Serialization and Deserialization of a Byte Array

[soft_coder]

Hi I have a byte array of size 2138 and it is serialized.
Now I want to store that in cache or session.
I have the following:
1. Deserialized the Byte array into an object.
2. Stored the same in Session.
3. Whenever required I have again Serialized the Object into a Byte array and tried to reuse it.

But this method has failed.

public object ByteArrayToObject(byte[] _ByteArray)
        {
            try
            {
                // convert byte array to memory stream
                System.IO.MemoryStream _MemoryStream = new System.IO.MemoryStream(_ByteArray);

                // create new BinaryFormatter
                System.Runtime.Serialization.Formatters.Binary.BinaryFormatter _BinaryFormatter
                            = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();

                // set memory stream position to starting point
                _MemoryStream.Position = 0;

                // Deserializes a stream into an object graph and return as a object.
                return _BinaryFormatter.Deserialize(_MemoryStream);
            }
            catch (Exception ex)
            {
                // Error
                
                return null;
            }
        }

public byte[] ObjectToByteArray(object _Object)
        {
            try
            {
                // create new memory stream
                System.IO.MemoryStream _MemoryStream = new System.IO.MemoryStream();

                // create new BinaryFormatter
                System.Runtime.Serialization.Formatters.Binary.BinaryFormatter _BinaryFormatter
                            = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();

                // Serializes an object, or graph of connected objects, to the given stream.
                _BinaryFormatter.Serialize(_MemoryStream, _Object);

                // convert stream to byte array and return
                return _MemoryStream.ToArray();
            }
            catch (Exception ex)
            {
                // Error
                
                // Error occured, return null
                return null;
            }
        }

The above two methods are used for the conversion.

I am unable understand why it is not working.

Any kind of help will be appreciated.