AssemblyName.CodeBase Свойство

Определение

Пространство имен:

System.Reflection

Сборки:

netstandard.dll, System.Runtime.dll

Исходный код:

AssemblyName.cs

Внимание

AssemblyName.CodeBase and AssemblyName.EscapedCodeBase are obsolete. Using them for loading an assembly is not supported.

Возвращает или задает расположение сборки в качестве URL-адреса.

public:
 property System::String ^ CodeBase { System::String ^ get(); void set(System::String ^ value); };

[System.Obsolete("AssemblyName.CodeBase and AssemblyName.EscapedCodeBase are obsolete. Using them for loading an assembly is not supported.", DiagnosticId="SYSLIB0044", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public string? CodeBase { get; set; }

[<System.Obsolete("AssemblyName.CodeBase and AssemblyName.EscapedCodeBase are obsolete. Using them for loading an assembly is not supported.", DiagnosticId="SYSLIB0044", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
member this.CodeBase : string with get, set

Public Property CodeBase As String

Значение свойства

String

Строка, которая является URL-адресом сборки.

Атрибуты

ObsoleteAttribute

Примеры

В следующем примере создается динамическая сборка и сохраняется в текущем каталоге. При создании CodeBase сборки свойство используется для указания каталога, в котором сохраняется сборка.

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

Комментарии

При загрузке сборки это значение также можно получить с помощью Assembly.CodeBase свойства.

Если сборка была загружена в виде массива байтов, это свойство возвращает расположение вызывающего Load(Byte[]) перегрузки метода, а не расположение загруженной сборки.

Замечание

Не используйте AssemblyName только CodeBase набор свойств. Свойство CodeBase не предоставляет никакие элементы удостоверения сборки (например, имя или версия), поэтому загрузка не выполняется в соответствии с правилами удостоверений по нагрузке, так как вы ожидаете от Load метода. Вместо этого сборка загружается с помощью правил загрузки. Сведения о недостатках использования контекста загрузки см. в перегрузке Assembly.LoadFrom метода или рекомендациях по загрузке сборок.