Newtonsoft Json Serialize Timespan
JSON is a very simple syntax which only knows about numbers, boolean and strings (in addition to arrays and objects). Many CLR types don't have a native JSON type (Uri, DateTime, DateTimeOffset, TimeSpan, and so on), so when any JSON parser is reading the data, it will try to use the best match. The following line performs the actual serialization of the data inside the employee class instance into a json string. String json = JsonConvert.SerializeObject(employee, Formatting.Indented); The parameter Formatting.Indented tells Json.Net to serialize the data with indentation and new lines. If you don't do that, the serialized string will.
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Comments
commented Mar 27, 2018 • edited
edited
Using the extension method Server code (asp.net core): Client code (blazor page): The JSON sent: And the exception received: Note that the page works fine with just datetimes (and for this case a workaround would be to send the start and end date instead of the length). However one would expect that since the server handles timespans perfectly fine and since the client handles datetimes perfectly fine that the client would also handle timespans. I realize that ultimately this is likely a SimpleJson issue, but since this extension method is likely to be pretty heavily used it's important IMO for it to work for the commonly used core .NET types. Ulead studio download. EDIT: After digging a bit it looks like the SimpleJson also didn't support DateTime or DateTimeOffset and this support was added to this repo's fork of it. |
added this to Triage in Blazor via automationMar 27, 2018
added the up-for-grabs label Mar 27, 2018
commented Mar 27, 2018
If it's up for grabs I can give it a shot! Just wanted to confirm that it's indeed in the right direction |
commented Mar 27, 2018
Sounds good, and thanks for offering to contribute! |
Blazorautomation moved this from Triage to DoneMar 29, 2018
commented Mar 29, 2018
Ooo thanks @bdparrish. Didn't get a chance to dive into this yet |
commented Aug 16, 2018
I solved this problem using this extension:
|
Is it possible to specify custom format for TimeSpan serialization?Using Newtonsoft.Json.
I would like to have serialized string in format HH:mm, so for example:
TimeSpan.FromHours(5) -> // '+05:00'
TimeSpan.FromHours(-5) -> // '-05:00'
Thanks!
MikhailMikhail3 Answers
As you can see in the source code, there is no way of changing the format using predefined setting (like for DateTime).
What you can do is write a new JsonConverter for TimeSpan and handle the formatting as you see fit. Just be sure to use it by including it in JsonSerializerSettings.Converters or by modifying the default settings.
Newtonsoft Json Serialize Timespan Format
Here's a TimeSpan converter you can add to your project:
It can be used like this:
I found that when generating a schema using Newtonsoft I had to include the TypeNameHandling attribute or the TimeSpan type name was not being serialized properly in the generated schema. That isn't necessary for the purpose here, but I included it anyway.
You can get a DateTime instance, and then add and subtract time from it like:
To specify the times that you need. Then to put them into your string format:
To deserialize the string value back into DateTime objects with a certain format, there's an example of specifying a DateTimeFormat and IsoDateTimeConverter in this post:Deserializing dates with dd/mm/yyyy format using Json.Net