AssemblyName.CodeBase Eigenschap
Definitie
Belangrijk
Bepaalde informatie heeft betrekking op een voorlopige productversie die aanzienlijk kan worden gewijzigd voordat deze wordt uitgebracht. Microsoft biedt geen enkele expliciete of impliciete garanties met betrekking tot de informatie die hier wordt verstrekt.
Hiermee haalt u de locatie van de assembly op of stelt u deze in als EEN URL.
public:
property System::String ^ CodeBase { System::String ^ get(); void set(System::String ^ value); };
public string CodeBase { get; set; }
member this.CodeBase : string with get, set
Public Property CodeBase As String
Waarde van eigenschap
Een tekenreeks die de URL-locatie van de assembly is.
Voorbeelden
In het volgende voorbeeld wordt een dynamische assembly verzonden en opgeslagen in de huidige map. Wanneer de assembly wordt gemaakt, wordt de CodeBase eigenschap gebruikt om de map op te geven waarin de assembly wordt opgeslagen.
using System;
using System.Reflection;
using System.Threading;
using System.IO;
using System.Globalization;
using System.Reflection.Emit;
using System.Configuration.Assemblies;
public class AssemblyName_CodeBase
{
public static void MakeAssembly(AssemblyName myAssemblyName, string fileName)
{
// Get the assembly builder from the application domain associated with the current thread.
AssemblyBuilder myAssemblyBuilder = Thread.GetDomain().DefineDynamicAssembly(myAssemblyName, AssemblyBuilderAccess.RunAndSave);
// Create a dynamic module in the assembly.
ModuleBuilder myModuleBuilder = myAssemblyBuilder.DefineDynamicModule("MyModule", fileName);
// Create a type in the module.
TypeBuilder myTypeBuilder = myModuleBuilder.DefineType("MyType");
// Create a method called 'Main'.
MethodBuilder myMethodBuilder = myTypeBuilder.DefineMethod("Main", MethodAttributes.Public | MethodAttributes.HideBySig |
MethodAttributes.Static, typeof(void), null);
// Get the Intermediate Language generator for the method.
ILGenerator myILGenerator = myMethodBuilder.GetILGenerator();
// Use the utility method to generate the IL instructions that print a string to the console.
myILGenerator.EmitWriteLine("Hello World!");
// Generate the 'ret' IL instruction.
myILGenerator.Emit(OpCodes.Ret);
// End the creation of the type.
myTypeBuilder.CreateType();
// Set the method with name 'Main' as the entry point in the assembly.
myAssemblyBuilder.SetEntryPoint(myMethodBuilder);
myAssemblyBuilder.Save(fileName);
}
public static void Main()
{
// Create a dynamic assembly with name 'MyAssembly' and build version '1.0.0.2001'.
AssemblyName myAssemblyName = new AssemblyName();
// Set the codebase to the physical directory were the assembly resides.
myAssemblyName.CodeBase = Directory.GetCurrentDirectory();
// Set the culture information of the assembly to 'English-American'.
myAssemblyName.CultureInfo = new CultureInfo("en-US");
// Set the hash algorithm to 'SHA256'.
myAssemblyName.HashAlgorithm = AssemblyHashAlgorithm.SHA256;
myAssemblyName.Name = "MyAssembly";
myAssemblyName.Version = new Version("1.0.0.2001");
MakeAssembly(myAssemblyName, "MyAssembly.exe");
// Get all the assemblies currently loaded in the application domain.
Assembly[] myAssemblies = Thread.GetDomain().GetAssemblies();
// Get the dynamic assembly named 'MyAssembly'.
Assembly myAssembly = null;
for(int i = 0; i < myAssemblies.Length; i++)
{
if(String.Compare(myAssemblies[i].GetName().Name, "MyAssembly") == 0)
myAssembly = myAssemblies[i];
}
// Display the full assembly information to the console.
if(myAssembly != null)
{
Console.WriteLine("\nDisplaying the full assembly name\n");
Console.WriteLine(myAssembly.GetName().FullName);
}
}
}
Imports System.Reflection
Imports System.Threading
Imports System.IO
Imports System.Globalization
Imports System.Reflection.Emit
Imports System.Configuration.Assemblies
Public Class AssemblyName_CodeBase
Public Shared Sub MakeAssembly(myAssemblyName As AssemblyName, fileName As String)
' Get the assembly builder from the application domain associated with the current thread.
