CsharpPlayground.cs

using System;

using System.Text.RegularExpressions;
using MongoDB.Driver;
using MongoDB.Bson;

namespace HelloWorld
{
    class Hello 
    {
            static void Main() 
            {
                var document = new BsonDocument
                    {
                        { "0", true  },
                        { "1", 1  },
                        { "2", 429496729601L  },
                        { "3", 0.001  },
                        { "4", 0x1243  },
                        { "5", 83  },
                        { "6", 10  },
                        { "7", "str"  },
                        { "8", new Regex("10") },
                        { "8a", new Regex("abc") },
                        { "9", new BsonArray { 1, 2 } },
                        { "10", new BsonDocument("x", 1)  },
                        { "11", BsonNull.Value  },
                        { "12", BsonUndefined.Value  },
                        { "100", new BsonJavaScriptWithScope("1", new BsonDocument("x", 1))  },
                        { "100a", new BsonJavaScript("!")  },
                        { "101", new ObjectId()  },
                        { "103", new MongoDBRef("c", new ObjectId())  },
                        { "104", 1.0  },
                        { "105", 1  },
                        { "106", 429496729601L  },
                        { "107", BsonMinKey.Value  },
                        { "108", BsonMaxKey.Value  },
                        { "109", new BsonRegularExpression("1", "i")  },
                        { "110", new BsonTimestamp(1, 100)  },
                        { "111", "1"  },
                        { "112", Decimal128.Parse("1E-6176")  },
                        { "200", DateTime.Now.ToString("ddd MMM dd yyyy HH':'mm':'ss UTC")  },
                        { "201a", DateTime.Now  }
                  };
         }
    }
}

errors.md

The above code does produce these errors tho.

Aggregation.cs(32,25): error CS1950: The best overloaded Add method 'BsonDocument.Add(Dictionary<string, object>, IEnumerable<string>)' for the collection initializer has some invalid arguments [/Users/lrlna/code/csharp-playground/csharp-playground.csproj]
Aggregation.cs(32,27): error CS1503: Argument 1: cannot convert from 'string' to 'System.Collections.Generic.Dictionary<string, object>' [/Users/lrlna/code/csharp-playground/csharp-playground.csproj]
Aggregation.cs(32,34): error CS1503: Argument 2: cannot convert from 'MongoDB.Driver.MongoDBRef' to 'System.Collections.Generic.IEnumerable<string>' [/Users/lrlna/code/csharp-playground/csharp-playground.csproj]

The build failed. Please fix the build errors and run again.