/// <summary>
/// Async method to cancel the operations
/// </summary>
public static async Task <TaskResult> CancelTaskAsync(SqlTask sqlTask)
{
ITaskOperation taskOperation = sqlTask.TaskMetadata.TaskOperation as ITaskOperation;
TaskResult taskResult = null;
if (taskOperation != null)
{
return(await Task.Factory.StartNew(() =>
{
try
{
taskOperation.Cancel();
return new TaskResult
{
TaskStatus = SqlTaskStatus.Canceled
};
}
catch (Exception ex)
{
return new TaskResult
{
TaskStatus = SqlTaskStatus.Failed,
ErrorMessage = ex.Message
};
}
}));
}
else
{
taskResult = new TaskResult();
taskResult.TaskStatus = SqlTaskStatus.Failed;
}
return(taskResult);
}
/// <summary>
/// Starts the task and monitor the task progress
/// </summary>
public async Task RunAsync()
{
TaskStatus = SqlTaskStatus.InProgress;
await RunAndCancel().ContinueWith(task =>
{
if (task.IsCompleted && !task.IsCanceled && !task.IsFaulted)
{
TaskResult taskResult = task.Result;
TaskStatus = taskResult.TaskStatus;
}
else if (task.IsCanceled)
{
TaskStatus = SqlTaskStatus.Canceled;
}
else if (task.IsFaulted)
{
TaskStatus = SqlTaskStatus.Failed;
if (task.Exception != null)
{
AddMessage(task.Exception.Message);
}
}
});
}
