifie la nature du code.
- imageFileMachine
- ImageFileMachine
Une des valeurs ImageFileMachine qui spécifient la plateforme cible.
Exceptions
La longueur de assemblyFileName est égale à 0.
- ou -
Plusieurs fichiers de ressources de modules de l’assembly portent le même nom.
- ou -
Le répertoire cible de l’assembly n’est pas valide.
- ou -
assemblyFileName n’est pas un nom de fichier simple (par exemple, il inclut un répertoire ou un lecteur), ou plusieurs ressources non managées, y compris les ressources d’informations de version, ont été définies dans cet assembly.
- ou -
La chaîne CultureInfo de AssemblyCultureAttribute n’est pas une chaîne valide et DefineVersionInfoResource(String, String, String, String, String) a été appelé avant l’appel de cette méthode.
assemblyFileName a la valeur null.
Une erreur de sortie se produit pendant l’enregistrement.
CreateType() n’a pas été appelé pour l’un des types des modules de l’assembly à écrire sur le disque.
Remarques
Notes
L’enregistrement d’un assembly dynamique sur le disque est uniquement pris en charge dans .NET Framework.
Si imageFileMachine et portableExecutableKind sont incompatibles, imageFileMachine est prioritaire sur portableExecutableKind. Aucune exception n’est générée. Par exemple, si vous spécifiez ImageFileMachine.I386 avec PortableExecutableKinds.PE32Plus, PortableExecutableKinds.PE32Plus est ignoré.
Cette méthode enregistre tous les modules dynamiques non temporaires définis dans cet assembly dynamique. Les modules dynamiques temporaires ne sont pas enregistrés. Le nom du fichier d’assembly peut être identique au nom de l’un des modules. Si c’est le cas, le manifeste d’assembly est stocké dans ce module.
assemblyFileName peut être différent des noms de tous les modules contenus dans l’assembly. Si c’est le cas, le fichier d’assembly contient uniquement le manifeste de l’assembly.
Pour chaque ResourceWriter obtenue à l’aide de DefineResource, cette méthode écrit le fichier .resources et appelle Close pour fermer le flux.
Le assemblyFileName doit être un nom de fichier simple sans composant de lecteur ou de répertoire. Pour créer un assembly dans un répertoire spécifique, utilisez l’une DefineDynamicAssembly des méthodes qui prend un argument de répertoire cible.
S’applique à
Collaborer avec nous sur GitHub
La source de ce contenu se trouve sur GitHub, où vous pouvez également créer et examiner les problèmes et les demandes de tirage. Pour plus d’informations, consultez notre guide du contributeur.
