CsSqlite

Extremely fast, robust, and lightweight SQLite bindings for .NET and Unity

English | 日本語

CsSqlite is a highly performant and lightweight SQLite binding built in C#. It provides an API equivalent to Microsoft.Data.Sqlite (the foundation package for EFCore SQLite) while achieving high performance through carefully tuned implementations.

Features

• Easy-to-use API
• High-performance implementation leveraging Span<T> and Unsafe
• Zero allocation, no additional memory allocation
• No dependencies
• Robust binding generation using Cysharp/csbindgen
• Supports Unity (Mono, IL2CPP)

Installation

NuGet packages

CsSqlite requires .NET Standard 2.1 or later. The package is available on NuGet.

.NET CLI

dotnet add package CsSqlite

Package Manager

Install-Package CsSqlite

Unity

For Unity, installation is possible via the Package Manager.

1. Open the Package Manager from Window > Package Manager
2. Click the "+" button > Add package from git URL
3. Enter the following URL:

https://github.com/nuskey8/CsSqlite.git?path=src/CsSqlite.Unity/Assets/CsSqlite.Unity

Alternatively, open Packages/manifest.json and add the following to the dependencies block:

{
    "dependencies": {
        "com.nuskey.sqlite3.unity": "https://github.com/nuskey8/CsSqlite.git?path=src/CsSqlite.Unity/Assets/CsSqlite.Unity"
    }
}

CsSqlite.Unity supports the following platforms:

Platform	Architecture	Supported	Notes
Windows	x64	✅
	x86	✅
	arm64	✅
macOS	x64	✅
	arm64 (Apple Silicon)	✅
	Universal (x64 + arm64)	✅
Linux	x64	✅ (untested)
	arm64	✅ (untested)
iOS	arm64	✅
	x64	✅
Android	arm64	✅

Quick Start

using CsSqlite;

// Open a SqliteConnection
using var connection = new SqliteConnection("example.db");
connection.Open();

// Execute SQL
connection.ExecuteNonQuery("""
CREATE TABLE IF NOT EXISTS user (
    id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
    age INTEGER NOT NULL,
    name TEXT NOT NULL
);
""");

// Overload accepting UTF-8 text
connection.ExecuteNonQuery("""
INSERT INTO user (id, name, age)
VALUES (1, 'Alice', 18),
       (2, 'Bob', 32),
       (3, 'Charlie', 25);
"""u8);

// Create a reader
using var reader = connection.ExecuteReader("""
SELECT name
FROM user
""");

// Read values using Read() / GetXXX(column)
while (reader.Read())
{
    Console.WriteLine($"{reader.GetString(0)}!");
}

SqliteCommand

To reuse the same query, use SqliteCommand.

using var command = connection.CreateCommand("""
SELECT name
FROM user
""");

using var reader = command.ExecuteReader();

You can also add parameters to SqliteCommand.

using var command = conn.CreateCommand("INSERT INTO t(val) VALUES($foo);");
command.Parameters.Add("$foo", "foo");
command.ExecuteNonQuery();

Exception Handling

If any error occurs during execution, a SqliteException is thrown. You can handle exceptions by catching this.

try
{
    // ...
}
catch (SqliteException ex)
{
    Console.WriteLine(ex.ErrorCode);
    Console.WriteLine(ex.Message);
}

License

This library is provided under the MIT License.