Passing a Dictionary to WCF service

Question

I need to pass a Dictionary (with max 20,000 entries) to a WCF service. Can I pass it all by once?

void SubmitDictionary(Dictionary<string, MyEntry> val);

where MyEntry is :

class MyEntry
{
    string Name;
    long Age;
}

Is there a configuration for size of the value passed? Or can we pass as large data as this?

Answer 1

Two things I need to know.

1. What type of binding ru using ? Like BasicHttpBinding or wsHttpBinding . If you are using wsHttpBinding you don't need to worry about it's length

2. Have you made your class serializeable? If not then make it like this:

    [DataContract]
    public Class MyEntry
    {
          [DataMember]
          public string Name {get; set;}

          [DataMember]
          public long Age {get; set;}
    }

Answer 2

You unfortunately have a bigger problem and that's that you can't serialize an IDictionary.

You're probably going to have to create an array or similar of a serializable custom key-value type.

Answer 3

There's MaxReceivedMessageSize , MaxStringContentLength and MaxBufferSize .

Check the link

http://geekswithblogs.net/niemguy/archive/2007/12/11/wcf-maxstringcontentlength-maxbuffersize-and-maxreceivedmessagesize.aspx

Read related question on how to increase size

wcf max message size

Silverlight & WCF: Max message size

EDIT Check also Service Reference's configuration. You should set Dictionary collection type to Dictionary .

Good Luck!