FileInfo.MoveTo Metoda
Definicja
Ważne
Niektóre informacje odnoszą się do produktu w wersji wstępnej, który może zostać znacząco zmodyfikowany przed wydaniem. Firma Microsoft nie udziela żadnych gwarancji, jawnych lub domniemanych, w odniesieniu do informacji podanych w tym miejscu.
Przeciążenia
| MoveTo(String) |
Przenosi określony plik do nowej lokalizacji, podając opcję określenia nowej nazwy pliku. |
| MoveTo(String, Boolean) |
Przenosi określony plik do nowej lokalizacji, udostępniając opcje określania nowej nazwy pliku i zastępowania pliku docelowego, jeśli już istnieje. |
MoveTo(String)
- Źródło:
- FileInfo.cs
- Źródło:
- FileInfo.cs
- Źródło:
- FileInfo.cs
Przenosi określony plik do nowej lokalizacji, podając opcję określenia nowej nazwy pliku.
public:
void MoveTo(System::String ^ destFileName);public void MoveTo (string destFileName);member this.MoveTo : string -> unitPublic Sub MoveTo (destFileName As String)Parametry
- destFileName
- String
Ścieżka umożliwiająca przeniesienie pliku do, do którego można określić inną nazwę pliku.
Wyjątki
Występuje błąd we/wy, taki jak plik docelowy już istnieje lub urządzenie docelowe nie jest gotowe.
destFileName to null.
.NET Framework i .NET Core w wersji starszej niż 2.1: destFileName jest pusta, zawiera tylko białe spacje lub zawiera nieprawidłowe znaki.
Obiekt wywołujący nie posiada wymaganych uprawnień.
destFileName jest tylko do odczytu lub jest katalogiem.
Nie można odnaleźć pliku.
Określona ścieżka jest nieprawidłowa, na przykład na dysku niezamapowanym.
Podana ścieżka, nazwa pliku lub obie przekraczają maksymalną długość zdefiniowaną przez system.
destFileName zawiera dwukropek (:) w środku ciągu.
Przykłady
W poniższym przykładzie pokazano przeniesienie pliku do innej lokalizacji i zmianę nazwy pliku.
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.IO;
using System.Reflection;
using System.Security.Permissions;
using System.Text;
using System.Text.RegularExpressions;
using System.Xml;
namespace Microsoft.Samples.MoveTo.CS
{
class Program
{
private static string sourcePath = Environment.GetFolderPath
(Environment.SpecialFolder.MyDocuments) +
@"\FileInfoTestDirectory\MoveFrom\FromFile.xml";
private static string destPath = Environment.GetFolderPath
(Environment.SpecialFolder.MyDocuments) +
@"\FileInfoTestDirectory\DestFile.xml";
//
// The main entry point for the application.
//
[STAThread()] static void Main ()
{
// Change Console properties to make it obvious that
// the application is starting.
Console.Clear();
// Move it to the upper left corner of the screen.
Console.SetWindowPosition(0, 0);
// Make it very large.
Console.SetWindowSize(Console.LargestWindowWidth - 24,
Console.LargestWindowHeight - 16);
Console.WriteLine("Welcome.");
Console.WriteLine("This application demonstrates the FileInfo.MoveTo method.");
Console.WriteLine("Press any key to start.");
string s = Console.ReadLine();
Console.Write(" Checking whether ");
Console.Write(sourcePath);
Console.WriteLine(" exists.");
FileInfo fInfo = new FileInfo (sourcePath);
EnsureSourceFileExists();
DisplayFileProperties(fInfo);
Console.WriteLine("Preparing to move the file to ");
Console.Write(destPath);
Console.WriteLine(".");
MoveFile(fInfo);
DisplayFileProperties(fInfo);
Console.WriteLine("Preparing to delete directories.");
DeleteFiles();
Console.WriteLine("Press the ENTER key to close this application.");
s = Console.ReadLine();
}
//
// Moves the supplied FileInfo instance to destPath.
//
private static void MoveFile(FileInfo fInfo)
{
try
{
fInfo.MoveTo(destPath);
Console.WriteLine("File moved to ");
Console.WriteLine(destPath);
} catch (Exception ex) {
DisplayException(ex);
}
}
//
// Ensures that the test directories
// and the file FromFile.xml all exist.
//
private static void EnsureSourceFileExists()
{
FileInfo fInfo = new FileInfo(sourcePath);
string dirPath = fInfo.Directory.FullName;
if (!Directory.Exists(dirPath))
{
Directory.CreateDirectory(dirPath);
}
if (File.Exists(destPath))
{
File.Delete(destPath);
}
Console.Write("Creating file ");
Console.Write(fInfo.FullName);
Console.WriteLine(".");
try
{
if (!fInfo.Exists)
{
Console.WriteLine("Adding data to the file.");
WriteFileContent(10);
Console.WriteLine("Successfully created the file.");
}
}
catch (Exception ex)
{
DisplayException(ex);
}
finally
{
dirPath = null;
}
}
//
// Creates and saves an Xml file to sourcePath.
