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Collections

Manage Milvus collections -- create, list, describe, and drop.

This example assumes using Milvus; is in scope and apiKey contains your Milvus API key.

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var client = Client;
var collectionName = $"test_collection_{Guid.NewGuid():N}";

// Create a new collection with 4-dimensional vectors using Cosine distance.

var createResponse = await client.CollectionOperationsV2.CreateVectordbCollectionsCreateAsync(
    requestTimeout: 30,
    collectionName: collectionName,
    dimension: 4,
    metricType: "COSINE");

Console.WriteLine($"Collection '{collectionName}' created successfully.");

// Check that the collection exists using the Has endpoint.

var hasResponse = await client.CollectionOperationsV2.CreateVectordbCollectionsHasAsync(
    dbName: "default",
    collectionName: collectionName);

Console.WriteLine($"Collection '{collectionName}' exists: {hasResponse.Data.Has}");

// Describe the collection to get detailed information.

var describeResponse = await client.CollectionOperationsV2.CreateVectordbCollectionsDescribeAsync(
    dbName: "default",
    collectionName: collectionName);

Console.WriteLine($"Collection name: {describeResponse.Data.CollectionName}");
Console.WriteLine($"Fields count: {describeResponse.Data.Fields.Count}");
Console.WriteLine($"Load status: {describeResponse.Data.Load}");

// Drop the collection.

var dropResponse = await client.CollectionOperationsV2.CreateVectordbCollectionsDropAsync(
    collectionName1: collectionName);

Console.WriteLine($"Collection '{collectionName}' dropped.");

// Verify the collection no longer exists.

var hasAfterDrop = await client.CollectionOperationsV2.CreateVectordbCollectionsHasAsync(
    dbName: "default",
    collectionName: collectionName);