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4.10.2-1 4.10.2-2 , .
StreamReader, StreamWriter My.Computer.FileSystem
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| ' Sub readfile1(ByVal filename As String, ByRef p As String) ' Dim Rf As StreamReader Rf = New StreamReader(filename) Try p = Rf.ReadToEnd() ' p Rf.close() ' Catch ex As Exception MsgBox(" ") End Try End Sub |
. 4.10.2-1. readfile1()
StreamReader StreamWriter, : Imports System.IO.
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| ' , ' Sub readfile2(ByVal filename As String, _ ByRef n As Integer, ByRef p As String) ' Dim Rf As New StreamReader(filename) Dim line As String p = "" ' n = 0 ' Try Do While Not Rf.EndOfStream() ' line = Rf.ReadLine() ' line n = n + 1: p = p & line & vbNewLine Loop Rf.Close() ' Catch ex As Exception MsgBox(" ") End Try End Sub |
. 4.10.2-2. readfile2()
StreamReader .NET Framework . . 4.10.2-1
. 4.10.2-2 . filename ( ) p (, , ).
, . 4.10.2-1 . 4.10.2-2, Rf StreamReader . : .4.10.3-1 ReadToEnd() p, ( ) ; . 4.10.2-2 ReadLine() Rf line. ReadLine() , (endOfStream).
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StreamWriter , .
. 4.10.2-3 . 4.10.2-4 , . filename p , .
| ' Sub writefile1(ByVal filename As String, ByVal p As String) ' If File.Exists(filename)Then MsgBox(" "&filename " ") Exit Sub End If ' . wf '1 Dim wf As StreamWriter = File.CreateText(filename) '2 Dim wf As New StreamWriter(filename) wf.WriteLine(p) ' wf.Flush() ' wf.Close() ' End Sub |
. 4.10.2-3. writefile1()
| ' ' , Sub writefile2(ByVal filename As String, ByVal p As String) ' If File.Exists(filename) = False Then MsgBox(" " & filename & " ") End If '1) wf 'Dim wf As StreamWriter = File.AppendText(filename) '2) True 2- , ' Dim wf As New StreamWriter(filename, True) wf.WriteLine(p) ' wf.Flush() ' wf.Close() ' End Sub |
. 4.10.2-4. writefile2()
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wf StreamWriter , . True, p . False , ( ) , p.
4.10.2-1
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. 4.10.2-5. MsgBox(My.User.Name)
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, My.Computer.FileSystem ReadAllText(). , . 4.10.3-6.
ReadAllText() ( , Str), ,
LineInput().
| ' ' TextBox Sub vvodFile(ByVal filename As String, _ ByRef Str As String, ByRef T As TextBox) ' ' Str Try Str = My.Computer.FileSystem.ReadAllText(filename) T.Text = Str Catch ex As Exception MsgBox(" ") End Try End Sub |
. 4.10.2-6. vvodFile()
ReadAllText() ( Str), ,
LineInput().
My.Computer.FileSystem . , My.Computer.FileSystem , . LineInput() StreamReader , My, . . . , , .
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WriteAllText(). , . 4.10.2-7.
WriteAllText() . True, , ; False, ( ).
| ' Sub vivodFile(ByVal filename As String, ByRef Str3 As String) ' - Str3 ; (False) ' , . Try My.Computer.FileSystem.WriteAllText(filename, Str3, False) Catch ex As Exception MsgBox(" () ") End Try End Sub |
. 4.10.2-7. vivodFile()
