private void CreateTask_Click(object sender, RoutedEventArgs e)
{
string taskName = TaskNameBox.Text;
int prior = TaskPriorBar.Value - 1;
if (taskName.Length == 0)
{
MessageBox.Show("请输入任务名称！");
return;
}
if (TaskDueDateBox.SelectedDate == null)
{
MessageBox.Show("请选择截止日期！");
return;
}
DateTime duedate = TaskDueDateBox.SelectedDate.Value;
MyTask.AddTask(new MyTask {
Title = taskName, Priority = prior, Due = duedate
});
NewTaskExpander.IsExpanded = false;
TaskNameBox.Text = "";
TaskPriorBar.Value = 3;
TaskDueDateBox.SelectedDate = null;
drawTaskCards();
}