FR CSharp Keyword throw - LIHACHTETAN/ClassicUO-Bad-Newbie-CSharp-Scripts-IDE GitHub Wiki
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C#: throw
Lance ou relance une exception. lancer; dans catch stocke la pile initiale.
Exemple simple (Example.cs)
Enregistrez cet exemple séparément dans Example.cs. Exécutez-le indépendamment des autres exemples de cette page.
Example.cs:
// PROJECT-EXAMPLE
try { throw new System.InvalidOperationException("Stop"); }
catch (System.InvalidOperationException error) { System.Console.WriteLine(error.Message); }
Résultat:
Stop
Syntaxe
throw new Exception(...); / throw;
Exemple 1 : formulaire de base
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
public static class Program
{
public static async Task Main(string[] args)
{
try { int number = int.Parse("invalid"); Console.WriteLine(number); }
catch (FormatException error) { Console.WriteLine(error.Message); }
finally { Console.WriteLine("Finished"); }
}
}
Exemple 2 : une autre forme pratique
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
public static class Program
{
public static async Task Main(string[] args)
{
try { Validation.Positive(-1); }
catch (ArgumentOutOfRangeException error) when (error.ParamName == "value") { Console.WriteLine("Negative value"); }
finally { Console.WriteLine("Cleanup"); }
}
}
public static class Validation { public static void Positive(int value) { if (value < 0) throw new ArgumentOutOfRangeException(nameof(value)); } }
Source officielle : Microsoft Apprendre.