本文整理汇总了C#中System.Type.IsAssignableFrom方法的典型用法代码示例。如果您正苦于以下问题：C# Type.IsAssignableFrom方法的具体用法？C# Type.IsAssignableFrom怎么用？C# Type.IsAssignableFrom使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Type的用法示例。
在下文中一共展示了Type.IsAssignableFrom方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using System.Collections.Generic;
class Program
{
public static void Main()
{
// Demonstrate classes:
Console.WriteLine("Defined Classes:");
Room room1 = new Room();
Kitchen kitchen1 = new Kitchen();
Bedroom bedroom1 = new Bedroom();
Guestroom guestroom1 = new Guestroom();
MasterBedroom masterbedroom1 = new MasterBedroom();
Type room1Type = room1.GetType();
Type kitchen1Type = kitchen1.GetType();
Type bedroom1Type = bedroom1.GetType();
Type guestroom1Type = guestroom1.GetType();
Type masterbedroom1Type = masterbedroom1.GetType();
Console.WriteLine("room assignable from kitchen: {0}", room1Type.IsAssignableFrom(kitchen1Type));
Console.WriteLine("bedroom assignable from guestroom: {0}", bedroom1Type.IsAssignableFrom(guestroom1Type));
Console.WriteLine("kitchen assignable from masterbedroom: {0}", kitchen1Type.IsAssignableFrom(masterbedroom1Type));
// Demonstrate arrays:
Console.WriteLine();
Console.WriteLine("Integer arrays:");
int[] array2 = new int[2];
int[] array10 = new int[10];
int[,] array22 = new int[2, 2];
int[,] array24 = new int[2, 4];
Type array2Type = array2.GetType();
Type array10Type = array10.GetType();
Type array22Type = array22.GetType();
Type array24Type = array24.GetType();
Console.WriteLine("int[2] assignable from int[10]: {0}", array2Type.IsAssignableFrom(array10Type));
Console.WriteLine("int[2] assignable from int[2,4]: {0}", array2Type.IsAssignableFrom(array24Type));
Console.WriteLine("int[2,4] assignable from int[2,2]: {0}", array24Type.IsAssignableFrom(array22Type));
// Demonstrate generics:
Console.WriteLine();
Console.WriteLine("Generics:");
// Note that "int?[]" is the same as "Nullable<int>[]"
int?[] arrayNull = new int?[10];
List<int> genIntList = new List<int>();
List<Type> genTList = new List<Type>();
Type arrayNullType = arrayNull.GetType();
Type genIntListType = genIntList.GetType();
Type genTListType = genTList.GetType();
Console.WriteLine("int[10] assignable from int?[10]: {0}", array10Type.IsAssignableFrom(arrayNullType));
Console.WriteLine("List<int> assignable from List<Type>: {0}", genIntListType.IsAssignableFrom(genTListType));
Console.WriteLine("List<Type> assignable from List<int>: {0}", genTListType.IsAssignableFrom(genIntListType));
Console.ReadLine();
}
}
class Room
{
}
class Kitchen : Room
{
}
class Bedroom : Room
{
}
class Guestroom : Bedroom
{
}
class MasterBedroom : Bedroom
{
}输出：
Defned Classes: room assignable from kitchen: True bedroom assignable from guestroom: True kitchen assignable from masterbedroom: False Integer arrays: int[2] assignable from int[10]: True int[2] assignable from int[2,4]: False int[2,4] assignable from int[2,2]: True Generics: int[10] assignable from int?[10]: False Listassignable from List : False List assignable from List : False
示例2: Main
//引入命名空间
using System;
using System.IO;
public class Example
{
public static void Main()
{
Type t = typeof(Stream);
Type genericT = typeof(GenericWithConstraint<>);
Type genericParam = genericT.GetGenericArguments()[0];
Console.WriteLine(t.IsAssignableFrom(genericParam));
// Displays True.
}
}
public class GenericWithConstraint<T> where T : Stream
{}示例3: Main
//引入命名空间
using System;
using System.Collections;
public class Example
{
public static void Main()
{
Type t = typeof(IEnumerable);
Type c = typeof(Array);
IEnumerable instanceOfT;
int[] instanceOfC = { 1, 2, 3, 4 };
if (t.IsAssignableFrom(c))
instanceOfT = instanceOfC;
}
}示例4: Main
//引入命名空间
using System;
using System.Reflection;
using System.Reflection.Emit;
public class A
{}
public class Example
{
public static void Main()
{
AppDomain domain = AppDomain.CurrentDomain;
AssemblyName assemName = new AssemblyName();
assemName.Name = "TempAssembly";
// Define a dynamic assembly in the current application domain.
AssemblyBuilder assemBuilder = domain.DefineDynamicAssembly(assemName,
AssemblyBuilderAccess.Run);
// Define a dynamic module in this assembly.
ModuleBuilder moduleBuilder = assemBuilder.DefineDynamicModule("TempModule");
TypeBuilder b1 = moduleBuilder.DefineType("B", TypeAttributes.Public, typeof(A));
Console.WriteLine(typeof(A).IsAssignableFrom(b1));
}
}输出：
True