TypeBuilder.DefineProperty Metod

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TypeBuilder.cs

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TypeBuilder.cs

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TypeBuilder.cs

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TypeBuilder.cs

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TypeBuilder.cs

public:
 System::Reflection::Emit::PropertyBuilder ^ DefineProperty(System::String ^ name, System::Reflection::PropertyAttributes attributes, Type ^ returnType, cli::array <Type ^> ^ parameterTypes);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, Type? returnType, Type[]? parameterTypes);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, Type returnType, Type[]? parameterTypes);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, Type returnType, Type[] parameterTypes);

member this.DefineProperty : string * System.Reflection.PropertyAttributes * Type * Type[] -> System.Reflection.Emit.PropertyBuilder

Public Function DefineProperty (name As String, attributes As PropertyAttributes, returnType As Type, parameterTypes As Type()) As PropertyBuilder

Parametrar

Returer

Den definierade egenskapen.

Undantag

Exempel

Följande kodexempel visar hur du definierar en dynamisk egenskap och hämtar en PropertyBuilder för specifikation. Observera att en PropertyBuilder måste också ha en motsvarande MethodBuilder, som kommer att innehålla IL-logiken för egenskapen.

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

class PropertyBuilderDemo
{
   public static Type BuildDynamicTypeWithProperties()
   {
        AppDomain myDomain = Thread.GetDomain();
        AssemblyName myAsmName = new AssemblyName();
        myAsmName.Name = "MyDynamicAssembly";

        // To generate a persistable assembly, specify AssemblyBuilderAccess.RunAndSave.
        AssemblyBuilder myAsmBuilder = myDomain.DefineDynamicAssembly(myAsmName,
                                                        AssemblyBuilderAccess.RunAndSave);
        // Generate a persistable single-module assembly.
        ModuleBuilder myModBuilder =
            myAsmBuilder.DefineDynamicModule(myAsmName.Name, myAsmName.Name + ".dll");

        TypeBuilder myTypeBuilder = myModBuilder.DefineType("CustomerData",
                                                        TypeAttributes.Public);

        FieldBuilder customerNameBldr = myTypeBuilder.DefineField("customerName",
                                                        typeof(string),
                                                        FieldAttributes.Private);

        // The last argument of DefineProperty is null, because the
        // property has no parameters. (If you don't specify null, you must
        // specify an array of Type objects. For a parameterless property,
        // use an array with no elements: new Type[] {})
        PropertyBuilder custNamePropBldr = myTypeBuilder.DefineProperty("CustomerName",
                                                         PropertyAttributes.HasDefault,
                                                         typeof(string),
                                                         null);

        // The property set and property get methods require a special
        // set of attributes.
        MethodAttributes getSetAttr =
            MethodAttributes.Public | MethodAttributes.SpecialName |
                MethodAttributes.HideBySig;

        // Define the "get" accessor method for CustomerName.
        MethodBuilder custNameGetPropMthdBldr =
            myTypeBuilder.DefineMethod("get_CustomerName",
                                       getSetAttr,
                                       typeof(string),
                                       Type.EmptyTypes);

        ILGenerator custNameGetIL = custNameGetPropMthdBldr.GetILGenerator();

        custNameGetIL.Emit(OpCodes.Ldarg_0);
        custNameGetIL.Emit(OpCodes.Ldfld, customerNameBldr);
        custNameGetIL.Emit(OpCodes.Ret);

        // Define the "set" accessor method for CustomerName.
        MethodBuilder custNameSetPropMthdBldr =
            myTypeBuilder.DefineMethod("set_CustomerName",
                                       getSetAttr,
                                       null,
                                       new Type[] { typeof(string) });

        ILGenerator custNameSetIL = custNameSetPropMthdBldr.GetILGenerator();

        custNameSetIL.Emit(OpCodes.Ldarg_0);
        custNameSetIL.Emit(OpCodes.Ldarg_1);
        custNameSetIL.Emit(OpCodes.Stfld, customerNameBldr);
        custNameSetIL.Emit(OpCodes.Ret);

        // Last, we must map the two methods created above to our PropertyBuilder to
        // their corresponding behaviors, "get" and "set" respectively.
        custNamePropBldr.SetGetMethod(custNameGetPropMthdBldr);
        custNamePropBldr.SetSetMethod(custNameSetPropMthdBldr);

