How Do You Obtain Module Type Objects?
Answers
public virtual Type[] FindTypes (System.Reflection.TypeFilter filter, object filterCriteria);
Parameters
filter
TypeFilter
The delegate used to filter the classes.
filterCriteria
Object
An Object used to filter the classes.
Returns
Type[]
An array of type Type containing classes that were accepted by the filter.
Exceptions
ReflectionTypeLoadException
One or more classes in a module could not be loaded.
Examples
The following example demonstrates the FindTypes method.
C#
Copy
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
{
}
}
Remarks
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 null, all classes are returned and filterCriteria is ignored.