/// <summary>
/// 清空全部任务
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnClearTask_Click(object sender, RoutedEventArgs e)
{
if (System.Windows.Forms.MessageBox.Show(resourceManager.GetString("Delete_Task_Tips", cultureInfo), resourceManager.GetString("Delete_Task_Confirmation", cultureInfo), System.Windows.Forms.MessageBoxButtons.YesNo) == System.Windows.Forms.DialogResult.Yes)
{
TasksBLL.DeleteTasks(-1);
getTasksList();
}
}