        Type retval = myTypeBuilder.CreateType();

        // Save the assembly so it can be examined with Ildasm.exe,
        // or referenced by a test program.
        myAsmBuilder.Save(myAsmName.Name + ".dll");
        return retval;
   }

   public static void Main()
   {
        Type custDataType = BuildDynamicTypeWithProperties();

        PropertyInfo[] custDataPropInfo = custDataType.GetProperties();
        foreach (PropertyInfo pInfo in custDataPropInfo) {
           Console.WriteLine("Property '{0}' created!", pInfo.ToString());
        }

        Console.WriteLine("---");
        // Note that when invoking a property, you need to use the proper BindingFlags -
        // BindingFlags.SetProperty when you invoke the "set" behavior, and
        // BindingFlags.GetProperty when you invoke the "get" behavior. Also note that
        // we invoke them based on the name we gave the property, as expected, and not
        // the name of the methods we bound to the specific property behaviors.

        object custData = Activator.CreateInstance(custDataType);
        custDataType.InvokeMember("CustomerName", BindingFlags.SetProperty,
                                      null, custData, new object[]{ "Joe User" });

        Console.WriteLine("The customerName field of instance custData has been set to '{0}'.",
                           custDataType.InvokeMember("CustomerName", BindingFlags.GetProperty,
                                                      null, custData, new object[]{ }));
   }
}

// --- O U T P U T ---
// The output should be as follows:
// -------------------
// Property 'System.String CustomerName' created!
// ---
// The customerName field of instance custData has been set to 'Joe User'.
// -------------------

Imports System.Threading
Imports System.Reflection
Imports System.Reflection.Emit

Class PropertyBuilderDemo
   
   Public Shared Function BuildDynamicTypeWithProperties() As Type
      Dim myDomain As AppDomain = Thread.GetDomain()
      Dim myAsmName As New AssemblyName()
      myAsmName.Name = "MyDynamicAssembly"
      
      ' To generate a persistable assembly, specify AssemblyBuilderAccess.RunAndSave.
      Dim myAsmBuilder As AssemblyBuilder = myDomain.DefineDynamicAssembly(myAsmName, _
                                                        AssemblyBuilderAccess.RunAndSave)
      
      ' Generate a persistable, single-module assembly.
      Dim myModBuilder As ModuleBuilder = _
          myAsmBuilder.DefineDynamicModule(myAsmName.Name, myAsmName.Name & ".dll")
      
      Dim myTypeBuilder As TypeBuilder = myModBuilder.DefineType("CustomerData", TypeAttributes.Public)
      
      ' Define a private field to hold the property value.
      Dim customerNameBldr As FieldBuilder = myTypeBuilder.DefineField("customerName", _
                                             GetType(String), FieldAttributes.Private)
      
      ' The last argument of DefineProperty is Nothing, because the
      ' property has no parameters. (If you don't specify Nothing, you must
      ' specify an array of Type objects. For a parameterless property,
      ' use an array with no elements: New Type() {})
      Dim custNamePropBldr As PropertyBuilder = _
          myTypeBuilder.DefineProperty("CustomerName", _
                                       PropertyAttributes.HasDefault, _
                                       GetType(String), _
                                       Nothing)
      
      ' The property set and property get methods require a special
      ' set of attributes.
      Dim getSetAttr As MethodAttributes = _
          MethodAttributes.Public Or MethodAttributes.SpecialName _
              Or MethodAttributes.HideBySig

      ' Define the "get" accessor method for CustomerName.
      Dim custNameGetPropMthdBldr As MethodBuilder = _
          myTypeBuilder.DefineMethod("GetCustomerName", _
                                     getSetAttr, _
                                     GetType(String), _
                                     Type.EmptyTypes)
      
      Dim custNameGetIL As ILGenerator = custNameGetPropMthdBldr.GetILGenerator()
      
      custNameGetIL.Emit(OpCodes.Ldarg_0)
      custNameGetIL.Emit(OpCodes.Ldfld, customerNameBldr)
      custNameGetIL.Emit(OpCodes.Ret)
      
