![]() The Visual Basic version uses the Function keyword instead of the usual Sub keyword because this method returns a value. This method determines the answers to the math problems and compares the results to the values in the NumericUpDown controls. Multiplicand * multiplier = product.Value AndAlso Minuend - subtrahend = difference.Value AndAlso Public Function CheckTheAnswer() As Boolean ''' True if the answer's correct, false otherwise. ''' Check the answers to see if the user got everything right. & (multiplicand * multiplier = product.Value) & (minuend - subtrahend = difference.Value) / True if the answer's correct, false otherwise. / Check the answers to see if the user got everything right. Your code should look like the following sample. This method should be in line with the other methods, such as StartTheQuiz(). If time has run out, or if the answers are correct, the quiz should end.īefore you write that event handler, add a method called CheckTheAnswer() to determine whether the answers to the math problems are correct. It's also practical to check the answers in that event handler. Because this interval is in milliseconds, a value of 1000 causes the timer to raise a Tick event every second.īecause the timer raises a Tick event every second, it makes sense to check the elapsed time in a Tick event handler. On the form, select the timer1 icon that you just added, and set its Interval property to 1000. The control appears in the gray area at the bottom of the design window. In Windows Forms Designer, move a Timer control from the Components category of the Toolbox to your form. Use the programming language control at the top right of this page to view either the C# code snippet or the Visual Basic code snippet. ' This integer variable keeps track of the ' These integer variables store the numbers ' Create a Random object called randomizer This integer variable keeps track of the These integer variables store the numbers Start and Stop operation for you app consist of setting the value of expires: DateTime.MinValue to stop it,ĭ(30) to wait half an hour.// Create a Random object called randomizer If it's smaller, the timer has elapsed, so set expires back to DateTime.MinValue. ![]() If it's greater, use your SetTime method (modified) to display the difference (Hint: you can subtract two DateTime values to give you a Timespan which gives you hours, minutes, and seconds) If it doesn't, check it against DateTime.Now In your Tick event, check if expires equals DateTime.MinValue. Set up a DateTime value: call it expires and set it to DateTime.MinValue. Set up a Timer with an interval of half a second. To do a countdown timer, the simplest way is: SetTime modifies the display from temp - but your tick event always sets temp to -1. Private Sub btnStopStandard_Click(sender As Object, e As EventArgs) Handles btnStopStandard.Click Private Sub btnSPCStandard_Click(sender As Object, e As EventArgs) Handles btnSPCStandard.ClickĮlseIf btnSPCStandard.Text = " Pause" ThenĮlseIf btnSPCStandard.Text = " Continue" Then Private Sub timerStandard_Tick(sender As Object, e As EventArgs) Handles timerStandard.Tick ![]() Temp = cmbStandardHour.Value * 3600 + cmbStandardMin.Value * 60 + cmbStandardSec.Value Private Sub btnSetStandard_Click(sender As Object, e As EventArgs) Handles btnSetStandard.Click LblStandardMinValue.Text = " 0" & lblStandardMinValue.TextĬmbStandardSec.Text = " 0" & cmbStandardSec.Text LblStandardHourValue.Text = " 0" & lblStandardHourValue.Text LblStandardSecValue.Text = temp Mod 3600 Mod 60 ![]() LblStandardMinValue.Text = (temp Mod 3600) / 60 Private Sub btnStandardSet_Load(sender As Object, e As EventArgs) Handles MyBase.Load ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |