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Error while adding pollingduplex binding

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net

I am making samle of polling duplex in .net 4.0

when ever i put binding this tag in web.config it shows error.


Warning    1    The element 'bindings' has invalid child element 'pollingDuplexHttpBinding'. List of possible elements expected: 'basicHttpBinding, customBinding, msmqIntegrationBinding, netPeerTcpBinding, netMsmqBinding, netNamedPipeBinding, netTcpBinding, wsFederationHttpBinding, ws2007FederationHttpBinding, wsHttpBinding, ws2007HttpBinding, wsDualHttpBinding, netTcpContextBinding, wsHttpContextBinding, basicHttpContextBinding, mexHttpBinding, mexHttpsBinding, mexNamedPipeBinding, mexTcpBinding, webHttpBinding'.    D:\DuplexTest\TestPollingDuplexWcf\TestPollingDuplexWcf\TestPollingDuplexWcf\Web.config    9    8    TestPollingDuplexWcf

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