      ' Define the "set" accessor method for CustomerName.
      Dim custNameSetPropMthdBldr As MethodBuilder = _
          myTypeBuilder.DefineMethod("get_CustomerName", _
                                     getSetAttr, _
                                     Nothing, _
                                     New Type() {GetType(String)})
      
      Dim custNameSetIL As ILGenerator = custNameSetPropMthdBldr.GetILGenerator()
      
      custNameSetIL.Emit(OpCodes.Ldarg_0)
      custNameSetIL.Emit(OpCodes.Ldarg_1)
      custNameSetIL.Emit(OpCodes.Stfld, customerNameBldr)
      custNameSetIL.Emit(OpCodes.Ret)
      
      ' Last, we must map the two methods created above to our PropertyBuilder to 
      ' their corresponding behaviors, "get" and "set" respectively. 
      custNamePropBldr.SetGetMethod(custNameGetPropMthdBldr)
      custNamePropBldr.SetSetMethod(custNameSetPropMthdBldr)
            
      Dim retval As Type = myTypeBuilder.CreateType()

      ' Save the assembly so it can be examined with Ildasm.exe,
      ' or referenced by a test program.
      myAsmBuilder.Save(myAsmName.Name & ".dll")
      return retval
   End Function 'BuildDynamicTypeWithProperties
    
   
   Public Shared Sub Main()
      Dim custDataType As Type = BuildDynamicTypeWithProperties()
      
      Dim custDataPropInfo As PropertyInfo() = custDataType.GetProperties()
      Dim pInfo As PropertyInfo
      For Each pInfo In  custDataPropInfo
         Console.WriteLine("Property '{0}' created!", pInfo.ToString())
      Next pInfo
      
      Console.WriteLine("---")
      ' Note that when invoking a property, you need to use the proper BindingFlags -
      ' BindingFlags.SetProperty when you invoke the "set" behavior, and 
      ' BindingFlags.GetProperty when you invoke the "get" behavior. Also note that
      ' we invoke them based on the name we gave the property, as expected, and not
      ' the name of the methods we bound to the specific property behaviors.
      Dim custData As Object = Activator.CreateInstance(custDataType)
      custDataType.InvokeMember("CustomerName", BindingFlags.SetProperty, Nothing, _
                                custData, New Object() {"Joe User"})
      
      Console.WriteLine("The customerName field of instance custData has been set to '{0}'.", _
                        custDataType.InvokeMember("CustomerName", BindingFlags.GetProperty, _
                        Nothing, custData, New Object() {}))
   End Sub
End Class


' --- O U T P U T ---
' The output should be as follows:
' -------------------
' Property 'System.String CustomerName' created!
' ---
' The customerName field of instance custData has been set to 'Joe User'.
' -------------------

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

public:
 System::Reflection::Emit::PropertyBuilder ^ DefineProperty(System::String ^ name, System::Reflection::PropertyAttributes attributes, System::Reflection::CallingConventions callingConvention, Type ^ returnType, cli::array <Type ^> ^ parameterTypes);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, System.Reflection.CallingConventions callingConvention, Type? returnType, Type[]? parameterTypes);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, System.Reflection.CallingConventions callingConvention, Type returnType, Type[]? parameterTypes);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, System.Reflection.CallingConventions callingConvention, Type returnType, Type[] parameterTypes);

member this.DefineProperty : string * System.Reflection.PropertyAttributes * System.Reflection.CallingConventions * Type * Type[] -> System.Reflection.Emit.PropertyBuilder

Public Function DefineProperty (name As String, attributes As PropertyAttributes, callingConvention As CallingConventions, returnType As Type, parameterTypes As Type()) As PropertyBuilder

Parametrar

Returer

Den definierade egenskapen.

