Parse a date without a time component.
C#: DateOnly avoids attaching an irrelevant time or timezone to a calendar date.
using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.Json;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using System.Globalization;
using System.Security.Cryptography;
using System.Threading;
using System.Threading.Tasks;
var date = DateOnly.ParseExact("2026-10-10", "yyyy-MM-dd", CultureInfo.InvariantCulture);
Console.WriteLine(date.ToString("dd/MM/yyyy", CultureInfo.InvariantCulture));Expected output EXAMPLE
10/10/2026
Details
Use Program.cs in a .NET 8 console project and run dotnet run. Uses only the .NET standard libraries. DateOnly avoids attaching an irrelevant time or timezone to a calendar date.
Tested on Ubuntu 24.04.5 LTS · · 8.0.425 · libc6 2.39-0ubuntu8.9
Test inputs, results and environment
The exact published code ran in a dedicated Linux test container with prepared inputs. Unprivileged snippet process, external networking disabled, read-only root filesystem, and a fresh temporary working directory. Fixtures and output records are isolated from the application database. Testing covers this example and its stated checks, not every input, operating system, or runtime version. The Linux container shares its host's kernel; this is not a native Windows test.
- Architecture / host kernel
- x86_64 / 6.18.54.1-microsoft-standard-WSL2
- Snippet identity / locale
- uid=65534, gid=65534 (unprivileged) / C.UTF-8
- Interpreter invocation
dotnet build --no-restore && dotnet out/csharp.dll- Container image ID
sha256:32dc2d998158b6554c99b73b533f423696a0f3e31e8cbea9db10b5eee9a2fadd- Code SHA-256
3b1b5b9e520048b13396008304967c0c098ad1ed5ab58e5ef1ac5e8b6683dfae- Dependencies
- libc6 2.39-0ubuntu8.9
Test input setup
These are the prepared inputs used by the test harness. See Details above for the prerequisites and how to run this example.
# No input files required.
Observed standard output
10/10/2026
Exit code: 0. Standard error: empty. Validation: Exact stdout comparison. System-dependent values above are one recorded run.