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Asked: 2026-05-26T12:35:59+00:00

I am using WCF data services to ‘query’ for data models from my web

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I am using WCF data services to ‘query’ for data models from my web application, but then I use SignalR to receive ‘push’ updates.

WCF Data Services (OData) formats dates as a string in the format “/Date(1319493384779)/”. This is fine, because I then generate client-side (javascript) viewmodels where I create actual Javascript Date() objects.
SignalR also sends DateTime objects from the server to the client as “/Date(1319493384779)/”, but it appears to expect an actual Date() object when passing from javascript to a server hub method via Javascript.
This is rather inefficient, because I already have a model object in javascript, and I should just be able to send it to a SignalR hub as-is.

Does anybody have any idea why this is happening?

EDIT:
This is a message arriving in the browser from the server, note the format of the CreationDate – on the server this is a CLR DateTime

Hub to Browser

This is sending an object back to the Hub – notice the exact same date format… this call fails
Browser to Hub

This is the error
enter image description here

If I format the date like this, it works (Javascript code):

CreationDate: "13/10/2011 3:31:10 p.m."
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1 Answer

  1. Editorial Team

    Recognised issue listed on GITHub, now open.

    https://github.com/SignalR/SignalR/issues/46

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