//
private static void WriteFileContent(int totalElements)
{
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
doc.AppendChild(doc.CreateXmlDeclaration("1.0", null, "yes"));
doc.AppendChild(doc.CreateWhitespace("\r\n"));
XmlElement root = doc.CreateElement("FileInfo.MoveTo");
root.AppendChild(doc.CreateWhitespace("\r\n"));
int index = 0;
XmlElement elem;
while (index < totalElements)
{
elem = doc.CreateElement("MyElement");
elem.SetAttribute("Index", index.ToString());
elem.AppendChild(doc.CreateWhitespace("\r\n"));
elem.AppendChild(doc.CreateTextNode(String.Format
("MyElement at position {0}.", index)));
elem.AppendChild(doc.CreateWhitespace("\r\n"));
root.AppendChild(elem);
root.AppendChild(doc.CreateWhitespace("\r\n"));
index++;
}
doc.AppendChild(root);
doc.AppendChild(doc.CreateWhitespace("\r\n"));
doc.Save(sourcePath);
elem = null;
root = null;
doc = null;
}
//
// Displays FullName, CreationTime, and LastWriteTime of the supplied
// FileInfo instance, then displays the text of the file.
//
private static void DisplayFileProperties(FileInfo fInfo)
{
Console.WriteLine("The FileInfo instance shows these property values.");
StreamReader reader = null;
try
{
Console.Write("FullName: ");
Console.WriteLine(fInfo.FullName);
Console.Write("CreationTime: ");
Console.WriteLine(fInfo.CreationTime);
Console.Write("LastWriteTime: ");
Console.WriteLine(fInfo.LastWriteTime);
Console.WriteLine();
Console.WriteLine("File contents:");
Console.WriteLine();
reader = new StreamReader(fInfo.FullName);
while (!reader.EndOfStream)
{
Console.WriteLine(reader.ReadLine());
}
Console.WriteLine();
}
catch (Exception ex)
{
DisplayException(ex);
}
finally
{
if (reader != null)
{
reader.Close();
}
reader = null;
}
}
//
// Deletes the test directory and all its files and subdirectories.
//
private static void DeleteFiles()
{
try
{
DirectoryInfo dInfo = new DirectoryInfo(Environment.GetFolderPath
(Environment.SpecialFolder.MyDocuments) + "\\FileInfoTestDirectory");
if (dInfo.Exists)
{
dInfo.Delete(true);
Console.WriteLine("Successfully deleted directories and files.");
}
dInfo = null;
}
catch (Exception ex)
{
DisplayException(ex);
}
}
//
// Displays information about the supplied Exception. This
// code is not suitable for production applications.
//
private static void DisplayException(Exception ex)
{
StringBuilder sb = new StringBuilder();
sb.Append("An exception of type \"");
sb.Append(ex.GetType().FullName);
sb.Append("\" has occurred.\r\n");
sb.Append(ex.Message);
sb.Append("\r\nStack trace information:\r\n");
MatchCollection matchCol = Regex.Matches(ex.StackTrace,
@"(at\s)(.+)(\.)([^\.]*)(\()([^\)]*)(\))((\sin\s)(.+)(:line )([\d]*))?");
int L = matchCol.Count;
string[] argList;
Match matchObj;
int y, K;
for(int x = 0; x < L; x++)
{
matchObj = matchCol[x];
sb.Append(matchObj.Result("\r\n\r\n$1 $2$3$4$5"));
argList = matchObj.Groups[6].Value.Split(new char[] { ',' });
K = argList.Length;
for (y = 0; y < K; y++)
{
sb.Append("\r\n ");
sb.Append(argList[y].Trim().Replace(" ", " "));
sb.Append(',');
}
sb.Remove(sb.Length - 1, 1);
sb.Append("\r\n)");
if (0 < matchObj.Groups[8].Length)
{
sb.Append(matchObj.Result("\r\n$10\r\nline $12"));
}
}
argList = null;
matchObj = null;
matchCol = null;
Console.WriteLine(sb.ToString());
sb = null;
}
}
}
//This code produces output similar to the following;
//results may vary based on the computer/file structure/etc.:
//
// Welcome.
// This application demonstrates the FileInfo.MoveTo method.
// Press any key to start.
//
// Checking whether C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml exists.
// Creating file C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml.
// Adding data to the file.
// Successfully created the file.
// The FileInfo instance shows these property values.
// FullName: C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml
// CreationTime: 4/18/2006 1:24:19 PM
// LastWriteTime: 4/18/2006 1:24:19 PM
//
// File contents:
//
// <?xml version="1.0" standalone="yes"?>
// <MyElement Index="0">
// MyElement at position 0.
// <MyElement Index="1">
// MyElement at position 1.
// <MyElement Index="2">
// MyElement at position 2.
// <MyElement Index="3">
// MyElement at position 3.
// <MyElement Index="4">
// MyElement at position 4.
// <MyElement Index="5">
// MyElement at position 5.
// <MyElement Index="6">
// MyElement at position 6.
// <MyElement Index="7">
// MyElement at position 7.
// <MyElement Index="8">
// MyElement at position 8.
// <MyElement Index="9">
// MyElement at position 9.
// Preparing to move the file to
// C:\Documents and Settings\MYComputer\My Documents\FileInfoTestDirectory\DestFile.xml.
// File moved to
// C:\Documents and Settings\MYComputer\My Documents\FileInfoTestDirectory\DestFile.xml
// The FileInfo instance shows these property values.
// FullName: C:\Documents and Settings\MYComputer\My Documents\FileInfoTestDirectory\DestFile.xml
// CreationTime: 4/18/2006 1:24:19 PM
// LastWriteTime: 4/18/2006 1:24:19 PM
//
// File contents:
//
// <?xml version="1.0" standalone="yes"?>
// <MyElement Index="0">
// MyElement at position 0.
// <MyElement Index="1">
// MyElement at position 1.
