DataSourceProvider.BeginQuery Method

When overridden in a derived class, this base class calls this method when InitialLoad or Refresh has been called. The base class delays the call if refresh is deferred or initial load is disabled.

Namespace:  System.Windows.Data
Assembly:  WindowsBase (in WindowsBase.dll)

'Declaration
Protected Overridable Sub BeginQuery

Notes to Implementers: You can choose to execute the query on the same thread or on a background thread or using IsAsynchronous. When the query is complete, call OnQueryFinished to have the public properties updated.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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