Dim myAssemblyBuilder As AssemblyBuilder = Thread.GetDomain().DefineDynamicAssembly(myAssemblyName, AssemblyBuilderAccess.RunAndSave)
' Create a dynamic module in the assembly.
Dim myModuleBuilder As ModuleBuilder = myAssemblyBuilder.DefineDynamicModule("MyModule", fileName)
' Create a type in the module.
Dim myTypeBuilder As TypeBuilder = myModuleBuilder.DefineType("MyType")
' Create a method called 'Main'.
Dim myMethodBuilder As MethodBuilder = myTypeBuilder.DefineMethod("Main", MethodAttributes.Public Or MethodAttributes.HideBySig Or MethodAttributes.Static, GetType(object), Nothing)
' Get the Intermediate Language generator for the method.
Dim myILGenerator As ILGenerator = myMethodBuilder.GetILGenerator()
' Use the utility method to generate the IL instructions that print a string to the console.
myILGenerator.EmitWriteLine("Hello World!")
' Generate the 'ret' IL instruction.
myILGenerator.Emit(OpCodes.Ret)
' End the creation of the type.
myTypeBuilder.CreateType()
' Set the method with name 'Main' as the entry point in the assembly.
myAssemblyBuilder.SetEntryPoint(myMethodBuilder)
myAssemblyBuilder.Save(fileName)
End Sub
Public Shared Sub Main()
' Create a dynamic assembly with name 'MyAssembly' and build version '1.0.0.2001'.
Dim myAssemblyName As New AssemblyName()
' Set the codebase to the physical directory were the assembly resides.
myAssemblyName.CodeBase = Directory.GetCurrentDirectory()
' Set the culture information of the assembly to 'English-American'.
myAssemblyName.CultureInfo = New CultureInfo("en-US")
' Set the hash algorithm to 'SHA256'.
myAssemblyName.HashAlgorithm = AssemblyHashAlgorithm.SHA256
myAssemblyName.Name = "MyAssembly"
myAssemblyName.Version = New Version("1.0.0.2001")
MakeAssembly(myAssemblyName, "MyAssembly.exe")
' Get all the assemblies currently loaded in the application domain.
Dim myAssemblies As [Assembly]() = Thread.GetDomain().GetAssemblies()
' Get the dynamic assembly named 'MyAssembly'.
Dim myAssembly As [Assembly] = Nothing
Dim i As Integer
For i = 0 To myAssemblies.Length - 1
If [String].Compare(myAssemblies(i).GetName().Name, "MyAssembly") = 0 Then
myAssembly = myAssemblies(i)
End If
Next i ' Display the full assembly information to the console.
If Not (myAssembly Is Nothing) Then
Console.WriteLine(vbCrLf & "Displaying the full assembly name" & vbCrLf)
Console.WriteLine(myAssembly.GetName().FullName)
End If
End Sub
End Class
Opmerkingen
Wanneer een assembly wordt geladen, kan deze waarde ook worden verkregen met behulp van de Assembly.CodeBase eigenschap.
Als de assembly is geladen als een bytematrix, retourneert deze eigenschap de locatie van de aanroeper van de Load(Byte[]) methodeoverbelasting, niet de locatie van de geladen assembly.
Note
Gebruik geen AssemblyName met alleen de CodeBase eigenschappenset. De CodeBase eigenschap levert geen elementen van de assembly-identiteit (zoals naam of versie), zodat laden niet plaatsvindt volgens regels voor laden per identiteit, zoals u zou verwachten van de Load methode. In plaats daarvan wordt de assembly geladen met behulp van regels voor laden vanuit. Zie de overbelasting van de Assembly.LoadFrom methode of aanbevolen procedures voor het laden van assembly's voor informatie over de nadelen van het gebruik van de load-from-context.