키를 찾을 수 없습니다 wp7

Question

버튼을 누르면 "키를 찾을 수 없습니다"오류가 발생합니다. 나는 변수 "dzien"의 기본값을 갖고 싶어 = 0

Imports System.IO.IsolatedStorage 

Partial Public Class _1 
Inherits PhoneApplicationPage 
Private dzien As Integer 

Public Sub New() 
    InitializeComponent() 

End Sub 

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button2.Click 
    dzien = CInt(IsolatedStorageSettings.ApplicationSettings("dzien")) 
    Try 
     dzien = CInt(IsolatedStorageSettings.ApplicationSettings("dzien")) 
    Catch ex As KeyNotFoundException 
     dzien = 0 
    End Try 
    If dzien = 0 Then 
     TextBox1.Text += "dzien jest 0 !" 
    End If 
End Sub 
Private Sub Class_1_Unloaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Me.Unloaded 
    IsolatedStorageSettings.ApplicationSettings("dzien") = dzien 
End Sub 

최종 클래스

Answer 1

첫 dzien = CInt(IsolatedStorageSettings.ApplicationSettings("dzien")) 라인을 제거합니다. 다음과 같이 표시되어야합니다.

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button2.Click 
    Try 
     dzien = CInt(IsolatedStorageSettings.ApplicationSettings("dzien")) 
    Catch ex As KeyNotFoundException 
     dzien = 0 
    End Try 
    If dzien = 0 Then 
     TextBox1.Text += "dzien jest 0 !" 
    End If 
End Sub