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BeginResolve Method (IEnumerable(ContractDescription), Uri, MetadataExchangeClientMode, MetadataExchangeClient, AsyncCallback, Object)

MetadataResolver.BeginResolve Method (IEnumerable(ContractDescription), Uri, MetadataExchangeClientMode, MetadataExchangeClient, AsyncCallback, Object)

Begins an asynchronous call that resolves a metadata address into the ServiceEndpoint objects for the specified contracts, using the specified address, System.ServiceModel.Description.MetadataExchangeClient, System.ServiceModel.Description.MetadataExchangeClientMode, asynchronous state, and delegate.

Namespace:  System.ServiceModel.Description
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

static member BeginResolve : 
        contracts:IEnumerable<ContractDescription> * 
        address:Uri * 
        mode:MetadataExchangeClientMode * 
        client:MetadataExchangeClient * 
        callback:AsyncCallback * 
        asyncState:Object -> IAsyncResult


Type: System.Collections.Generic.IEnumerable(ContractDescription)

The contracts for which to download and resolve metadata.

Type: System.Uri

The metadata address.

Type: System.ServiceModel.Description.MetadataExchangeClientMode

The mode of retrieval.

Type: System.ServiceModel.Description.MetadataExchangeClient

The System.ServiceModel.Description.MetadataExchangeClient used to retrieve the metadata.

Type: System.AsyncCallback

The asynchronous callback delegate invoked when the call is complete.

Type: System.Object

The state associated with the asynchronous call.

Return Value

Type: System.IAsyncResult
The IAsyncResult that references the asynchronous resolve operation.


The address, contract, or callback is a null reference (Nothing in Visual Basic).


contracts is empty, at least one member of contracts is null, or contracts contains more than one contract with the same name and namespace.

To download metadata but not resolve the information into ServiceEndpoint objects, use the System.ServiceModel.Description.MetadataExchangeClient directly.


An empty collection is returned if no endpoints were imported or if no endpoints matched the contract. If an empty collection is returned, a warning trace is written.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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