JSON "Maxium length exceeded" RSS

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  JCannelos

  Member

  8 Points

  7 Posts

  JSON "Maxium length exceeded"

  Mar 24, 2007 12:12 AM|LINK

  Guys,

   I have what I hope is a simple problem. I am calling a simple web service in my project called FilterService. It has one method:

  [WebMethod]

  [System.Web.Script.Services.ScriptMethod(UseHttpGet=true)]

  public string GetIndustries()

  {

  SetCacheHeaders();

  JavaScriptSerializer serializer = new JavaScriptSerializer();

  serializer.MaxJsonLength = 500000000;

  return serializer.Serialize(CachedLists.IndustryList);

  }

  As you can see, I have set the MaxJsonLength to a huge number, but I am STILL getting a "Maximum Length exceeded" error. This happens in both GET and POST scenarios. Also, my setting in the web.config file:

  <jsonSerialization maxJsonLength="999"/>

   is completely ignored! :( Finally, I know for a fact that my list (IndustryList) is not THAT large. Does anyone know what is happening here?

  Thanx!

  J'son

  atlas javascript webservices complextypes ajax webservice JSON web service ajax ajax v1.0 web service ajax

  Sincerely,
  
  J'son
• • Reply
  

  alesha911

  Member

  161 Points

  42 Posts

  Re: JSON "Maxium length exceeded"

  Mar 24, 2007 12:59 AM|LINK

  Set the web.config setting to a much higher value, you currently have it set at less than 1KB.
  Aleksey Fomichenko
  Senior Consultant
  • Marked as answer by JCannelos on Mar 26, 2007 04:16 PM
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  JCannelos

  Member

  8 Points

  7 Posts

  Re: JSON "Maxium length exceeded"

  Mar 26, 2007 04:13 PM|LINK

  Aleksey,

  Thanx for your reply... that works! It seems that the web.config setting overrides whatever setting you manually try to set maxlength to later. Doh!

  Thanx again,

  J'son

  Sincerely,
  
  J'son
• • Reply
  

  maira.wenzel

  Member

  511 Points

  111 Posts

  Microsoft

  Re: JSON "Maxium length exceeded"

  Mar 29, 2007 09:01 PM|LINK

  I know you already got it working, but just to explain how it works...

  If you're using the JavaScriptSerializer class programmatically, you can set the MaxJsonLength property. But the only way to set the maximum length for invoking web methods from client script is through the web.config file.

  See:
  http://ajax.asp.net/docs/mref/P_System_Web_Script_Serialization_JavaScriptSerializer_MaxJsonLength.aspx
  http://ajax.asp.net/docs/mref/P_System_Web_Configuration_ScriptingJsonSerializationSection_MaxJsonLength.aspx

  Regards,

  Maíra

  This posting is provided "AS IS" with no warranties, and confers no rights.
• • Reply
  

  jerkham

  Member

  3 Points

  1 Post

  Re: JSON "Maxium length exceeded"

  Apr 09, 2008 03:27 PM|LINK

  And that section in the web. config looks like this...

   

  <system.web.extensions>
      <scripting>
        <webServices>
          <!-- Uncomment this line to customize maxJsonLength and add a
           custom converter -->
          <jsonSerialization maxJsonLength="500000">
            <!--<converters>
              <add name="ConvertMe"
                 type="Acme.SubAcme.ConvertMeTypeConverter"/>
            </converters>-->
          </jsonSerialization>
        
          <!-- Uncomment this line to enable the authentication service.
             Include requireSSL="true" if appropriate. -->
          <!--
        <authenticationService enabled="true" requireSSL = "true|false"/>
        -->
  
          <!-- Uncomment these lines to enable the profile service. To
             allow profile properties to be retrieved
             and modified in ASP.NET AJAX applications, you need to add
             each property name to the readAccessProperties and
             writeAccessProperties attributes. -->
          <!--
        <profileService enabled="true"
          readAccessProperties="propertyname1,propertyname2"
          writeAccessProperties="propertyname1,propertyname2" />
        -->
        </webServices>
        <!--
      <scriptResourceHandler enableCompression="true"
          enableCaching="true" />
      -->
      </scripting>
    </system.web.extensions>