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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