FileInfo.MoveTo Метод

Определение

Перегрузки

MoveTo(String)

Перемещает заданный файл в новое местоположение и разрешает переименование файла.Moves a specified file to a new location, providing the option to specify a new file name.

MoveTo(String, Boolean)

Перемещает указанный файл в новое расположение, предоставляя параметры для указания нового имени файла и перезаписи конечного файла, если он уже существует.Moves a specified file to a new location, providing the options to specify a new file name and to overwrite the destination file if it already exists.

MoveTo(String)

Перемещает заданный файл в новое местоположение и разрешает переименование файла.Moves a specified file to a new location, providing the option to specify a new file name.

public:
 void MoveTo(System::String ^ destFileName);
public void MoveTo (string destFileName);
member this.MoveTo : string -> unit
Public Sub MoveTo (destFileName As String)

Параметры

destFileName
String

Путь, указывающий на местоположение, в которое необходимо переместить файл; в этом же пути можно задать и другое имя файла.The path to move the file to, which can specify a different file name.

Исключения

Ошибка ввода-вывода, например, конечный файл уже существует или устройство назначения не готово.An I/O error occurs, such as the destination file already exists or the destination device is not ready.

Свойство destFileName имеет значение null.destFileName is null.

destFileName является пустой строкой, содержит только пробелы или недопустимые символы.destFileName is empty, contains only white spaces, or contains invalid characters.

У вызывающего объекта отсутствует необходимое разрешение.The caller does not have the required permission.

destFileName доступен только для чтения или является каталогом.destFileName is read-only or is a directory.

Файл не найден.The file is not found.

Указан недопустимый путь (например, он ведет на несопоставленный диск).The specified path is invalid, such as being on an unmapped drive.

Указанный путь, имя файла или оба значения превышают максимальную длину, заданную в системе.The specified path, file name, or both exceed the system-defined maximum length.

destFileName содержит двоеточие (:) в середине строки.destFileName contains a colon (:) in the middle of the string.

Примеры

В следующем примере показано перемещение файла в другое расположение и переименование файла.The following example demonstrates moving a file to a different location and renaming the file.


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.

Комментарии

Этот метод работает на дисковых томах.This method works across disk volumes. Например, файл c:\MyFile.txt можно переместить в д:\публик и переименовать NewFile. txt.For example, the file c:\MyFile.txt can be moved to d:\public and renamed NewFile.txt.

Этот метод не перезаписывает файл назначения, если он уже существует.This method does not overwrite the destination file if it already exists. Для этой цели вызовите MoveTo(String, Boolean) вместо этого.For that purpose, call MoveTo(String, Boolean) instead.

Безопасность

FileIOPermission
для чтения и записи файлов.for reading and writing files. Связанные перечисления: Read,WriteAssociated enumerations: Read, Write

Дополнительно

MoveTo(String, Boolean)

Перемещает указанный файл в новое расположение, предоставляя параметры для указания нового имени файла и перезаписи конечного файла, если он уже существует.Moves a specified file to a new location, providing the options to specify a new file name and to overwrite the destination file if it already exists.

public:
 void MoveTo(System::String ^ destFileName, bool overwrite);
public void MoveTo (string destFileName, bool overwrite);
member this.MoveTo : string * bool -> unit
Public Sub MoveTo (destFileName As String, overwrite As Boolean)

Параметры

destFileName
String

Путь, указывающий на местоположение, в которое необходимо переместить файл; в этом же пути можно задать и другое имя файла.The path to move the file to, which can specify a different file name.

overwrite
Boolean

true для перезаписи конечного файла, если он уже существует; в противном случае — false.true to overwrite the destination file if it already exists; false otherwise.

Исключения

Произошла ошибка ввода-вывода, например целевое устройство не готово.An I/O error occurred, such as the destination device is not ready.

Свойство destFileName имеет значение null.destFileName is null.

destFileName является пустой строкой, содержит только пробелы или недопустимые символы.destFileName is empty, contains only white spaces, or contains invalid characters.

У вызывающего объекта отсутствует необходимое разрешение.The caller does not have the required permission.

destFileName доступен только для чтения или является каталогом.destFileName is read-only or is a directory.

Файл не найден.The file is not found.

Указан недопустимый путь (например, он ведет на несопоставленный диск).The specified path is invalid, such as being on an unmapped drive.

Указанный путь, имя файла или оба значения превышают максимальную длину, заданную в системе.The specified path, file name, or both exceed the system-defined maximum length.

destFileName содержит двоеточие (:) в середине строки.destFileName contains a colon (:) in the middle of the string.

Примеры

В следующем примере показано перемещение файла в другое расположение и переименование файла.The following example demonstrates moving a file to a different location and renaming the file.


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.

Комментарии

Этот метод работает на дисковых томах.This method works across disk volumes. Например, файл c:\MyFile.txt можно переместить в д:\публик и переименовать NewFile. txt.For example, the file c:\MyFile.txt can be moved to d:\public and renamed NewFile.txt.

Безопасность

FileIOPermission
для чтения и записи файлов.for reading and writing files. Связанные перечисления: Read,WriteAssociated enumerations: Read, Write

Дополнительно

Применяется к