Undantag

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

public:
 System::Reflection::Emit::PropertyBuilder ^ DefineProperty(System::String ^ name, System::Reflection::PropertyAttributes attributes, Type ^ returnType, cli::array <Type ^> ^ returnTypeRequiredCustomModifiers, cli::array <Type ^> ^ returnTypeOptionalCustomModifiers, cli::array <Type ^> ^ parameterTypes, cli::array <cli::array <Type ^> ^> ^ parameterTypeRequiredCustomModifiers, cli::array <cli::array <Type ^> ^> ^ parameterTypeOptionalCustomModifiers);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, Type? returnType, Type[]? returnTypeRequiredCustomModifiers, Type[]? returnTypeOptionalCustomModifiers, Type[]? parameterTypes, Type[][]? parameterTypeRequiredCustomModifiers, Type[][]? parameterTypeOptionalCustomModifiers);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, Type returnType, Type[]? returnTypeRequiredCustomModifiers, Type[]? returnTypeOptionalCustomModifiers, Type[]? parameterTypes, Type[][]? parameterTypeRequiredCustomModifiers, Type[][]? parameterTypeOptionalCustomModifiers);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, Type returnType, Type[] returnTypeRequiredCustomModifiers, Type[] returnTypeOptionalCustomModifiers, Type[] parameterTypes, Type[][] parameterTypeRequiredCustomModifiers, Type[][] parameterTypeOptionalCustomModifiers);

member this.DefineProperty : string * System.Reflection.PropertyAttributes * Type * Type[] * Type[] * Type[] * Type[][] * Type[][] -> System.Reflection.Emit.PropertyBuilder

Public Function DefineProperty (name As String, attributes As PropertyAttributes, returnType As Type, returnTypeRequiredCustomModifiers As Type(), returnTypeOptionalCustomModifiers As Type(), parameterTypes As Type(), parameterTypeRequiredCustomModifiers As Type()(), parameterTypeOptionalCustomModifiers As Type()()) As PropertyBuilder

Parametrar

Returer

Den definierade egenskapen.

Undantag

Kommentarer

Den här överbelastningen tillhandahålls för designers av hanterade kompilatorer.

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

Källa:

TypeBuilder.cs

public:
 System::Reflection::Emit::PropertyBuilder ^ DefineProperty(System::String ^ name, System::Reflection::PropertyAttributes attributes, System::Reflection::CallingConventions callingConvention, Type ^ returnType, cli::array <Type ^> ^ returnTypeRequiredCustomModifiers, cli::array <Type ^> ^ returnTypeOptionalCustomModifiers, cli::array <Type ^> ^ parameterTypes, cli::array <cli::array <Type ^> ^> ^ parameterTypeRequiredCustomModifiers, cli::array <cli::array <Type ^> ^> ^ parameterTypeOptionalCustomModifiers);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, System.Reflection.CallingConventions callingConvention, Type? returnType, Type[]? returnTypeRequiredCustomModifiers, Type[]? returnTypeOptionalCustomModifiers, Type[]? parameterTypes, Type[][]? parameterTypeRequiredCustomModifiers, Type[][]? parameterTypeOptionalCustomModifiers);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, System.Reflection.CallingConventions callingConvention, Type returnType, Type[]? returnTypeRequiredCustomModifiers, Type[]? returnTypeOptionalCustomModifiers, Type[]? parameterTypes, Type[][]? parameterTypeRequiredCustomModifiers, Type[][]? parameterTypeOptionalCustomModifiers);

public System.Reflection.Emit.PropertyBuilder DefineProperty(string name, System.Reflection.PropertyAttributes attributes, System.Reflection.CallingConventions callingConvention, Type returnType, Type[] returnTypeRequiredCustomModifiers, Type[] returnTypeOptionalCustomModifiers, Type[] parameterTypes, Type[][] parameterTypeRequiredCustomModifiers, Type[][] parameterTypeOptionalCustomModifiers);

member this.DefineProperty : string * System.Reflection.PropertyAttributes * System.Reflection.CallingConventions * Type * Type[] * Type[] * Type[] * Type[][] * Type[][] -> System.Reflection.Emit.PropertyBuilder

Public Function DefineProperty (name As String, attributes As PropertyAttributes, callingConvention As CallingConventions, returnType As Type, returnTypeRequiredCustomModifiers As Type(), returnTypeOptionalCustomModifiers As Type(), parameterTypes As Type(), parameterTypeRequiredCustomModifiers As Type()(), parameterTypeOptionalCustomModifiers As Type()()) As PropertyBuilder

Parametrar

Returer

Den definierade egenskapen.

Undantag

Kommentarer

Den här överbelastningen tillhandahålls för designers av hanterade kompilatorer.

Den här metodöverlagringen introduceras i .NET Framework 3.5 eller senare.