Couchbase Playground

CB Lite Dotnet - Update Documents

You can update documents stored in Couchbase Lite by fetching the document from the database, converting it explicitly into a mutable document, editing the properties of the document and then saving it back in the database.

See more at the CB Lite C#.Net SDK documentation.

To run this example, click the button in the top right corner of the code editor.

Code Editor

using System;
using Couchbase.Lite;
using Couchbase.Lite.Query;
using Couchbase.Lite.Sync;
using Couchbase.Lite.Logging;

namespace CouchbaseDotNetExample
{
  class Program
  {
    static void Main(string[] args)
    {
      // Disable Logging
      Database.Log.Console.Domains = LogDomain.All;
      Database.Log.Console.Level = LogLevel.Error;

      // Get the database (and create it if it doesn't exist)
      var database = new Database("mydb");
      
      // Create a new document (i.e. a record) in the database
      string id = null;
      using (var mutableDoc = new MutableDocument())
      {
          mutableDoc.SetFloat("version", 2.0f)
              .SetString("type", "SDK")
              .SetString("language", "C#");

          // Save it to the database
          database.Save(mutableDoc);
          id = mutableDoc.Id;
      }

      // Retrieve and update document
      Console.WriteLine($"Document Before Update:");
      using (var doc = database.GetDocument(id))
      using (var mutableDoc = doc.ToMutable())
      {
        Console.WriteLine($"Version = {doc.GetFloat("version")}"); 
        mutableDoc.SetFloat("version", 3.0f);
        database.Save(mutableDoc);
      }

      // Retrieve updated document
      Console.WriteLine($"Document After Update:");
      using (var docAgain = database.GetDocument(id))
      {
        Console.WriteLine($"Version = {docAgain.GetFloat("version")}");
      }

      // Close the database 
      database.Close();
    }
  }
}

CB Lite Dotnet - Update Documents

Code Editor

Output