C# |类型。GetTypeArray()方法
原文:https://www . geeksforgeeks . org/c-sharp-type-gettypelarray-method/
类型。GetTypeArray()方法用于获取指定数组中对象的类型。
语法:公共静态类型[] GetTypeArray(对象[]args)； 这里，需要一个对象数组来确定对象的类型。
返回值:这个方法返回一个 Type 对象的数组，表示 args 中对应元素的类型。
异常:如果参数为空或者参数中的一个或多个元素为空，则该方法抛出参数异常。
以下程序说明了类型的使用。gettypelarray()方法:
例 1:
// C# program to demonstrate the
// Type.GetTypeArray(Object[]) Method
using System;
using System.Globalization;
using System.Reflection;
// Defining class Empty
public class Empty { }
class GFG {
// Main Method
public static void Main()
{
// try-catch block for handling Exception
try {
// creating and initializing object
object[] obj = {2, 3.4, 'c', "ram"};
// using GetProperties() Method
Type[] type = Type.GetTypeArray(obj);
// Display the Result
Console.WriteLine("Types of the objects in the specified array: ");
for (int i = 0; i < type.Length; i++)
Console.WriteLine(" {0}", type[i]);
}
// catch ArgumentNullException here
catch (ArgumentNullException e)
{
Console.Write("One or more of the elements in args is null.");
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}
Output:
Types of the objects in the specified array:
System.Int32
System.Double
System.Char
System.String
例 2:
// C# program to demonstrate the
// Type.GetTypeArray(Object[]) Method
using System;
using System.Globalization;
using System.Reflection;
// Defining class Empty
public class Empty {}
class GFG {
// Main Method
public static void Main()
{
// try-catch block for handling Exception
try {
// creating and initializing object
object[] obj = {2, 3.4, 'c', "ram", null};
// using GetProperties() Method
Type[] type = Type.GetTypeArray(obj);
// Display the Result
Console.WriteLine("Types of the objects in the specified array: ");
for (int i = 0; i < type.Length; i++)
Console.WriteLine(" {0}", type[i]);
}
// catch ArgumentNullException here
catch (ArgumentNullException e)
{
Console.WriteLine("One or more of the elements in args is null.");
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}
Output:
One or more of the elements in args is null.
Exception Thrown: System.ArgumentNullException
参考:
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