private async void buttonGetStudentsAsyncAwaitDelay_Click(object sender, EventArgs e)
{
ClearLogAndDataGridView();
List <Student> students = new List <Student>();
IStudentDataAccess dataAccess = new StudentSQLDataAccess();
UpdateLog("Starting: GetStudents Async/Await Delay");
students = await dataAccess.GetStudentsAsync();
UpdateLog("Delaying: Delaying for 5 seconds...");
await Task.Delay(1000);
UpdateLog("Delaying: Delaying for 4 seconds...");
await Task.Delay(1000);
UpdateLog("Delaying: Delaying for 3 seconds...");
await Task.Delay(1000);
UpdateLog("Delaying: Delaying for 2 seconds...");
await Task.Delay(1000);
UpdateLog("Delaying: Delaying for 1 second...");
await Task.Delay(1000);
UpdateLog("Finished: GetStudents Async/Await Delay");
UpdateLog("Starting: Binding to DataGridView");
dataGridViewStudents.DataSource = students;
UpdateLog("Finished: Binding to DataGridView");
}
private async void buttonGetStudents_Click(object sender, EventArgs e)
{
ClearLogAndDataGridView();
List <Student> students = new List <Student>();
IStudentDataAccess dataAccess = new StudentSQLDataAccess();
UpdateLog("Starting: GetStudents Async/Await");
students = await dataAccess.GetStudentsAsync();
UpdateLog("Finished: GetStudents Async/Await");
UpdateLog("Starting: Binding to DataGridView");
dataGridViewStudents.DataSource = students;
UpdateLog("Finished: Binding to DataGridView");
}
private void buttonBreakApp_Click(object sender, EventArgs e)
{
ClearLogAndDataGridView();
List <Student> students = new List <Student>();
IStudentDataAccess dataAccess = new StudentSQLDataAccess();
UpdateLog("Starting: GetStudents Result");
UpdateLog("Broken: It broke... Oh oh....");
students = dataAccess.GetStudentsAsync().Result;
UpdateLog("Finished: How though?!");
UpdateLog("Starting: Binding to DataGridView");
dataGridViewStudents.DataSource = students;
UpdateLog("Finished: Binding to DataGridView");
}
private void BtnGetStudentsAsyncAwait2_Click(object sender, EventArgs e)
{
ClearLogAndDataGridView();
List <Student> students = new List <Student>();
IStudentDataAccess dataAccess = new StudentSQLDataAccess();
UpdateLog("Starting: GetStudents Async/Await 2");
Task.Factory.StartNew(async() =>
{
students = await dataAccess.GetStudentsAsync();
WriteTextSafe("Finished: GetStudents Async/Await 2");
WriteTextSafe("Starting: Binding to DataGridView");
UpdateDataGridViewSafe(students);
WriteTextSafe("Finished: Binding to DataGridView");
});
}
private void ButtonGetStudentsNonResponsive_Click(object sender, EventArgs e)
{
ClearLogAndDataGridView();
List <Student> students = new List <Student>();
IStudentDataAccess dataAccess = new StudentSQLDataAccess();
UpdateLog("Starting: GetStudents Non Responsive");
UpdateLog("Delaying: Delaying for 5 seconds...");
var task = Task.Factory.StartNew(async() => students = await dataAccess.GetStudentsAsync());
task.Wait();
Task.Delay(5000).Wait();
UpdateLog("Finished: GetStudents Non Responsive");
UpdateLog("Starting: Binding to DataGridView");
dataGridViewStudents.DataSource = students;
UpdateLog("Finished: Binding to DataGridView");
}
