private void UpdateConnectionState()
{
// Never update the ConnectionState when disconnected
// from the CollectionView or Disposed since another
// VirtualPageManager will take care or updating it
if( !this.IsConnected || this.IsDisposed )
return;
DataGridConnectionState state = DataGridConnectionState.Idle;
object error = null;
if( m_asyncCommitInfosInError != null )
{
state = DataGridConnectionState.Error;
Debug.Assert( m_asyncCommitInfosInError.Count > 0 );
error = m_asyncCommitInfosInError.First.Value.Error;
}
else if( m_asyncQueryInfosInError != null )
{
state = DataGridConnectionState.Error;
Debug.Assert( m_asyncQueryInfosInError.Count > 0 );
error = m_asyncQueryInfosInError.First.Value.Error;
}
else if( m_asyncCommitInfosInProgress.Count > 0 )
{
state = DataGridConnectionState.Committing;
}
else if( m_asyncQueryInfosInProgress.Count > 0 )
{
state = DataGridConnectionState.Loading;
}
m_collectionView.UpdateConnectionState( state, error );
}
private void SetConnectionState( DataGridConnectionState value )
{
if( value == DataGridConnectionState.Idle )
{
this.ClearValue( DataGridControl.ConnectionStatePropertyKey );
}
else
{
this.SetValue( DataGridControl.ConnectionStatePropertyKey, value );
}
}
internal void UpdateConnectionState( DataGridConnectionState connectionState, object error )
{
this.ConnectionState = connectionState;
this.ConnectionError = error;
}
internal void UpdateConnectionState(DataGridConnectionState connectionState, object error)
{
this.ConnectionState = connectionState;
this.ConnectionError = error;
}