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October 10, 2020 05:13
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using System; | |
using System.Collections.Generic; | |
using System.Linq; | |
namespace [YOURNAMESPACEHERE] | |
{ | |
public static class TypeExtensions | |
{ | |
public static bool IsDerivingFrom(this Type type, Type searchType) | |
{ | |
if (type == null) throw new NullReferenceException(); | |
return | |
type.BaseType != null && | |
(type.BaseType == searchType || | |
type.BaseType.IsDerivingFrom(searchType)); | |
} | |
public static bool IsDerivingFromGenericType(this Type type, Type searchGenericType) | |
{ | |
if (type == null) throw new ArgumentNullException(nameof(type)); | |
if (searchGenericType == null) throw new ArgumentNullException(nameof(searchGenericType)); | |
return | |
type != typeof(object) && | |
(type.IsGenericType && | |
searchGenericType.GetGenericTypeDefinition() == searchGenericType || | |
IsDerivingFromGenericType(type.BaseType, searchGenericType)); | |
} | |
[System.Diagnostics.CodeAnalysis.SuppressMessage("Style", "IDE0060:Remove unused parameter", Justification = "Extension method")] | |
public static Type GetItemType<T>(this IEnumerable<T> enumerable) => typeof(T); | |
public static Type? GetItemType(this object enumerable) | |
=> enumerable == null ? null : | |
(enumerable.GetType().GetInterface(typeof(IEnumerable<>).Name)?.GetGenericArguments()[0]); | |
public static bool ImplementsInterface(this Type? type, Type? @interface) | |
{ | |
bool result = false; | |
if (type == null || @interface == null) | |
return result; | |
var interfaces = type.GetInterfaces(); | |
if (@interface.IsGenericTypeDefinition) | |
{ | |
foreach (var item in interfaces) | |
{ | |
if (item.IsConstructedGenericType && item.GetGenericTypeDefinition() == @interface) | |
result = true; | |
} | |
} | |
else | |
{ | |
foreach (var item in interfaces) | |
{ | |
if (item == @interface) | |
result = true; | |
} | |
} | |
return result; | |
} | |
public static Type? FindType(this string name) | |
{ | |
Type? result = null; | |
var nonDynamicAssemblies = AppDomain.CurrentDomain.GetAssemblies().Where(a => !a.IsDynamic); | |
try | |
{ | |
result = nonDynamicAssemblies. | |
SelectMany(a => a.GetExportedTypes()). | |
FirstOrDefault(t => t.Name == name); | |
} | |
catch | |
{ | |
result = nonDynamicAssemblies. | |
SelectMany(a => a.GetTypes()). | |
FirstOrDefault(t => t.Name == name); | |
} | |
return result; | |
} | |
} | |
} |
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