我正在 wpf (VB.NET-Visual Studio 2012) 中构建一个幻灯片拼图，我已经为它编写了代码，但我需要一个秒表，它会在第一次加载窗口时出现。我还需要秒表经过并在用户随机播放拼图时重新开始。请给我一些编写正确代码的提示。谢谢。这是幻灯片拼图的代码：
Public Class level2 Dim win(15) As BitmapImage Dim wrong(15) As BitmapImage Dim mess(15) As BitmapImage Dim images(15) As Image Private Sub MainWindow_Loaded(sender As Object, e As RoutedEventArgs) Handles Me.Loaded
Dim h1 As New BitmapImage
h1.BeginInit()
h1.UriSource = New Uri("images2/h1.gif", UriKind.RelativeOrAbsolute)
h1.EndInit()
Dim h2 As New BitmapImage
h2.BeginInit()
h2.UriSource = New Uri("images2/h2.gif", UriKind.RelativeOrAbsolute)
h2.EndInit()
Dim h3 As New BitmapImage
h3.BeginInit()
h3.UriSource = New Uri("images2/h3.gif", UriKind.RelativeOrAbsolute)
h3.EndInit()
Dim h4 As New BitmapImage
h4.BeginInit()
h4.UriSource = New Uri("images2/h4.gif", UriKind.RelativeOrAbsolute)
h4.EndInit()
Dim h5 As New BitmapImage
h5.BeginInit()
h5.UriSource = New Uri("images2/h5.gif", UriKind.RelativeOrAbsolute)
h5.EndInit()
Dim h6 As New BitmapImage
h6.BeginInit()
h6.UriSource = New Uri("images2/h6.gif", UriKind.RelativeOrAbsolute)
h6.EndInit()
Dim h7 As New BitmapImage
h7.BeginInit()
h7.UriSource = New Uri("images2/h7.gif", UriKind.RelativeOrAbsolute)
h7.EndInit()
Dim h8 As New BitmapImage
h8.BeginInit()
h8.UriSource = New Uri("images2/h8.gif", UriKind.RelativeOrAbsolute)
h8.EndInit()
Dim h9 As New BitmapImage
h9.BeginInit()
h9.UriSource = New Uri("images2/h9.gif", UriKind.RelativeOrAbsolute)
h9.EndInit()
Dim h10 As New BitmapImage
h10.BeginInit()
h10.UriSource = New Uri("images2/h10.gif", UriKind.RelativeOrAbsolute)
h10.EndInit()
Dim h11 As New BitmapImage
h11.BeginInit()
h11.UriSource = New Uri("images2/h11.gif", UriKind.RelativeOrAbsolute)
h11.EndInit()
Dim h12 As New BitmapImage
h12.BeginInit()
h12.UriSource = New Uri("images2/h12.gif", UriKind.RelativeOrAbsolute)
h12.EndInit()
Dim h13 As New BitmapImage
h13.BeginInit()
h13.UriSource = New Uri("images2/h13.gif", UriKind.RelativeOrAbsolute)
h13.EndInit()
Dim h14 As New BitmapImage
h14.BeginInit()
h14.UriSource = New Uri("images2/h14.gif", UriKind.RelativeOrAbsolute)
h14.EndInit()
Dim h15 As New BitmapImage
h15.BeginInit()
h15.UriSource = New Uri("images2/h15.gif", UriKind.RelativeOrAbsolute)
h15.EndInit()
win(0) = h1
win(1) = h2
win(2) = h3
win(3) = h4
win(4) = h5
win(5) = h6
win(6) = h7
win(7) = h8
win(8) = h9
win(9) = h10
win(10) = h11
win(11) = h12
win(12) = h13
win(13) = h14
win(14) = h15
win(15) = Nothing
wrong(0) = h4
wrong(1) = h1
wrong(2) = h7
wrong(3) = h14
wrong(4) = h5
wrong(5) = h13
wrong(6) = h8
wrong(7) = h10
wrong(8) = h6
wrong(9) = h2
wrong(10) = h12
wrong(11) = h15
wrong(12) = h3
wrong(13) = h11
wrong(14) = h9
wrong(15) = Nothing
images(0) = flower0
images(1) = flower1
images(2) = flower2
images(3) = flower3
images(4) = flower4
images(5) = flower5
images(6) = flower6
images(7) = flower7
images(8) = flower8
images(9) = flower9
images(10) = flower10
images(11) = flower11
images(12) = flower12
images(13) = flower13
images(14) = flower14
images(15) = flower15
For i As Integer = 0 To wrong.Length - 1
images(i).Source = wrong(i)
Next
End Sub
Sub checkwin()
Dim flag As Boolean = False
For i As Integer = 0 To win.Length - 1
If mess(i) Is win(i) Then
flag = True
Else
flag = False
Exit For
End If
Next
If flag = True Then
lbl2.Content = "You Win!!"
