1
関数からリストをクリアしたいと思っています。 別の関数からリストをクリアしようとすると、リストが見つかりません。 あなたは私が働いている私の完全なコードを表示する場合、それはここにある：https://pastebin.com/jrLiNZKd関数からリストをクリアする方法VB.NET
Module Module1
Structure Person
Dim Name As String
Dim DoB As Date
End Structure
Dim sFileName As String = "Z:/" ' the name and file path of the saved file
Public Sub Main()
Dim localDir As String = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile)
localDir = localDir & "/People.txt"
sFileName = localDir
Dim tempDir As String = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) & "/temp.tmp"
' create a new list to store our structure data type 'Person'
Dim lstPeople As New List(Of Person)
Dim chMenuOpt As Char
Do
DisplayMenu() ' call sub and display menu options
Console.WriteLine("There are currently " & lstPeople.Count & " people entered.")
chMenuOpt = Console.ReadKey.KeyChar ' get keyboard character and store in chMenuOpt
Select Case chMenuOpt
Case "1"
lstPeople.AddRange(GetPeople) ' get more people and add to lstPeople
Case "6"
Exit Do
Case "7"
IO.File.Create(tempDir).Dispose()
Dim s As New IO.StreamWriter(tempDir, True)
s.WriteLine(lstPeople.Count)
s.Close()
lstPeople.AddRange(TestCrapThing)
Case "8"
MakeFile()
Case "0"
'lstPeople.Clear()
CLearPeople(lstPeople)
End Select
Loop
' user chose to exit program
End Sub
Sub CLearPeople(lst As List(Of Person))
Console.Clear()
Console.WriteLine("All loaded people have been cleared!")
lst.Clear()
Console.WriteLine("Press any key to continue . . . ")
Console.ReadKey()
End Sub
Sub MakeFile()
Console.Clear()
Console.WriteLine("Do you really want to continue [Yes/No]")
Dim innnn As Char = Console.ReadKey.KeyChar
If LCase(innnn) = "y" Then
Console.Clear()
IO.File.Create(sFileName).Dispose()
Console.WriteLine("The file renewed!")
Console.WriteLine("Press any key to continue . . . ")
Console.ReadKey()
Else
End If
End Sub
Sub DisplayMenu()
Console.Clear()
Console.WriteLine("Please pick an option. There are loads to choose from xD")
Console.WriteLine()
Console.WriteLine("1) Add people")
Console.WriteLine("6) Quit")
Console.WriteLine("7) Load from file")
Console.WriteLine("8) Make file/Clear file")
Console.WriteLine("0) Unload people")
Console.WriteLine()
End Sub
Function TestCrapThing() As List(Of Person)
Console.Clear()
Dim count As Decimal = 0
Dim d As New IO.StreamReader(sFileName, True)
Do Until d.EndOfStream = True
d.ReadLine()
count = count + 1
Loop
d.Close()
Console.Clear()
Dim s As New IO.StreamReader(sFileName, True)
' builds a list of people from the user. The user types "Stop" to end the list
' when function ends, the list is returned
Dim tmpPerson As Person ' Used while entering data, added at end
Dim tmpDate As String ' stores user's DOB. This can be checked to see if valid, before storing
Dim tmpPeopleList As New List(Of Person) ' store added names in temporary list
Console.Clear()
' the loop goes around an infinite number of times. Only exits when user types 'Stop'
Console.WriteLine("In progress...")
Console.WriteLine("There are " & count & " lines.")
Console.WriteLine("")
Do Until s.EndOfStream = True
' ############
' # Get Name #
' ############
Dim countt As Decimal = 0
Dim tempstuff As String = s.ReadLine
Dim tempsplit As String() = tempstuff.Split(New Char() {"|"})
Dim part As String = tempsplit(1)
For Each part In tempsplit
countt = countt + 1
tmpPerson.Name = tempsplit(0)
tmpPerson.DoB = CDate(tempsplit(1))
If countt = 2 Then
Console.WriteLine("Added: " & tempsplit(0))
Console.WriteLine("with date of: " & tempsplit(1))
tmpPeopleList.Add(tmpPerson)
countt = 0
End If
Next
Loop ' loop back around to get next person
Dim localDir As String = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile)
Dim tmp As New IO.StreamReader(localDir & "/temp.tmp", True)
If tmp.ReadLine = "0" Then ' If no people are loaded then it won't ask to clear it.
Console.WriteLine("")
Console.WriteLine("Imported new people!")
Console.WriteLine("Press any key to continue . . . ")
Console.ReadKey()
tmp.Close()
s.Close()
Return tmpPeopleList
Else
Console.WriteLine("")
Console.WriteLine("Do you want to clear all the existing people loaded into the program? [Yes/No]")
Dim inputty As Char = Console.ReadKey.KeyChar
If inputty = "y" Then
'need finish !!!!!!!!!!!!THIS IS WHERE I WANT TO CLEAR THE LIST !!!!!!
Return tmpPeopleList ' send temporary list back for processing
Console.WriteLine("")
Console.WriteLine("Cleared people and imported new people!")
Console.WriteLine("Press any key to continue . . . ")
Else
tmp.Close()
s.Close()
Return tmpPeopleList ' send temporary list back for processing
Console.WriteLine("")
Console.WriteLine("imported new people!")
Console.WriteLine("Press any key to continue . . . ")
End If
End If
Console.ReadKey()
tmp.Close()
s.Close()
End Function
Function GetPeople() As List(Of Person)
' builds a list of people from the user. The user types "Stop" to end the list
' when function ends, the list is returned
Dim tmpPerson As Person ' Used while entering data, added at end
Dim tmpDate As String ' stores user's DOB. This can be checked to see if valid, before storing
Dim tmpPeopleList As New List(Of Person) ' store added names in temporary list
Console.Clear()
' the loop goes around an infinite number of times. Only exits when user types 'Stop'
Do
' ############
' # Get Name #
' ############
Console.WriteLine("Please enter the person's name. Type 'Stop' or 'Quit' to finish entering names.")
tmpPerson.Name = Console.ReadLine ' get name
If LCase(tmpPerson.Name) = "stop" Or LCase(tmpPerson.Name) = "quit" Then
Exit Do ' immediately exit, do not add to the list
End If
' ###########
' # Get DOB #
' ###########
Do ' loop infinitely until user gives a valid date.
Console.WriteLine("Please enter " & tmpPerson.Name & "'s DOB.")
tmpDate = Console.ReadLine ' read into temporary string to validate date
If IsDate(tmpDate) = False Then ' user entered an invalid date
Console.WriteLine("Sorry, that was an invalid date. Please try again.")
Else
tmpPerson.DoB = CDate(tmpDate) ' convert to a date and store
Exit Do ' quit infinite loop as we have a valid date
End If
Loop
tmpPeopleList.Add(tmpPerson) ' remember, a function becomes the return value.
Loop ' loop back around to get next person
Return tmpPeopleList ' send temporary list back for processing
End Function
End Module
「それはリストが見つかりません」という意味ですか？それはあなたがその明確な方法を呼び出すように見えません – Plutonix
私は関数からリストをクリアする方法を見つけたいと思います。それは宣言されていないと言います – Simas
@Simasそれはそれが宣言されていないと言う行ですか？ – Jaxi