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SpacetimeDB C#/.NET client SDK reference. Use when building C# clients that connect to SpacetimeDB (console, desktop, or any .NET app).
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/clockworklabs/SpacetimeDB --skill csharp-client命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
SpacetimeDB C# server module SDK reference. Use when writing tables, reducers, or module logic in C#.
SpacetimeDB Rust server module SDK reference. Use when writing tables, reducers, or module logic in Rust.
SpacetimeDB TypeScript server module SDK reference. Use when writing tables, reducers, or module logic in TypeScript.
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基于 SOC 职业分类
| name | csharp-client |
| description | SpacetimeDB C#/.NET client SDK reference. Use when building C# clients that connect to SpacetimeDB (console, desktop, or any .NET app). |
| license | Apache-2.0 |
| metadata | {"author":"clockworklabs","version":"2.0","role":"client","language":"csharp","cursor_globs":"**/*.cs","cursor_always_apply":true} |
Install: dotnet add package SpacetimeDB.ClientSDK
Generated bindings convert snake_case names to PascalCase, including row fields: a server column trip_id is TripId on client rows.
using SpacetimeDB;
using SpacetimeDB.Types;
var conn = DbConnection.Builder()
.WithUri("http://localhost:3000")
.WithDatabaseName("my-database")
.WithToken(savedToken)
.OnConnect((conn, identity, token) =>
{
Console.WriteLine($"Connected as: {identity}");
// Save token for reconnection
File.WriteAllText("auth_token.txt", token);
conn.SubscriptionBuilder()
.OnApplied(OnSubscriptionApplied)
.SubscribeToAllTables();
})
.OnConnectError(err => Console.Error.WriteLine())
.OnDisconnect((conn, err) =>
{
(err != ) Console.Error.WriteLine();
})
.Build();
FrameTick() must be called in your main loop. The SDK queues all network messages and only processes them when you call FrameTick(). Without it, no callbacks fire.
while (running)
{
conn.FrameTick();
// Your application logic...
Thread.Sleep(16); // ~60fps
}
Thread safety: FrameTick() processes messages on the calling thread. Do NOT call it from a background thread. Do NOT access conn.Db from background threads.
// Subscribe to all tables
conn.SubscriptionBuilder()
.OnApplied(ctx => Console.WriteLine("Subscription ready"))
.SubscribeToAllTables();
// Subscribe with typed query builder (recommended)
conn.SubscriptionBuilder()
.OnApplied(OnSubscriptionApplied)
.AddQuery(q => q.From.Player().Where(p => p.Level.Gte(5u)))
.AddQuery(q => q.From.GameState())
.Subscribe();
// Or with raw SQL strings
conn.SubscriptionBuilder()
.OnApplied(OnSubscriptionApplied)
.Subscribe(new[] {
"SELECT * FROM player WHERE level >= 5",
"SELECT * FROM game_state"
});
conn.Db.Player.OnInsert += (EventContext ctx, Player player) =>
{
Console.WriteLine($"Player joined: {player.Name}");
};
conn.Db.Player.OnDelete += (EventContext ctx, Player player) =>
{
Console.WriteLine($"Player left: {player.Name}");
};
conn.Db.Player.OnUpdate += (EventContext ctx, Player oldPlayer, Player newPlayer) =>
{
Console.WriteLine($"Player updated: {newPlayer.Name}");
};
// Find by primary key
if (conn.Db.Player.Id.Find(playerId) is Player player)
{
Console.WriteLine($"Player: {player.Name}");
}
// Find by unique column
var me = conn.Db.Player.Identity.Find(myIdentity);
// Filter by indexed column
foreach (var p in conn.Db.Player.Level.Filter(5))
{
Console.WriteLine($"Level 5: {p.Name}");
}
// Iterate all rows
foreach (var p in conn.Db.Player.Iter())
{
Console.WriteLine(p.Name);
}
// Count
int total = conn.Db.Player.Count;
conn.Reducers.CreatePlayer("Alice");
conn.Reducers.MovePlayer(10.0f, 20.0f);
conn.Reducers.SendMessage("Hello!");
Reducer calls return void; observe failures via the reducer callbacks below (Status.Failed).
conn.Reducers.OnSendMessage += (ReducerEventContext ctx, string text) =>
{
if (ctx.Event.Status is Status.Committed)
Console.WriteLine($"Message sent: {text}");
else if (ctx.Event.Status is Status.Failed(var reason))
Console.Error.WriteLine($"Send failed: {reason}");
};
// Identities from OnConnect callback
Identity myIdentity;
// Compare identities
if (player.Owner == myIdentity) { /* it's me */ }
// Display
Console.WriteLine($"Identity: {identity}");