// <MyElement Index="2">
// MyElement at position 2.
// <MyElement Index="3">
// MyElement at position 3.
// <MyElement Index="4">
// MyElement at position 4.
// <MyElement Index="5">
// MyElement at position 5.
// <MyElement Index="6">
// MyElement at position 6.
// <MyElement Index="7">
// MyElement at position 7.
// <MyElement Index="8">
// MyElement at position 8.
// <MyElement Index="9">
// MyElement at position 9.
//
// Preparing to delete directories.
// Successfully deleted directories and files.
// Press the ENTER key to close this application.
Imports System.IO
Imports System.Text
Imports System.Text.RegularExpressions
Imports System.Xml
Module Program
Private sourcePath As String = Environment.GetFolderPath _
(Environment.SpecialFolder.MyDocuments) & _
"\FileInfoTestDirectory\MoveFrom\FromFile.xml"
'
Private destPath As String = Environment.GetFolderPath _
(Environment.SpecialFolder.MyDocuments) & _
"\FileInfoTestDirectory\DestFile.xml"
'
' The main entry point for the application.
'
<STAThread()> Sub Main()
' Change Console properties to make it obvious that
' the application is starting.
Console.Clear()
' Move it to the upper left corner of the screen.
Console.SetWindowPosition(0, 0)
' Make it very large.
Console.SetWindowSize(Console.LargestWindowWidth - 24, _
Console.LargestWindowHeight - 16)
Console.WriteLine("Welcome.")
Console.WriteLine("This application demonstrates the FileInfo.MoveTo method.")
Console.WriteLine("Press any key to start.")
Dim s As String = Console.ReadLine()
Console.Write(" Checking whether ")
Console.Write(sourcePath)
Console.WriteLine(" exists.")
Dim fInfo As FileInfo = New FileInfo(sourcePath)
EnsureSourceFileExists()
DisplayFileProperties(fInfo)
Console.WriteLine("Preparing to move the file to ")
Console.Write(destPath)
Console.WriteLine(".")
MoveFile(fInfo)
DisplayFileProperties(fInfo)
Console.WriteLine("Preparing to delete directories.")
DeleteFiles()
Console.WriteLine("Press the ENTER key to close this application.")
s = Console.ReadLine()
End Sub
'
' Moves the supplied FileInfo instance to destPath.
'
Private Sub MoveFile(ByVal fInfo As FileInfo)
Try
fInfo.MoveTo(destPath)
Console.WriteLine("File moved to ")
Console.WriteLine(destPath)
Catch ex As Exception
DisplayException(ex)
End Try
End Sub
'
' Ensures that the test directories
' and the file FromFile.xml all exist.
'
Private Sub EnsureSourceFileExists()
' Create a FileInfo instance, and get the full path
' to the parent directory.
Dim fInfo As FileInfo = New FileInfo(sourcePath)
Dim dirPath As String = fInfo.Directory.FullName
' If the directory does not exist, create it.
If Not Directory.Exists(dirPath) Then
Directory.CreateDirectory(dirPath)
End If
' If DestFile.xml exists, delete it.
If File.Exists(destPath) Then
File.Delete(destPath)
End If
Console.Write("Creating file ")
Console.Write(fInfo.FullName)
Console.WriteLine(".")
Try
If Not fInfo.Exists Then
' Call WriteFileContent to create the file.
Console.WriteLine("Adding data to the file.")
WriteFileContent(10)
Console.WriteLine("Successfully created the file.")
End If
Catch ex As Exception
DisplayException(ex)
Finally
dirPath = Nothing
fInfo = Nothing
End Try
End Sub
'
' Creates and saves an Xml file to sourcePath.
'
Private Sub WriteFileContent(ByVal totalElements As Integer)
Dim doc As New XmlDocument()
doc.PreserveWhitespace = True
doc.AppendChild(doc.CreateXmlDeclaration("1.0", Nothing, "yes"))
doc.AppendChild(doc.CreateWhitespace(ControlChars.CrLf))
Dim root As XmlElement = doc.CreateElement("FileInfo.MoveTo")
Dim index As Integer = 0
Dim elem As XmlElement
While index < totalElements
elem = doc.CreateElement("MyElement")
elem.SetAttribute("Index", index.ToString())
elem.AppendChild(doc.CreateWhitespace(ControlChars.CrLf))
elem.AppendChild(doc.CreateTextNode(String.Format _
("MyElement at position {0}.", index)))
elem.AppendChild(doc.CreateWhitespace(ControlChars.CrLf))
root.AppendChild(elem)
index += 1
End While
doc.AppendChild(root)
doc.AppendChild(doc.CreateWhitespace(ControlChars.CrLf))
doc.Save(sourcePath)
End Sub
'
' Displays FullName, CreationTime, and LastWriteTime of the supplied
' FileInfo instance, then displays the text of the file.
'
Private Sub DisplayFileProperties(ByVal fInfo As FileInfo)
Console.WriteLine("The FileInfo instance shows these property values.")
Dim reader As StreamReader = Nothing
Try
Console.Write("FullName: ")
Console.WriteLine(fInfo.FullName)
Console.Write("CreationTime: ")
Console.WriteLine(fInfo.CreationTime)
Console.Write("LastWriteTime: ")
Console.WriteLine(fInfo.LastWriteTime)
Console.WriteLine()
Console.WriteLine("File contents:")
Console.WriteLine()
reader = New StreamReader(fInfo.FullName)
While Not reader.EndOfStream
Console.WriteLine(reader.ReadLine())
End While
Console.WriteLine()
Catch ex As Exception
DisplayException(ex)
Finally
If Not reader Is Nothing Then
reader.Close()
reader = Nothing
End If
End Try
End Sub
'
' Deletes the test directory and all its files and subdirectories.
