public bool UndoDelete()
{
bool result = false;
if (UndoDeleteCount == 0)
{
throw new InvalidOperationException("There are no items to be undeleted");
}
// Get the item to be undeleted
MatrixTask matrixTask = _UndoDeleteStack.Pop();
// Set the MatrixTaskId to 0 (like a new item)
matrixTask.MatrixTaskId = 0;
_Context.MatrixTasks.Add(matrixTask);
try
{
this.SaveChanges();
result = true;
}
catch (Exception)
{
throw;
}
return(result);
}
/// <summary>
/// Deletes a MatrixTask
/// </summary>
/// <returns>True if deleted, false if not</returns>
public bool DeleteMatrixTask(int matrixTaskId)
{
bool result = false;
MatrixTask matrixTask = this.GetMatrixTaskById(matrixTaskId);
if (matrixTask != null)
{
// Push the item onto the Undo Stack
_UndoDeleteStack.Push(matrixTask);
_Context.MatrixTasks.Remove(matrixTask);
result = true;
_Context.SaveChanges();
}
return(result);
}
