FieldBuilder.Name Proprietà

Definizione

Indica il nome del campo.Indicates the name of this field. Questa proprietà è di sola lettura.This property is read-only.

public:
 virtual property System::String ^ Name { System::String ^ get(); };
public override string Name { get; }
member this.Name : string
Public Overrides ReadOnly Property Name As String

Valore della proprietà

Oggetto String contenente il nome del campo.A String containing the name of this field.

Commenti

Nell'esempio di codice riportato di seguito viene illustrato l'utilizzo di Name.The following code sample illustrates the use of Name.

using System;
using System.Reflection;
using System.Reflection.Emit;

public class FieldBuilder_Sample
{
   private static Type CreateType()
   {
      // Create an assembly.
      AssemblyName assemName = new AssemblyName();
      assemName.Name = "DynamicAssembly";
      AssemblyBuilder assemBuilder =
                     AssemblyBuilder.DefineDynamicAssembly(assemName, AssemblyBuilderAccess.Run);
      // Create a dynamic module in Dynamic Assembly.
      ModuleBuilder modBuilder = assemBuilder.DefineDynamicModule("DynamicModule");
      // Define a public class named "DynamicClass" in the assembly.
      TypeBuilder typBuilder = modBuilder.DefineType("DynamicClass", TypeAttributes.Public);

      // Define a private String field named "DynamicField" in the type.
      FieldBuilder fldBuilder = typBuilder.DefineField("DynamicField",
          typeof(string), FieldAttributes.Private | FieldAttributes.Static);
      // Create the constructor.
      Type[] constructorArgs = { typeof(String) };
      ConstructorBuilder constructor = typBuilder.DefineConstructor(
         MethodAttributes.Public, CallingConventions.Standard, constructorArgs);
      ILGenerator constructorIL = constructor.GetILGenerator();
      constructorIL.Emit(OpCodes.Ldarg_0);
      ConstructorInfo superConstructor = typeof(Object).GetConstructor(new Type[0]);
      constructorIL.Emit(OpCodes.Call, superConstructor);
      constructorIL.Emit(OpCodes.Ldarg_0);
      constructorIL.Emit(OpCodes.Ldarg_1);
      constructorIL.Emit(OpCodes.Stfld, fldBuilder);
      constructorIL.Emit(OpCodes.Ret);

      // Create the DynamicMethod method.
      MethodBuilder methBuilder= typBuilder.DefineMethod("DynamicMethod",
                           MethodAttributes.Public,typeof(String),null);
      ILGenerator methodIL = methBuilder.GetILGenerator();
      methodIL.Emit(OpCodes.Ldarg_0);
      methodIL.Emit(OpCodes.Ldfld, fldBuilder);
      methodIL.Emit(OpCodes.Ret);

      Console.WriteLine($"Name               : {fldBuilder.Name}");
      Console.WriteLine($"DeclaringType      : {fldBuilder.DeclaringType}");
      Console.WriteLine($"Type               : {fldBuilder.FieldType}");
      return typBuilder.CreateType();
   }

   public static void Main()
   {
      Type dynType = CreateType();
      try
      {
         // Create an instance of the "HelloWorld" class.
         Object helloWorld = Activator.CreateInstance(dynType, new Object[] { "HelloWorld" });
         // Invoke the "DynamicMethod" method of the "DynamicClass" class.
         Object obj  = dynType.InvokeMember("DynamicMethod",
                        BindingFlags.InvokeMethod, null, helloWorld, null);
         Console.WriteLine($"DynamicClass.DynamicMethod returned: \"{obj}\"");
      }
      catch(MethodAccessException e)
      {
         Console.WriteLine($"{e.GetType().Name}: {e.Message}");
      }
  }
}
Imports System.Reflection
Imports System.Reflection.Emit

Public Module FieldBuilder_Sample
   Private Function CreateType() As Type
      ' Create an assembly.
      Dim assemName As New AssemblyName()
      assemName.Name = "DynamicAssembly"
      Dim assemBuilder As AssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(assemName,
                                                AssemblyBuilderAccess.Run)
      ' Create a dynamic module in Dynamic Assembly.
      Dim modBuilder As ModuleBuilder = assemBuilder.DefineDynamicModule("DynamicModule")
      ' Define a public class named "DynamicClass" in the assembly.
      Dim typBuilder As TypeBuilder = modBuilder.DefineType("DynamicClass", 
                                          TypeAttributes.Public)
      ' Define a private String field named "DynamicField" in the type.
      Dim fldBuilder As FieldBuilder = typBuilder.DefineField("DynamicField",
                  GetType(String), FieldAttributes.Private Or FieldAttributes.Static)
      ' Create the constructor.
      Dim constructorArgs As Type() = {GetType(String)}
      Dim constructor As ConstructorBuilder = 
                  typBuilder.DefineConstructor(MethodAttributes.Public, 
                           CallingConventions.Standard, constructorArgs)
      Dim constructorIL As ILGenerator = constructor.GetILGenerator()
      constructorIL.Emit(OpCodes.Ldarg_0)
      Dim superConstructor As ConstructorInfo = GetType(Object).GetConstructor(New Type() {})
      constructorIL.Emit(OpCodes.Call, superConstructor)
      constructorIL.Emit(OpCodes.Ldarg_0)
      constructorIL.Emit(OpCodes.Ldarg_1)
      constructorIL.Emit(OpCodes.Stfld, fldBuilder)
      constructorIL.Emit(OpCodes.Ret)

      ' Create the DynamicMethod method.
      Dim methBuilder As MethodBuilder = typBuilder.DefineMethod("DynamicMethod", 
                        MethodAttributes.Public, GetType(String), Nothing)
      Dim methodIL As ILGenerator = methBuilder.GetILGenerator()
      methodIL.Emit(OpCodes.Ldarg_0)
      methodIL.Emit(OpCodes.Ldfld, fldBuilder)
      methodIL.Emit(OpCodes.Ret)

      Console.WriteLine($"Name               : {fldBuilder.Name}")
      Console.WriteLine($"DeclaringType      : {fldBuilder.DeclaringType}")
      Console.WriteLine($"Type               : {fldBuilder.FieldType}")
      Return typBuilder.CreateType()
   End Function 

   Public Sub Main()
      Dim dynType As Type = CreateType()
      Try  
        ' Create an instance of the "HelloWorld" class.
         Dim helloWorld As Object = Activator.CreateInstance(dynType, New Object() {"HelloWorld"})
         ' Invoke the "DynamicMethod" method of the "DynamicClass" class.
         Dim obj As Object = dynType.InvokeMember("DynamicMethod", 
                  BindingFlags.InvokeMethod, Nothing, helloWorld, Nothing)
         Console.WriteLine($"DynamicClass.DynamicMethod returned: ""{obj}""")
      Catch e As MethodAccessException
            Console.WriteLine($"{e.GetType().Name}: {e.Message}")
      End Try
   End Sub 
End Module

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