'
Private Sub DeleteFiles()
Try
Dim dInfo As DirectoryInfo = New DirectoryInfo(Environment.GetFolderPath _
(Environment.SpecialFolder.MyDocuments) + "\FileInfoTestDirectory")
If dInfo.Exists Then
dInfo.Delete(True)
Console.WriteLine("Successfully deleted directories and files.")
End If
dInfo = Nothing
Catch ex As Exception
DisplayException(ex)
End Try
End Sub
'
' Displays information about the supplied Exception. This
' code is not suitable for production applications.
'
Private Sub DisplayException(ByVal ex As Exception)
Dim sb As New StringBuilder("An exception of type """)
sb.Append(ex.GetType().FullName)
sb.Append(""" has occurred.")
sb.Append(ControlChars.CrLf)
sb.Append(ex.Message)
sb.Append(ControlChars.CrLf)
sb.Append("Stack trace information:")
sb.Append(ControlChars.CrLf)
Dim matchCol As MatchCollection = Regex.Matches(ex.StackTrace, _
"(at\s)(.+)(\.)([^\.]*)(\()([^\)]*)(\))((\sin\s)(.+)(:line )([\d]*))?")
Dim L As Integer = matchCol.Count
Dim y, K As Integer
Dim argList() As String
Dim matchObj As Match
Dim x As Integer = 0
While x < L
matchObj = matchCol(x)
sb.Append(ControlChars.CrLf)
sb.Append(ControlChars.CrLf)
sb.Append(matchObj.Result("$1 $2$3$4$5"))
argList = matchObj.Groups(6).Value.Split(New Char() {","})
K = argList.Length
y = 0
While y < K
sb.Append(ControlChars.CrLf)
sb.Append(" ")
sb.Append(argList(y).Trim().Replace(" ", " "))
sb.Append(",")
y += 1
End While
sb.Remove(sb.Length - 1, 1)
sb.Append(ControlChars.CrLf)
If 0 < matchObj.Groups(8).Length Then
sb.Append(ControlChars.CrLf)
sb.Append(matchObj.Result("$10"))
sb.Append(ControlChars.CrLf)
sb.Append(matchObj.Result("line $12"))
End If
x += 1
End While
argList = Nothing
matchObj = Nothing
matchCol = Nothing
Console.WriteLine(sb.ToString())
sb = Nothing
Return
End Sub
End Module
' Welcome.
' This application demonstrates the FileInfo.MoveTo method.
' Press any key to start.
'
' Checking whether C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml exists.
' Creating file C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml.
' Adding data to the file.
' Successfully created the file.
' The FileInfo instance shows these property values.
' FullName: C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml
' CreationTime: 4/18/2006 1:38:19 PM
' LastWriteTime: 4/18/2006 1:38:19 PM
'
' File contents:
'
' <?xml version="1.0" standalone="yes"?>
' <FileInfo.MoveTo><MyElement Index="0">
' MyElement at position 0.
' </MyElement><MyElement Index="1">
' MyElement at position 1.
' </MyElement><MyElement Index="2">
' MyElement at position 2.
' </MyElement><MyElement Index="3">
' MyElement at position 3.
' </MyElement><MyElement Index="4">
' MyElement at position 4.
' </MyElement><MyElement Index="5">
' MyElement at position 5.
' </MyElement><MyElement Index="6">
' MyElement at position 6.
' </MyElement><MyElement Index="7">
' MyElement at position 7.
' </MyElement><MyElement Index="8">
' MyElement at position 8.
' </MyElement><MyElement Index="9">
' MyElement at position 9.
' </MyElement></FileInfo.MoveTo>
'
' Preparing to move the file to
' C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\DestFile.xml.
' File moved to
' C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\DestFile.xml
' The FileInfo instance shows these property values.
' FullName: C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\DestFile.xml
' CreationTime: 4/18/2006 1:38:19 PM
' LastWriteTime: 4/18/2006 1:38:19 PM
'
' File contents:
'
' <?xml version="1.0" standalone="yes"?>
' <FileInfo.MoveTo><MyElement Index="0">
' MyElement at position 0.
' </MyElement><MyElement Index="1">
' MyElement at position 1.
' </MyElement><MyElement Index="2">
' MyElement at position 2.
' </MyElement><MyElement Index="3">
' MyElement at position 3.
' </MyElement><MyElement Index="4">
' MyElement at position 4.
' </MyElement><MyElement Index="5">
' MyElement at position 5.
' </MyElement><MyElement Index="6">
' MyElement at position 6.
' </MyElement><MyElement Index="7">
' MyElement at position 7.
' </MyElement><MyElement Index="8">
' MyElement at position 8.
' </MyElement><MyElement Index="9">
' MyElement at position 9.
' </MyElement></FileInfo.MoveTo>
'
' Preparing to delete directories.
' Successfully deleted directories and files.
' Press the ENTER key to close this application.
Uwagi
Ta metoda działa na woluminach dysków. Na przykład c:\MyFile.txt pliku można przenieść do d:\public i zmienić nazwę NewFile.txt.
Ta metoda nie zastępuje pliku docelowego, jeśli już istnieje. W tym celu wywołaj metodę MoveTo(String, Boolean) .
