ModuleBuilder.GetArrayMethod Method

Definition

Namespace:

System.Reflection.Emit

Assemblies:

netstandard.dll, System.Reflection.Emit.dll

Source:

ModuleBuilder.cs

Returns the named method on an array class.

C#

public System.Reflection.MethodInfo GetArrayMethod(Type arrayClass, string methodName, System.Reflection.CallingConventions callingConvention, Type? returnType, Type[]? parameterTypes);

Parameters

arrayClass

Type

An array class.

methodName

String

The name of a method on the array class.

callingConvention

CallingConventions

The method's calling convention.

returnType

Type

The return type of the method.

parameterTypes

Type[]

The types of the method's parameters.

Returns

MethodInfo

The named method on an array class.

Exceptions

ArgumentException

arrayClass is not an array.

ArgumentNullException

arrayClass or methodName is null.

Examples

The following example demonstrates how to use GetArrayMethod to obtain the MethodInfo corresponding to a method that returns an array value.

C#

// Define a dynamic module in "TempAssembly" assembly.
ModuleBuilder myModuleBuilder = myAssemblyBuilder.
                              DefineDynamicModule("TempModule");
// Define a runtime class with specified name and attributes.
TypeBuilder myTypeBuilder = myModuleBuilder.DefineType
                           ("TempClass",TypeAttributes.Public);
Type[] paramArray = {typeof(Array)};
// Add 'SortArray' method to the class, with the given signature.
MethodBuilder myMethod = myTypeBuilder.DefineMethod("SortArray",
                          MethodAttributes.Public,typeof(Array),paramArray);

Type[] myArrayClass = new Type[1];
Type[] parameterTypes = {typeof(Array)};
// Get the 'MethodInfo' object corresponding to 'Sort' method of 'Array' class.
MethodInfo myMethodInfo=myModuleBuilder.GetArrayMethod(
            myArrayClass.GetType(),"Sort",CallingConventions.Standard,
                                                                         null,parameterTypes);
// Get the token corresponding to 'Sort' method of 'Array' class.
MethodToken myMethodToken=myModuleBuilder.GetArrayMethodToken(
            myArrayClass.GetType(),"Sort",CallingConventions.Standard,
                                                                        null,parameterTypes);
Console.WriteLine("Token used by module to identify the 'Sort' method"
                            + " of 'Array' class is : {0:x} ",myMethodToken.Token);

ILGenerator methodIL = myMethod.GetILGenerator();
methodIL.Emit(OpCodes.Ldarg_1);
methodIL.Emit(OpCodes.Call,myMethodInfo);
methodIL.Emit(OpCodes.Ldarg_1);
methodIL.Emit(OpCodes.Ret);

// Complete the creation of type.
myTypeBuilder.CreateType();

Remarks

GetArrayMethod is useful when you have an array of a type whose definition has not been completed and you want to access methods defined on Array. For example, you might define a type and want to define a method that takes an array of the type as a parameter. In order to access the elements of the array, you will need to call methods of the Array class.

Applies to