C#中通过Type类可以访问任意数据类型信息。
1.获取给定类型的Type引用有3种方式:
a.使用typeof运算符,如Type t = typeof(int);
b.使用GetType()方法,如int i;Type t = i.GetType();
c.使用Type类的静态方法GetType(),如Type t =Type.GetType("System.Double");
2.Type的属性:
Name:数据类型名;
FullName:数据类型的完全限定名,包括命名空间;
Namespace:数据类型的命名空间;
BaseType:直接基本类型;
UnderlyingSystemType:映射类型;
3.Type的方法:
GetMethod():返回一个方法的信息;
GetMethods():返回所有方法的信息。
TestType.cs:
using System;
using System.Reflection;
namespace Magci.Test.Reflection
{
public class TestType
{
public static void Main()
{
//基本数据类型
Type intType = typeof(int);
//属性
Console.WriteLine("intType.Name = " + intType.Name);
Console.WriteLine("intType.FullName = " + intType.FullName);
Console.WriteLine("intType.Namespace = " + intType.Namespace);
Console.WriteLine("intType.IsAbstract = " + intType.IsAbstract);
Console.WriteLine("intType.IsClass = " + intType.IsClass);
Console.WriteLine("intType.IsEnum = " + intType.IsEnum);
Console.WriteLine("intType.IsPrimitive = " + intType.IsPrimitive);
Console.WriteLine("intType.IsValueType = " + intType.IsValueType);
//方法
MethodInfo[] methods = intType.GetMethods();
foreach (MethodInfo method in methods)
{
Console.WriteLine(method.DeclaringType + " " + method.MemberType + " " + method.Name);
}
}
}
} TestTypeView.cs: using System;
using System.Text;
using System.Windows.Forms;
using System.Reflection;
namespace Magci.Test.Reflection
{
public class TestTypeView
{
public static StringBuilder OutputText = new StringBuilder();
public static void Main()
{
Type t = typeof(double);
AnalyzeType(t);
MessageBox.Show(OutputText.ToString());
}
public static void AnalyzeType(Type t)
{
//数据类型名
OutputText.Append("\nType Name: " + t.Name);
//数据类型的完全限定名,包括命名空间
OutputText.Append("\nFull Name: " + t.FullName);
//数据类型的命名空间
OutputText.Append("\nNamespace: " + t.Namespace);
//直接基本类型
Type tBase = t.BaseType;
if (tBase != null)
{
OutputText.Append("\nBase Type: " + tBase.Name);
}
//映射类型
Type tUnderlyingSystem = t.UnderlyingSystemType;
if (tUnderlyingSystem != null)
{
OutputText.Append("\nUnderlyingSystem Type: " + tUnderlyingSystem.Name);
}
//所有公共方法
OutputText.Append("\n\nPublic members:");
MemberInfo[] methods = t.GetMethods();
foreach (MemberInfo method in methods)
{
OutputText.Append("\n" + method.DeclaringType + " " + method.MemberType + "" + method.Name);
}
}
}
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