Zobacz też
- We/wy plików i Stream
- Instrukcje: Odczytywanie tekstu z pliku
- Instrukcje: Zapisywanie tekstu w pliku
Dotyczy
MoveTo(String, Boolean)
- Źródło:
- FileInfo.cs
- Źródło:
- FileInfo.cs
- Źródło:
- FileInfo.cs
Przenosi określony plik do nowej lokalizacji, udostępniając opcje określania nowej nazwy pliku i zastępowania pliku docelowego, jeśli już istnieje.
public:
void MoveTo(System::String ^ destFileName, bool overwrite);public void MoveTo (string destFileName, bool overwrite);member this.MoveTo : string * bool -> unitPublic Sub MoveTo (destFileName As String, overwrite As Boolean)Parametry
- destFileName
- String
Ścieżka umożliwiająca przeniesienie pliku do, do którego można określić inną nazwę pliku.
- overwrite
- Boolean
true aby zastąpić plik docelowy, jeśli już istnieje; false Inaczej.
Wyjątki
Wystąpił błąd we/wy, taki jak urządzenie docelowe, nie jest gotowe.
destFileName to null.
.NET Framework i .NET Core w wersji starszej niż 2.1: destFileName jest pusta, zawiera tylko białe spacje lub zawiera nieprawidłowe znaki.
Obiekt wywołujący nie posiada wymaganych uprawnień.
destFileName jest tylko do odczytu lub jest katalogiem.
Nie można odnaleźć pliku.
Określona ścieżka jest nieprawidłowa, na przykład na dysku niezamapowanym.
Podana ścieżka, nazwa pliku lub obie przekraczają maksymalną długość zdefiniowaną przez system.
destFileName zawiera dwukropek (:) w środku ciągu.
Przykłady
W poniższym przykładzie pokazano przeniesienie pliku do innej lokalizacji i zmianę nazwy pliku.
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.IO;
using System.Reflection;
using System.Security.Permissions;
using System.Text;
using System.Text.RegularExpressions;
using System.Xml;
namespace Microsoft.Samples.MoveTo.CS
{
class Program
{
private static string sourcePath = Environment.GetFolderPath
(Environment.SpecialFolder.MyDocuments) +
@"\FileInfoTestDirectory\MoveFrom\FromFile.xml";
private static string destPath = Environment.GetFolderPath
(Environment.SpecialFolder.MyDocuments) +
@"\FileInfoTestDirectory\DestFile.xml";
//
// The main entry point for the application.
//
[STAThread()] static void Main ()
{
// Change Console properties to make it obvious that
// the application is starting.
Console.Clear();
// Move it to the upper left corner of the screen.
Console.SetWindowPosition(0, 0);
// Make it very large.
Console.SetWindowSize(Console.LargestWindowWidth - 24,
Console.LargestWindowHeight - 16);
Console.WriteLine("Welcome.");
Console.WriteLine("This application demonstrates the FileInfo.MoveTo method.");
Console.WriteLine("Press any key to start.");
string s = Console.ReadLine();
Console.Write(" Checking whether ");
Console.Write(sourcePath);
Console.WriteLine(" exists.");
FileInfo fInfo = new FileInfo (sourcePath);
EnsureSourceFileExists();
DisplayFileProperties(fInfo);
Console.WriteLine("Preparing to move the file to ");
Console.Write(destPath);
Console.WriteLine(".");
MoveFile(fInfo);
DisplayFileProperties(fInfo);
Console.WriteLine("Preparing to delete directories.");
DeleteFiles();
Console.WriteLine("Press the ENTER key to close this application.");
s = Console.ReadLine();
}
//
// Moves the supplied FileInfo instance to destPath.
//
private static void MoveFile(FileInfo fInfo)
{
try
{
fInfo.MoveTo(destPath);
Console.WriteLine("File moved to ");
Console.WriteLine(destPath);
} catch (Exception ex) {
DisplayException(ex);
}
}
//
// Ensures that the test directories
// and the file FromFile.xml all exist.
//
private static void EnsureSourceFileExists()
{
FileInfo fInfo = new FileInfo(sourcePath);
string dirPath = fInfo.Directory.FullName;
if (!Directory.Exists(dirPath))
{
Directory.CreateDirectory(dirPath);
}
if (File.Exists(destPath))
{
File.Delete(destPath);
}
Console.Write("Creating file ");
Console.Write(fInfo.FullName);
Console.WriteLine(".");
try
{
if (!fInfo.Exists)
{
Console.WriteLine("Adding data to the file.");
WriteFileContent(10);
Console.WriteLine("Successfully created the file.");
}
}
catch (Exception ex)
{
DisplayException(ex);
}
finally
{
dirPath = null;
}
}
//
// Creates and saves an Xml file to sourcePath.
//
private static void WriteFileContent(int totalElements)
{
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
doc.AppendChild(doc.CreateXmlDeclaration("1.0", null, "yes"));
doc.AppendChild(doc.CreateWhitespace("\r\n"));
XmlElement root = doc.CreateElement("FileInfo.MoveTo");
root.AppendChild(doc.CreateWhitespace("\r\n"));
int index = 0;
XmlElement elem;
while (index < totalElements)
{
elem = doc.CreateElement("MyElement");
elem.SetAttribute("Index", index.ToString());
elem.AppendChild(doc.CreateWhitespace("\r\n"));
elem.AppendChild(doc.CreateTextNode(String.Format
("MyElement at position {0}.", index)));
elem.AppendChild(doc.CreateWhitespace("\r\n"));
root.AppendChild(elem);
root.AppendChild(doc.CreateWhitespace("\r\n"));
index++;
}
doc.AppendChild(root);
doc.AppendChild(doc.CreateWhitespace("\r\n"));
doc.Save(sourcePath);
elem = null;
root = null;
doc = null;
}
//
// Displays FullName, CreationTime, and LastWriteTime of the supplied
// FileInfo instance, then displays the text of the file.
