How to return dynamic List from WCF HTTP Service

Question

  public List<dynamic> GetDynamicResult()
        {
            List<dynamic> lstDynamic = new List<dynamic>();
            lstDynamic.Add(new { ID = "1", Name = "ABC" });
            lstDynamic.Add(new { ID = "1", Name = "XYZ" });
            return lstDynamic;
        }

When i return List from WCF to ASP.NET web App using List<dynamic> lstDynamic = objClient.GetDynamicResult(); I get this error: The underlying connection was closed: The connection was closed unexpectedly

Scott Forsyth · Accepted Answer · 2012-09-29 02:11:50Z

2

WCF needs to define a DataContract (serialization is used) which is sent by wire. Using dynamic types conflict with this. You can use string combine with (de)serialization instead.

edited Sep 29, 2012 at 2:11

Scott Forsyth

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answered May 12, 2011 at 7:33

Denis Besic

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2 Comments

Ulhas Tuscano Over a year ago

thank for ur reply it would be nice if u can gimme a simple example

Denis Besic Over a year ago

For start change function to public string GetDynamicResult() { etc }. After that you can pack everything to XML and than to string. At client side you can unpack from string to XML and than to .NET object. Very good link related for this topic

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