Module.FindTypes(TypeFilter, Object) 方法

定义

返回给定筛选器和筛选条件接受的类数组。Returns an array of classes accepted by the given filter and filter criteria.

public:
 virtual cli::array <Type ^> ^ FindTypes(System::Reflection::TypeFilter ^ filter, System::Object ^ filterCriteria);
public virtual Type[] FindTypes (System.Reflection.TypeFilter filter, object filterCriteria);
abstract member FindTypes : System.Reflection.TypeFilter * obj -> Type[]
override this.FindTypes : System.Reflection.TypeFilter * obj -> Type[]
Public Overridable Function FindTypes (filter As TypeFilter, filterCriteria As Object) As Type()

参数

filter
TypeFilter

用于筛选类的委托。The delegate used to filter the classes.

filterCriteria
Object

用于筛选类的对象。An Object used to filter the classes.

返回

Type[]

类型 Type 的数组,包含已被筛选器接受的类。An array of type Type containing classes that were accepted by the filter.

异常

无法加载模块中的一个或多个类。One or more classes in a module could not be loaded.

示例

下面的示例演示 FindTypes 方法。The following example demonstrates the FindTypes method.

using namespace System;
using namespace System::Reflection;
using namespace System::Collections;
public ref class MySecondClass{};


// This class does not fit the filter criterion My*.
public ref class YourClass{};

int main()
{
   array<Module^>^moduleArray;
   moduleArray = Assembly::GetExecutingAssembly()->GetModules( false );
   
   // In a simple project with only one module, the module at index
   // 0 will be the module containing these classes.
   Module^ myModule = moduleArray[ 0 ];
   array<Type^>^tArray;
   tArray = myModule->FindTypes( Module::FilterTypeName, "My*" );
   IEnumerator^ myEnum = tArray->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Type^ t = safe_cast<Type^>(myEnum->Current);
      Console::WriteLine( "Found a module beginning with My*: {0}.", t->Name );
   }
}

using System;
using System.Reflection;

namespace ReflectionModule_Examples
{
    class MyMainClass
    {
        static void Main()
        {
            Module[] moduleArray;
            
            moduleArray = typeof(MyMainClass).Assembly.GetModules(false);
            
            // In a simple project with only one module, the module at index
            // 0 will be the module containing these classes.
            Module myModule = moduleArray[0];

            Type[] tArray;

            tArray = myModule.FindTypes(Module.FilterTypeName, "My*");
            
            foreach(Type t in tArray)
            {
                Console.WriteLine("Found a module beginning with My*: {0}.", t.Name);
            }
        }
    }

    class MySecondClass
    {
    }

    // This class does not fit the filter criteria My*.
    class YourClass
    {
    }
}
Imports System.Reflection

Namespace ReflectionModule_Examples
    Class MyMainClass
        Shared Sub Main()
            Dim moduleArray() As [Module]

            moduleArray = GetType(MyMainClass).Assembly.GetModules(False)

            ' In a simple project with only one module, the module at index
            ' 0 will be the module containing these classes.
            Dim myModule As [Module] = moduleArray(0)

            Dim tArray() As Type

            tArray = myModule.FindTypes([Module].FilterTypeName, "My*")

            Dim t As Type
            For Each t In tArray
                Console.WriteLine("Found a module beginning with My*: {0}", t.Name)
            Next t
        End Sub
    End Class

    Class MySecondClass
    End Class

    ' This class does not fit the filter criteria My*.
    Class YourClass
    End Class
End Namespace 'ReflectionModule_Examples

注解

ReflectionTypeLoadException 是一个特殊的类加载异常。ReflectionTypeLoadException is a special class load exception. @No__t-0 属性包含已在模块中定义并加载的类的数组。The ReflectionTypeLoadException.Types property contains the array of classes that were defined in the module and were loaded. 此数组可能包含一些 null 值。This array may contain some null values. @No__t-0 属性是一个异常数组,表示由类加载程序引发的异常。The ReflectionTypeLoadException.LoaderExceptions property is an array of exceptions that represent the exceptions that were thrown by the class loader. 类数组中的孔与异常一起排列。The holes in the class array line up with the exceptions.

为模块中的每个类调用 filter 给定的委托,同时传递表示该类的 Type 对象以及给定的 filterCriteriaThe delegate given by filter is called for each class in the module, passing along the Type object representing the class as well as the given filterCriteria. 如果 filter 返回特定类,则此类将包含在返回的数组中。If filter returns a particular class, that class will be included in the returned array. 如果 filter 返回 null,则返回所有类并忽略 filterCriteriaIf filter returns null, all classes are returned and filterCriteria is ignored.

FindTypes 不能用于查找数组等参数化类型。FindTypes cannot be used to look up parameterized types such as arrays.

适用于

另请参阅