private void ExecuteOperation(Action <CslaOperation <T> > operationExecutor)
{
try
{
if (_lastOperation != null)
{
_lastOperation.Cancel();
}
if (!IsConcurentRefreshesAllowed && _lastOperation != null)
{
_nextOperationExecutor = operationExecutor;
return;
}
Error = null;
IsBusy = true;
_lastOperation = new CslaOperation <T>(QueryCompleted);
operationExecutor(_lastOperation);
}
catch (Exception ex)
{
Error = ex;
IsBusy = false;
}
}
private void QueryCompleted(DataPortalResult <T> result, bool isCanceled)
{
_lastOperation = null;
if (!IsConcurentRefreshesAllowed && _nextOperationExecutor != null)
{
var executor = _nextOperationExecutor;
_nextOperationExecutor = null;
ExecuteOperation(executor);
return;
}
if (isCanceled)
{
return;
}
try
{
if (result.Error == null)
{
OnRefreshing(result.Object);
Model = result.Object;
}
else
{
Error = result.Error;
}
OnRefreshed();
}
finally
{
IsBusy = false;
}
}