Hi,

 I am calling a server side method from javascript that returns a string. The string can be quite large. Occasionally I get an InvalidOperationException with a message of "Maximum length exceeded." Does anyone know what the maximum length is or how to get around it if possible.

Thanks,

Jason
 

Ignore this, I'm dumb. I didn't notice the maxJsonLength property and also didn't know it defaulted to around 1000 characters.

Jason

I am having a similar problem (or maybe the same problem), but I changed the maxJsonLength in my web.config (copy below), and this did not help (details of my problem below). Ideas?

<jsonSerialization maxJsonLength="50000">

I made the following change in my web.config and everything seems ok now. It worked with only increasing from 500 to 500,000 but since my code is just a prototype, I added one more zero for now.  Increasing to 50,000 was not enough for my specific need.

<!-- Uncomment this line to customize maxJsonLength and add a custom converter -->

<!--increased from default of 500 to 5,000,000-->

<jsonSerialization maxJsonLength="5000000">

<converters>

<!--<add name="ConvertMe" type="Acme.SubAcme.ConvertMeTypeConverter"/>-->

</converters>

</jsonSerialization>

Thanks...that is what I ended up trying and it worked for me too.

 Here is the perfect solution for this problem,

http://www.shabdar.org/system-invalidoperationexception-maximum-length-exceeded.html