C# |类型。GetDefaultMembers()方法
原文:https://www . geeksforgeeks . org/c-sharp-type-getdefaultmembers-method/
类型。GetDefaultMembers()方法用于查找为当前类型定义的成员，该类型的 DefaultMemberAttribute 被设置。
语法:公共虚拟系统。反射. MemberInfo[]GetDefaultMembers()；
返回值:如果当前类型没有默认成员，该方法返回一个表示当前类型所有默认成员的成员信息对象数组或一个成员信息类型的空数组。
以下程序说明了类型的使用。GetDefaultMembers() 方法:
例 1:
// C# program to demonstrate the
// Type.GetDefaultMembers() Method
using System;
using System.Globalization;
using System.Reflection;
class GFG {
// Main Method
public static void Main()
{
// Declaring and initializing obj
object obj = "Ram";
// Getting the type of obj
// using GetType() Method
Type type = obj.GetType();
// Getting the DefaultMembers
// using GetDefaultMembers() Method
MemberInfo[] info = type.GetDefaultMembers();
// Display the result
for (int i = 0; i < info.Length; i++)
Console.WriteLine("Result is: {0}", info[i]);
}
}
Output:
Result is: Char Chars [Int32]
例 2:
// C# program to demonstrate the
// Type.GetDefaultMembers() Method
using System;
using System.Globalization;
using System.Reflection;
// Setting DefaultMemberAttribute
[DefaultMemberAttribute("name")] class GFG {
// Main Method
public static void Main()
{
// Declaring and initializing
// object of Type dataType
Type type = typeof(GFG);
// Getting the DefaultMembers
// using GetDefaultMembers() Method
MemberInfo[] info = type.GetDefaultMembers();
if (info.Length != 0)
{
for (int i = 0; i < info.Length; i++)
Console.WriteLine("Result is: {0}", info[i]);
}
else {
Console.WriteLine("DefaultMember is not found");
}
}
// Defining Member Attributes
public void Name(String s) {}
// Defining property
public String name
{
// property or indexer must
// have at least one accessor
get
{
return "Ram";
}
}
}
Output:
Result is: System.String name
参考:
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