BsonDataReader does not handle deserializing arrays, but BsonDataWriter does, so does Newtonsoft.json serializer.

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The BsonDataReader throws the following exception when deserializing byte[] that contains an array of integers:

Newtonsoft.Json.JsonSerializationException
HResult=0x80131500
Message=Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Int32[]' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly.
To fix this error either change the JSON to a JSON array (e.g. [1,2,3]) or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, not a collection type like an array or List) that can be deserialized from a JSON object. JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object.
Path '0'.
Source=Newtonsoft.Json
StackTrace:
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
at PrlSystems.Serialization.ObjectSerializerUsingBsonFormatter.DeserializeObjectFromBytes(Byte[] bytes, SerializationSettings settings) in C:\PRL\DEV\Libs\CurrentLibraries\PrlSystemsLibrary\Serialization\ObjectSerializerUsingBsonFormatter.cs:line 54
at PrlSystems.Serialization.Base64SerializerUsingBsonFormatter.DeserializeObject(String str, SerializationSettings settings) in C:\PRL\DEV\Libs\CurrentLibraries\PrlSystemsLibrary\Serialization\Base64SerializerUsingBsonFormatter.cs:line 20
at PrlSystems.Serialization.SerializerUtil.DeserializeObjectFrom64Str(String str, IBase64Serializer serializer, SerializationSettings settings) in C:\PRL\DEV\Libs\CurrentLibraries\PrlSystemsLibrary\Serialization\SerializerUtil.cs:line 23
at Pimarcnet.WebAppCode.Shared.Web.QueryStringHelper.GetObjectFromQueryString(String objKey, Type type) in C:\PRL\DEV\Libs\CurrentLibraries\Pimarcnet.WebAppCode\Shared\Web\QueryStringHelper.cs:line 78
at Pimarcnet.WebAppCode.Shared.Web.QueryStringHelper.GetObjectFromQueryString[T](String objKey) in C:\PRL\DEV\Libs\CurrentLibraries\Pimarcnet.WebAppCode\Shared\Web\QueryStringHelper.cs:line 46
at Pimarcnet.Pages.Printout.PrintProjectData._GetCriteria() in C:\PRL\DEV\Pimarcnet\Pimarcnet\Pages\Printout\PrintProjectData.aspx.cs:line 29
at Pimarcnet.Pages.Printout.PrintProjectData._Init() in C:\PRL\DEV\Pimarcnet\Pimarcnet\Pages\Printout\PrintProjectData.aspx.cs:line 20
at Pimarcnet.Pages.Printout.PrintProjectData.Page_Load(Object sender, EventArgs e) in C:\PRL\DEV\Pimarcnet\Pimarcnet\Pages\Printout\PrintProjectData.aspx.cs:line 15

Here's the code (I included both serialization/deserialization code... Serialization code works, deserialization throws):

`var typeBeingSerialized = typeof(int[]);

JsonSerializer serializer = new JsonSerializer();

byte[] bytes;
int[] arr1 = { 1 };

using (var ms = new MemoryStream())
{
using (var writer = new BsonDataWriter(ms))
{
serializer.Serialize(writer, arr1, typeBeingSerialized);
bytes = ms.ToArray();
}
}

object result;

using (var ms = new MemoryStream(bytes))
{
using (var reader = new BsonDataReader(ms))
{
result = serializer.Deserialize(reader, typeBeingSerialized); // throws here!
}
}`

NOTE:

The Newtonsoft.json library handles of serializing/deserializing arrays. I have code for that if you need to see it.