//
private static void DisplayFileProperties(FileInfo fInfo)
{
Console.WriteLine("The FileInfo instance shows these property values.");
StreamReader reader = null;
try
{
Console.Write("FullName: ");
Console.WriteLine(fInfo.FullName);
Console.Write("CreationTime: ");
Console.WriteLine(fInfo.CreationTime);
Console.Write("LastWriteTime: ");
Console.WriteLine(fInfo.LastWriteTime);
Console.WriteLine();
Console.WriteLine("File contents:");
Console.WriteLine();
reader = new StreamReader(fInfo.FullName);
while (!reader.EndOfStream)
{
Console.WriteLine(reader.ReadLine());
}
Console.WriteLine();
}
catch (Exception ex)
{
DisplayException(ex);
}
finally
{
if (reader != null)
{
reader.Close();
}
reader = null;
}
}
//
// Deletes the test directory and all its files and subdirectories.
//
private static void DeleteFiles()
{
try
{
DirectoryInfo dInfo = new DirectoryInfo(Environment.GetFolderPath
(Environment.SpecialFolder.MyDocuments) + "\\FileInfoTestDirectory");
if (dInfo.Exists)
{
dInfo.Delete(true);
Console.WriteLine("Successfully deleted directories and files.");
}
dInfo = null;
}
catch (Exception ex)
{
DisplayException(ex);
}
}
//
// Displays information about the supplied Exception. This
// code is not suitable for production applications.
//
private static void DisplayException(Exception ex)
{
StringBuilder sb = new StringBuilder();
sb.Append("An exception of type \"");
sb.Append(ex.GetType().FullName);
sb.Append("\" has occurred.\r\n");
sb.Append(ex.Message);
sb.Append("\r\nStack trace information:\r\n");
MatchCollection matchCol = Regex.Matches(ex.StackTrace,
@"(at\s)(.+)(\.)([^\.]*)(\()([^\)]*)(\))((\sin\s)(.+)(:line )([\d]*))?");
int L = matchCol.Count;
string[] argList;
Match matchObj;
int y, K;
for(int x = 0; x < L; x++)
{
matchObj = matchCol[x];
sb.Append(matchObj.Result("\r\n\r\n$1 $2$3$4$5"));
argList = matchObj.Groups[6].Value.Split(new char[] { ',' });
K = argList.Length;
for (y = 0; y < K; y++)
{
sb.Append("\r\n ");
sb.Append(argList[y].Trim().Replace(" ", " "));
sb.Append(',');
}
sb.Remove(sb.Length - 1, 1);
sb.Append("\r\n)");
if (0 < matchObj.Groups[8].Length)
{
sb.Append(matchObj.Result("\r\n$10\r\nline $12"));
}
}
argList = null;
matchObj = null;
matchCol = null;
Console.WriteLine(sb.ToString());
sb = null;
}
}
}
//This code produces output similar to the following;
//results may vary based on the computer/file structure/etc.:
//
// Welcome.
// This application demonstrates the FileInfo.MoveTo method.
// Press any key to start.
//
// Checking whether C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml exists.
// Creating file C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml.
// Adding data to the file.
// Successfully created the file.
// The FileInfo instance shows these property values.
// FullName: C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml
// CreationTime: 4/18/2006 1:24:19 PM
// LastWriteTime: 4/18/2006 1:24:19 PM
//
// File contents:
//
// <?xml version="1.0" standalone="yes"?>
// <MyElement Index="0">
// MyElement at position 0.
// <MyElement Index="1">
// MyElement at position 1.
// <MyElement Index="2">
// MyElement at position 2.
// <MyElement Index="3">
// MyElement at position 3.
// <MyElement Index="4">
// MyElement at position 4.
// <MyElement Index="5">
// MyElement at position 5.
// <MyElement Index="6">
// MyElement at position 6.
// <MyElement Index="7">
// MyElement at position 7.
// <MyElement Index="8">
// MyElement at position 8.
// <MyElement Index="9">
// MyElement at position 9.
// Preparing to move the file to
// C:\Documents and Settings\MYComputer\My Documents\FileInfoTestDirectory\DestFile.xml.
// File moved to
// C:\Documents and Settings\MYComputer\My Documents\FileInfoTestDirectory\DestFile.xml
// The FileInfo instance shows these property values.
// FullName: C:\Documents and Settings\MYComputer\My Documents\FileInfoTestDirectory\DestFile.xml
// CreationTime: 4/18/2006 1:24:19 PM
// LastWriteTime: 4/18/2006 1:24:19 PM
//
// File contents:
//
// <?xml version="1.0" standalone="yes"?>
// <MyElement Index="0">
// MyElement at position 0.
// <MyElement Index="1">
// MyElement at position 1.
// <MyElement Index="2">
// MyElement at position 2.
// <MyElement Index="3">
// MyElement at position 3.
// <MyElement Index="4">
// MyElement at position 4.
// <MyElement Index="5">
// MyElement at position 5.
