.net Serializer Deserialization failing when string is greater than 32768 characters long

Question

I have a method like this:

var stringReader = new StringReader(ruleSetXmlDefinition);
var reader = XmlReader.Create(stringReader);
var serializer = new WorkflowMarkupSerializer();
return serializer.Deserialize(reader) as RuleSet;

When the ruleSetXmlDefinition is greater than 32768 characters long I get the following error:

Unexpected end of file while parsing Name has occurred. Line 1, position 32768.

How can I change this so that it can handle strings of any length?

score 3 · Answer 1 · edited May 23 '17 at 12:03

I suspect you can configure Wcf to accept bigger arrays, see also this answer:

Maximum array length quota

Something like

<netTcpBinding>
        <binding name="NetTcpBinding_ImageResizerServiceContract" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions"
hostNameComparisonMode="StrongWildcard" listenBacklog="10"
maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxConnections="10"
maxReceivedMessageSize="2147483647">
                <readerQuotas maxDepth="2147483647"
                                          maxStringContentLength="2147483647"
                                          maxArrayLength="2147483647"
                                          maxBytesPerRead="2147483647"
                                          maxNameTableCharCount="2147483647" />
                <reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false" />
                <security mode="Transport">
                        <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
                        <message clientCredentialType="Windows" />
                </security>
        </binding>

</netTcpBinding>

This method is not being exposed over WCF, it is just a simple local method — David Ward, Nov 18 '11 at 14:19
@DavidWard: I noticed you didn't say so, yet WorkflowMarkupSerializer is part of WCF so the configuration might apply. You can search MSDN for a way to globally override the defaults — sehe, Nov 18 '11 at 14:21
Thanks for this but I am unable to find any further information about setting WCF config globally. Also, this code works fine when below the character limit and I don't have any WCF config anywhere in the application so don't see how this could help — David Ward, Nov 18 '11 at 14:33
@DavidWard: huh, that would be because of default values? Well, sorry I can't help you any further a.t.m. — sehe, Nov 18 '11 at 14:42

score 1 · Answer 2 · answered Nov 18 '11 at 14:55

1

I have found the answer to this issue and unfortunately it was something really obvious...the string I was passing in was actually being truncated so the issue was actually that the xml was not well formed.

answered Nov 18 '11 at 14:55

David Ward

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.net Serializer Deserialization failing when string is greater than 32768 characters long

2 Answers2