Rich, interactive C# code snippets
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Place // ^? markers below any token to show its type signature and documentation inline. Readers see exactly what they'd see in their IDE.

// @noErrors
var items = new List<int> { 1, 2, 3 };
var count = items.Count;
//  ^?

var items = new List<int> { 1, 2, 3 };
var count = items.Count;
//  ^?

Full extraction of <summary>, <param>, <returns>, <remarks>, and <exception> tags. Rendered in structured, readable popups.

// @noErrors
var items = new List<int> { 1, 2, 3 };
//              ^?
var total = items.Sum();

var items = new List<int> { 1, 2, 3 };
//              ^?
var total = items.Sum();

Expect specific compiler errors with // @errors: CS1002. Verify error messages and severity. Use // @noErrors to assert clean compilation.

// @errors: CS0029
int x = "hello";

// @errors: CS0029
int x = "hello";

Assert your snippets compile cleanly with // @noErrors. Catch documentation bugs in CI before your readers find them.

// @noErrors
var items = new List<int> { 1, 2, 3 };
var sum = items.Sum();
Console.WriteLine($"Sum: {sum}");

// @noErrors
var items = new List<int> { 1, 2, 3 };
var sum = items.Sum();
Console.WriteLine($"Sum: {sum}");

Highlight, focus, and diff lines with // @highlight, // @focus, and // @diff: +/-. Guide your reader's attention to what matters.

// @suppressErrors
var config = LoadConfig();
var conn = config.GetConnection();
// @highlight
var db = new DbContext(conn);

var config = LoadConfig();
var conn = config.GetConnection();
// @highlight
var db = new DbContext(conn);

Extract named #region blocks from full source files. The entire file compiles for accurate types, but only the region appears in output.

// @suppressErrors
// @hide
public class User {
  public string First { get; set; }
  public string Last { get; set; }
// @show
  public string FullName
    => $"{First} {Last}";
// @hide
}

public class User {
  public string First { get; set; }
  public string Last { get; set; }
  #region FullName
  public string FullName
    => $"{First} {Last}";
  #endregion
}

Hide boilerplate with // ---cut--- or // @hide/// @show. Setup code compiles but doesn't appear in the rendered snippet.

#:sdk Microsoft.NET.Sdk.Web
var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();
// ---cut---
app.MapGet("/", () => "Hello");
app.Run();

#:sdk Microsoft.NET.Sdk.Web
var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();
// ---cut---
app.MapGet("/", () => "Hello");
app.Run();

On .NET 10+, use #:package and #:sdk directives directly in your code. No separate .csproj needed—your snippet is valid C# and Glo# input.

#:package Newtonsoft.Json@13.0.3
using Newtonsoft.Json;
var json = JsonConvert.SerializeObject(new { x = 1 });

#:package Newtonsoft.Json@13.0.3
using Newtonsoft.Json;
var json = JsonConvert.SerializeObject(new { x = 1 });

In-process compilation context cache plus SHA256-keyed disk cache. Rebuilds are fast. Atomic writes handle concurrent processes safely.

$ glosharp verify samples/ --cache-dir .glosharp-cache
✓ 24 files verified (18 cached)
  Completed in 1.2s