// <MyElement Index="6">
// MyElement at position 6.
// <MyElement Index="7">
// MyElement at position 7.
// <MyElement Index="8">
// MyElement at position 8.
// <MyElement Index="9">
// MyElement at position 9.
//
// Preparing to delete directories.
// Successfully deleted directories and files.
// Press the ENTER key to close this application.
Imports System.IO
Imports System.Text
Imports System.Text.RegularExpressions
Imports System.Xml
Module Program
Private sourcePath As String = Environment.GetFolderPath _
(Environment.SpecialFolder.MyDocuments) & _
"\FileInfoTestDirectory\MoveFrom\FromFile.xml"
'
Private destPath As String = Environment.GetFolderPath _
(Environment.SpecialFolder.MyDocuments) & _
"\FileInfoTestDirectory\DestFile.xml"
'
' The main entry point for the application.
'
<STAThread()> Sub Main()
' Change Console properties to make it obvious that
' the application is starting.
Console.Clear()
' Move it to the upper left corner of the screen.
Console.SetWindowPosition(0, 0)
' Make it very large.
Console.SetWindowSize(Console.LargestWindowWidth - 24, _
Console.LargestWindowHeight - 16)
Console.WriteLine("Welcome.")
Console.WriteLine("This application demonstrates the FileInfo.MoveTo method.")
Console.WriteLine("Press any key to start.")
Dim s As String = Console.ReadLine()
Console.Write(" Checking whether ")
Console.Write(sourcePath)
Console.WriteLine(" exists.")
Dim fInfo As FileInfo = New FileInfo(sourcePath)
EnsureSourceFileExists()
DisplayFileProperties(fInfo)
Console.WriteLine("Preparing to move the file to ")
Console.Write(destPath)
Console.WriteLine(".")
MoveFile(fInfo)
DisplayFileProperties(fInfo)
Console.WriteLine("Preparing to delete directories.")
DeleteFiles()
Console.WriteLine("Press the ENTER key to close this application.")
s = Console.ReadLine()
End Sub
'
' Moves the supplied FileInfo instance to destPath.
'
Private Sub MoveFile(ByVal fInfo As FileInfo)
Try
fInfo.MoveTo(destPath)
Console.WriteLine("File moved to ")
Console.WriteLine(destPath)
Catch ex As Exception
DisplayException(ex)
End Try
End Sub
'
' Ensures that the test directories
' and the file FromFile.xml all exist.
'
Private Sub EnsureSourceFileExists()
' Create a FileInfo instance, and get the full path
' to the parent directory.
Dim fInfo As FileInfo = New FileInfo(sourcePath)
Dim dirPath As String = fInfo.Directory.FullName
' If the directory does not exist, create it.
If Not Directory.Exists(dirPath) Then
Directory.CreateDirectory(dirPath)
End If
' If DestFile.xml exists, delete it.
If File.Exists(destPath) Then
File.Delete(destPath)
End If
Console.Write("Creating file ")
Console.Write(fInfo.FullName)
Console.WriteLine(".")
Try
If Not fInfo.Exists Then
' Call WriteFileContent to create the file.
Console.WriteLine("Adding data to the file.")
WriteFileContent(10)
Console.WriteLine("Successfully created the file.")
End If
Catch ex As Exception
DisplayException(ex)
Finally
dirPath = Nothing
fInfo = Nothing
End Try
End Sub
'
' Creates and saves an Xml file to sourcePath.
'
Private Sub WriteFileContent(ByVal totalElements As Integer)
Dim doc As New XmlDocument()
doc.PreserveWhitespace = True
doc.AppendChild(doc.CreateXmlDeclaration("1.0", Nothing, "yes"))
doc.AppendChild(doc.CreateWhitespace(ControlChars.CrLf))
Dim root As XmlElement = doc.CreateElement("FileInfo.MoveTo")
Dim index As Integer = 0
Dim elem As XmlElement
While index < totalElements
elem = doc.CreateElement("MyElement")
elem.SetAttribute("Index", index.ToString())
elem.AppendChild(doc.CreateWhitespace(ControlChars.CrLf))
elem.AppendChild(doc.CreateTextNode(String.Format _
("MyElement at position {0}.", index)))
elem.AppendChild(doc.CreateWhitespace(ControlChars.CrLf))
root.AppendChild(elem)
index += 1
End While
doc.AppendChild(root)
doc.AppendChild(doc.CreateWhitespace(ControlChars.CrLf))
doc.Save(sourcePath)
End Sub
'
' Displays FullName, CreationTime, and LastWriteTime of the supplied
' FileInfo instance, then displays the text of the file.
'
Private Sub DisplayFileProperties(ByVal fInfo As FileInfo)
Console.WriteLine("The FileInfo instance shows these property values.")
Dim reader As StreamReader = Nothing
Try
Console.Write("FullName: ")
Console.WriteLine(fInfo.FullName)
Console.Write("CreationTime: ")
Console.WriteLine(fInfo.CreationTime)
Console.Write("LastWriteTime: ")
Console.WriteLine(fInfo.LastWriteTime)
Console.WriteLine()
Console.WriteLine("File contents:")
Console.WriteLine()
reader = New StreamReader(fInfo.FullName)
While Not reader.EndOfStream
Console.WriteLine(reader.ReadLine())
End While
Console.WriteLine()
Catch ex As Exception
DisplayException(ex)
Finally
If Not reader Is Nothing Then
reader.Close()
reader = Nothing
End If
End Try
End Sub
'
' Deletes the test directory and all its files and subdirectories.