End If
End Sub
Sub checkcells(ByRef pic1 As Image, ByRef pic2 As Image)
If pic2.Source Is Nothing Then
pic2.Source = pic1.Source
pic1.Source = Nothing
End If
End Sub
Sub update()
For i As Integer = 0 To mess.Length - 1
mess(i) = images(i).Source
Next
End Sub
Private Sub flower0_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower0.MouseDown
checkcells(flower0, flower1)
checkcells(flower0, flower4)
update()
checkwin()
End Sub
Private Sub flower1_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower1.MouseDown
checkcells(flower1, flower0)
checkcells(flower1, flower2)
checkcells(flower1, flower5)
update()
checkwin()
End Sub
Private Sub flower2_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower2.MouseDown
checkcells(flower2, flower1)
checkcells(flower2, flower3)
checkcells(flower2, flower6)
update()
checkwin()
End Sub
Private Sub flower3_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower3.MouseDown
checkcells(flower3, flower2)
checkcells(flower3, flower7)
update()
checkwin()
End Sub
Private Sub flower4_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower4.MouseDown
checkcells(flower4, flower0)
checkcells(flower4, flower5)
checkcells(flower4, flower8)
update()
checkwin()
End Sub
Private Sub flower5_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower5.MouseDown
checkcells(flower5, flower1)
checkcells(flower5, flower4)
checkcells(flower5, flower6)
checkcells(flower5, flower9)
update()
checkwin()
End Sub
Private Sub flower6_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower6.MouseDown
checkcells(flower6, flower2)
checkcells(flower6, flower5)
checkcells(flower6, flower7)
checkcells(flower6, flower10)
update()
checkwin()
End Sub
Private Sub flower7_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower7.MouseDown
checkcells(flower7, flower3)
checkcells(flower7, flower6)
checkcells(flower7, flower11)
update()
checkwin()
End Sub
Private Sub flower8_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower8.MouseDown
checkcells(flower8, flower4)
checkcells(flower8, flower9)
checkcells(flower8, flower12)
update()
checkwin()
End Sub
Private Sub flower9_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower9.MouseDown
checkcells(flower9, flower5)
checkcells(flower9, flower8)
checkcells(flower9, flower10)
checkcells(flower9, flower13)
update()
checkwin()
End Sub
Private Sub flower10_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower10.MouseDown
checkcells(flower10, flower6)
checkcells(flower10, flower9)
checkcells(flower10, flower11)
checkcells(flower10, flower14)
update()
checkwin()
End Sub
Private Sub flower11_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower11.MouseDown
checkcells(flower11, flower7)
checkcells(flower11, flower10)
checkcells(flower11, flower15)
update()
checkwin()
End Sub
Private Sub flower12_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower12.MouseDown
checkcells(flower12, flower8)
checkcells(flower12, flower13)
update()
checkwin()
End Sub
Private Sub flower13_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower13.MouseDown
checkcells(flower13, flower9)
checkcells(flower13, flower12)
checkcells(flower13, flower14)
update()
checkwin()
End Sub
Private Sub flower14_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower14.MouseDown
checkcells(flower14, flower10)
checkcells(flower14, flower13)
checkcells(flower14, flower15)
update()
checkwin()
End Sub
Private Sub flower15_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles flower15.MouseDown
checkcells(flower15, flower11)
checkcells(flower15, flower14)
update()
checkwin()
End Sub
Private Sub btnmix_Click(sender As Object, e As RoutedEventArgs) Handles btnmix.Click
Randomize()
Dim num(15) As Integer
Dim rnd1 As Integer
For i As Integer = 0 To 15
rnd1 = Int(Rnd() * (16 - 1) + 1)
Dim flag As Boolean = False
Do While flag = False
For x As Integer = 0 To 15
If rnd1 = num(x) Then
flag = True
End If
Next
If flag = True Then
flag = False
rnd1 = Int(Rnd() * (16 - 1) + 1)
Else
flag = True
End If
Loop
num(i) = rnd1
Dim h16 As New BitmapImage
h16.BeginInit()
h16.UriSource = New Uri("images2/h" & rnd1 & ".gif", UriKind.RelativeOrAbsolute)
h16.EndInit()
images(i).Source = h16
Next
End Sub
'Private Sub hint_Click(sender As Object, e As RoutedEventArgs) Handles hint.Click
' Dim monaLisa As New BitmapImage
' monaLisa.BeginInit()
' monaLisa.UriSource = New Uri("images/monalisa.jpg", UriKind.RelativeOrAbsolute)
' monaLisa.EndInit()
' showMona.Source = monaLisa
'End Sub
结束类