ajax call - outofmemory exception on returning big json string in asmx webmethod

Question

Exception of type 'System.OutOfMemoryException' was thrown:

at System.Text.StringBuilder.ToString() at System.Web.Util.HttpEncoder.JavaScriptStringEncode(String value) at System.Web.HttpUtility.JavaScriptStringEncode(String value, Boolean addDoubleQuotes) at System.Web.Script.Serialization.JavaScriptSerializer.SerializeString(String input, StringBuilder sb) at System.Web.Script.Serialization.JavaScriptSerializer.SerializeValueInternal(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat, MemberInfo currentMember)
at System.Web.Script.Serialization.JavaScriptSerializer.SerializeValue(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat, MemberInfo currentMember)
at System.Web.Script.Serialization.JavaScriptSerializer.Serialize(Object obj, StringBuilder output, SerializationFormat serializationFormat)
at System.Web.Script.Serialization.JavaScriptSerializer.Serialize(Object obj, SerializationFormat serializationFormat) at System.Web.Script.Services.RestHandler.InvokeMethod(HttpContext context, WebServiceMethodData methodData, IDictionary`2 rawParams)
at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)

json string that returned is big(more than 5MB), what are the solution for this problem?

Possible duplicate of [this](http://stackoverflow.com/questions/8630736/getting-an-outofmemoryexception-while-serialising-to-json) SO question. — Jeroen Heier, Feb 05 '17 at 06:59
@CodingYoshi : I don't have maxMessageLength property in httpRuntime. instead maxQueryStringLength property exist but not helping. — Natans, Feb 06 '17 at 18:31
@JeroenHeier : I already handle the problem of circuit reference. so it not the problem. — Natans, Feb 06 '17 at 18:31

score 0 · Answer 1 · answered Feb 06 '17 at 18:54

0

By default, it is possible to send or receive 4MB of data(Maximum). If you want to send more than that, you have to change the maxMessageLength in your web.config file like below.

 <configuration>

  <system.web>

     <httpRuntime maxMessageLength="409600"

       executionTimeoutInSeconds="300"/>

 </system.web>

</configuration>

With above setting, you can send 400MB of data with maximum time of 300 seconds. After that time, your execution will get stopped as TimeOut.

answered Feb 06 '17 at 18:54

CodingYoshi

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@CodinngYoshi: Server Error in '/' Application. Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: Unrecognized attribute 'maxMessageLength'. Note that attribute names are case-sensitive. Source File: D:\wgd\web.config Line: 40 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.1586.0 – Natans Feb 12 '17 at 10:29

ajax call - outofmemory exception on returning big json string in asmx webmethod

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