Returns an array of classes accepted by the given filter and filter criteria.
Assembly: mscorlib (in mscorlib.dll)
Public Overridable Function FindTypes ( _
filter As TypeFilter, _
filterCriteria As Object _
) As Type()public virtual Type[] FindTypes(
TypeFilter filter,
Object filterCriteria
)public:
virtual array<Type^>^ FindTypes(
TypeFilter^ filter,
Object^ filterCriteria
)abstract FindTypes :
filter:TypeFilter *
filterCriteria:Object -> Type[]
override FindTypes :
filter:TypeFilter *
filterCriteria:Object -> Type[] Parameters
- filter
- Type: System.Reflection
. . :: . TypeFilter
The delegate used to filter the classes.
- filterCriteria
- Type: System
. . :: . Object
An Object used to filter the classes.
Return Value
Type:An array of type Type containing classes that were accepted by the filter.
| Exception | Condition |
|---|---|
| ReflectionTypeLoadException | One or more classes in a module could not be loaded. |
ReflectionTypeLoadException is a special class load exception. The ReflectionTypeLoadException.Types property contains the array of classes that were defined in the module and were loaded. This array may contain some null values. The ReflectionTypeLoadException.LoaderExceptions property is an array of exceptions that represent the exceptions that were thrown by the class loader. The holes in the class array line up with the exceptions.
The 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. If filter returns a particular class, that class will be included in the returned array. If filter returns
FindTypes cannot be used to look up parameterized types such as arrays.
The following example demonstrates the FindTypes method.
Imports System
Imports System.Reflection
Namespace ReflectionModule_Examples
Class MyMainClass
Shared Sub Main()
Dim moduleArray() As [Module]
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.
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 'Main
End Class 'MyMainClass
Class MySecondClass
End Class 'MySecondClass
' This class does not fit the filter criteria My*.
Class YourClass
End Class 'YourClass
End Namespace 'ReflectionModule_Examples
using System;
using System.Reflection;
namespace ReflectionModule_Examples
{
class MyMainClass
{
static void Main()
{
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];
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
{
}
}
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 );
}
}
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.