Why is dictionary not serializable

Edit Profile. Sign Out View Profile. Over 2 million developers have joined DZone. While serialization in. NET is pretty simple, in general, serialization of a dictionary object is not. Read on to learn how to tackle this tough problem. Like 3. Join the DZone community and get the full member experience. Join For Free.

Read ; while reader. GetAttribute "Value" ; this. Add TKey key, TValue value ; reader. WriteStartElement "Language" ; writer. WriteAttributeString "Title", key. This is far from ideal. Skip to content.

Star Branches Tags. Could not load branches. Could not load tags. Latest commit. Git stats commits. Failed to load latest commit information. View code. SerializableDictionary A serializable dictionary class for Unity. A CustomPropertyDrawer has to be declared for each of these classes.

Multiple editing of scripts using SerializableDictionaries in the inspector is not supported. So I think you need to create your own version of the Dictionary for this. Check this other question. Instead of using XmlSerializer you can use a System. This can serialize dictionaries and interfaces no sweat.

Expose a public property of array type, that holds an array of SerializableKeyValue instances, which are used to serialize and deserialize into the SearchCategories property:. You should explore Json. Net, quite easy to use and allows Json objects to be deserialized in Dictionary directly. Dictionaries and Hashtables are not serializable with XmlSerializer. Therefore you cannot use them directly.

A workaround would be to use the XmlIgnore attribute to hide those properties from the serializer and expose them via a list of serializable key-value pairs. PS: constructing an XmlSerializer is very expensive, so always cache it if there is a chance of being able to re-use it. I don't think that is the problem.

You can use ExtendedXmlSerializer. If you have a class:. You can install ExtendedXmlSerializer from nuget or run the following command:. This article explains exactly how to handle this: How do I Serialize a hash table in C when the application requires it?

This will able to serialize IDictionary and Dictionary members. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Serialize Class containing Dictionary member Ask Question. Asked 12 years, 9 months ago.

Active 1 month ago. Viewed k times. Save : There was an error reflecting type 'App. Open filename, FileMode. Show e. Open, FileAccess. Show ex. Improve this question. Community Bot 1 1 1 silver badge. Add a comment.

Active Oldest Votes. Generic; using System. Text; using System. IsEmptyElement; reader. Read ; if wasEmpty return; while reader. ReadStartElement "item" ; reader. Deserialize reader ; reader. ReadEndElement ; reader. ReadEndElement ; this. Add key, value ; reader.

WriteStartElement "item" ; writer. WriteStartElement "key" ; keySerializer. Serialize writer, key ; writer. WriteEndElement ; writer. Serialize writer, value ; writer.