'
Private Sub DeleteFiles()
Try
Dim dInfo As DirectoryInfo = New DirectoryInfo(Environment.GetFolderPath _
(Environment.SpecialFolder.MyDocuments) + "\FileInfoTestDirectory")
If dInfo.Exists Then
dInfo.Delete(True)
Console.WriteLine("Successfully deleted directories and files.")
End If
dInfo = Nothing
Catch ex As Exception
DisplayException(ex)
End Try
End Sub
'
' Displays information about the supplied Exception. This
' code is not suitable for production applications.
'
Private Sub DisplayException(ByVal ex As Exception)
Dim sb As New StringBuilder("An exception of type """)
sb.Append(ex.GetType().FullName)
sb.Append(""" has occurred.")
sb.Append(ControlChars.CrLf)
sb.Append(ex.Message)
sb.Append(ControlChars.CrLf)
sb.Append("Stack trace information:")
sb.Append(ControlChars.CrLf)
Dim matchCol As MatchCollection = Regex.Matches(ex.StackTrace, _
"(at\s)(.+)(\.)([^\.]*)(\()([^\)]*)(\))((\sin\s)(.+)(:line )([\d]*))?")
Dim L As Integer = matchCol.Count
Dim y, K As Integer
Dim argList() As String
Dim matchObj As Match
Dim x As Integer = 0
While x < L
matchObj = matchCol(x)
sb.Append(ControlChars.CrLf)
sb.Append(ControlChars.CrLf)
sb.Append(matchObj.Result("$1 $2$3$4$5"))
argList = matchObj.Groups(6).Value.Split(New Char() {","})
K = argList.Length
y = 0
While y < K
sb.Append(ControlChars.CrLf)
sb.Append(" ")
sb.Append(argList(y).Trim().Replace(" ", " "))
sb.Append(",")
y += 1
End While
sb.Remove(sb.Length - 1, 1)
sb.Append(ControlChars.CrLf)
If 0 < matchObj.Groups(8).Length Then
sb.Append(ControlChars.CrLf)
sb.Append(matchObj.Result("$10"))
sb.Append(ControlChars.CrLf)
sb.Append(matchObj.Result("line $12"))
End If
x += 1
End While
argList = Nothing
matchObj = Nothing
matchCol = Nothing
Console.WriteLine(sb.ToString())
sb = Nothing
Return
End Sub
End Module
' Welcome.
' This application demonstrates the FileInfo.MoveTo method.
' Press any key to start.
'
' Checking whether C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml exists.
' Creating file C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml.
' Adding data to the file.
' Successfully created the file.
' The FileInfo instance shows these property values.
' FullName: C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\MoveFrom\FromFile.xml
' CreationTime: 4/18/2006 1:38:19 PM
' LastWriteTime: 4/18/2006 1:38:19 PM
'
' File contents:
'
' <?xml version="1.0" standalone="yes"?>
' <FileInfo.MoveTo><MyElement Index="0">
' MyElement at position 0.
' </MyElement><MyElement Index="1">
' MyElement at position 1.
' </MyElement><MyElement Index="2">
' MyElement at position 2.
' </MyElement><MyElement Index="3">
' MyElement at position 3.
' </MyElement><MyElement Index="4">
' MyElement at position 4.
' </MyElement><MyElement Index="5">
' MyElement at position 5.
' </MyElement><MyElement Index="6">
' MyElement at position 6.
' </MyElement><MyElement Index="7">
' MyElement at position 7.
' </MyElement><MyElement Index="8">
' MyElement at position 8.
' </MyElement><MyElement Index="9">
' MyElement at position 9.
' </MyElement></FileInfo.MoveTo>
'
' Preparing to move the file to
' C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\DestFile.xml.
' File moved to
' C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\DestFile.xml
' The FileInfo instance shows these property values.
' FullName: C:\Documents and Settings\MyComputer\My Documents\FileInfoTestDirectory\DestFile.xml
' CreationTime: 4/18/2006 1:38:19 PM
' LastWriteTime: 4/18/2006 1:38:19 PM
'
' File contents:
'
' <?xml version="1.0" standalone="yes"?>
' <FileInfo.MoveTo><MyElement Index="0">
' MyElement at position 0.
' </MyElement><MyElement Index="1">
' MyElement at position 1.
' </MyElement><MyElement Index="2">
' MyElement at position 2.
' </MyElement><MyElement Index="3">
' MyElement at position 3.
' </MyElement><MyElement Index="4">
' MyElement at position 4.
' </MyElement><MyElement Index="5">
' MyElement at position 5.
' </MyElement><MyElement Index="6">
' MyElement at position 6.
' </MyElement><MyElement Index="7">
' MyElement at position 7.
' </MyElement><MyElement Index="8">
' MyElement at position 8.
' </MyElement><MyElement Index="9">
' MyElement at position 9.
' </MyElement></FileInfo.MoveTo>
'
' Preparing to delete directories.
' Successfully deleted directories and files.
' Press the ENTER key to close this application.
Uwagi
Ta metoda działa na woluminach dysków. Na przykład c:\MyFile.txt pliku można przenieść do d:\public i zmienić nazwę NewFile.txt.
Zobacz też
- We/wy plików i Stream
- Instrukcje: Odczytywanie tekstu z pliku
- Instrukcje: Zapisywanie tekstu w pliku
Dotyczy
Współpracuj z nami w serwisie GitHub
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