Bagikan melalui

FileInfo.Replace Metode

  • Referensi

Definisi

Ruang nama:
System.IO
Rakitan:
System.IO.FileSystem.dll
Rakitan:
System.Runtime.dll
Rakitan:
mscorlib.dll
Rakitan:
netstandard.dll

Mengganti konten file tertentu dengan file yang dijelaskan oleh objek FileInfo saat ini, menghapus file asli dan membuat cadangan file yang diganti.

Overload

Replace(String, String)

Mengganti konten file tertentu dengan file yang dijelaskan oleh objek FileInfo saat ini, menghapus file asli dan membuat cadangan file yang diganti.
Replace(String, String, Boolean)

Mengganti konten file tertentu dengan file yang dijelaskan oleh objek FileInfo saat ini, menghapus file asli, dan membuat cadangan file yang diganti. Juga menentukan apakah akan mengabaikan kesalahan penggabungan.

Keterangan

Gunakan metode Replace saat Anda perlu mengganti file dengan cepat dengan konten file yang dijelaskan oleh objek FileInfo saat ini.

Replace(String, String)

Sumber:
FileInfo.cs
Sumber:
FileInfo.cs
Sumber:
FileInfo.cs

Mengganti konten file tertentu dengan file yang dijelaskan oleh objek FileInfo saat ini, menghapus file asli dan membuat cadangan file yang diganti.

public:
 System::IO::FileInfo ^ Replace(System::String ^ destinationFileName, System::String ^ destinationBackupFileName);
public System.IO.FileInfo Replace (string destinationFileName, string? destinationBackupFileName);
public System.IO.FileInfo Replace (string destinationFileName, string destinationBackupFileName);
[System.Runtime.InteropServices.ComVisible(false)]
public System.IO.FileInfo Replace (string destinationFileName, string destinationBackupFileName);
member this.Replace : string * string -> System.IO.FileInfo
[<System.Runtime.InteropServices.ComVisible(false)>]
member this.Replace : string * string -> System.IO.FileInfo
Public Function Replace (destinationFileName As String, destinationBackupFileName As String) As FileInfo

Parameter

destinationFileName
String

Nama file yang akan diganti dengan file saat ini.

destinationBackupFileName
String

Nama file untuk membuat cadangan file yang dijelaskan oleh parameter destinationFileName.

Mengembalikan

FileInfo

Objek FileInfo yang merangkum informasi tentang file yang dijelaskan oleh parameter destinationFileName.

Atribut
ComVisibleAttribute

Pengecualian

ArgumentException

Jalur yang dijelaskan oleh parameter destinationFileName bukan dari bentuk hukum.

-atau-

Jalur yang dijelaskan oleh parameter destinationBackupFileName bukan dari bentuk hukum.

ArgumentNullException

Parameter destinationFileNamenull.

FileNotFoundException

File yang dijelaskan oleh objek FileInfo saat ini tidak dapat ditemukan.

-atau-

File yang dijelaskan oleh parameter destinationFileName tidak dapat ditemukan.

PlatformNotSupportedException

Sistem operasi saat ini bukan Microsoft Windows NT atau yang lebih baru.

Contoh

Contoh berikut menggunakan metode Replace untuk mengganti file dengan file lain dan membuat cadangan file yang diganti.


using namespace System;
using namespace System::IO;


// Move a file into another file, delete the original,
// and create a backup of the replaced file.
void ReplaceFile(String^ fileToMoveAndDelete,
                 String^ fileToReplace, String^ backupOfFileToReplace)
{
    // Create a new FileInfo object.
    FileInfo^ fInfo = gcnew FileInfo(fileToMoveAndDelete);

    // replace the file.
    fInfo->Replace(fileToReplace, backupOfFileToReplace, false);
}


int main()
{
    try
    {
        // originalFile and fileToReplace must contain 
        // the path to files that already exist in the  
        // file system. backUpOfFileToReplace is created 
        // during the execution of the Replace method.

        String^ originalFile = "test.xml";
        String^ fileToReplace = "test2.xml";
        String^ backUpOfFileToReplace = "test2.xml.bak";

        if (File::Exists(originalFile) && (File::Exists(fileToReplace)))
        {
            Console::WriteLine("Move the contents of {0} into {1}, " +
                "delete {0}, and create a backup of {1}",
                originalFile, fileToReplace);

            // Replace the file.
            ReplaceFile(originalFile, fileToReplace,
                backUpOfFileToReplace);
            Console::WriteLine("Done");
        }
        else
        {
            Console::WriteLine("Either the file {0} or {1} doesn't " +
                "exist.", originalFile, fileToReplace);
        }
    }
    catch (IOException^ ex)
    {
        Console::WriteLine(ex->Message);
    }
}


//This code produces output similar to the following; 
//results may vary based on the computer/file structure/etc.:
//
//Move the contents of c:\test1.xml into c:\test2.xml, delete c:\test1.xml, 
//and create a backup of c:\test2.xml
//Done

using System;
using System.IO;

namespace FileSystemExample
{
    class FileExample
    {
        public static void Main()
        {
            try
            {
                // originalFile and fileToReplace must contain the path to files that already exist in the
                // file system. backUpOfFileToReplace is created during the execution of the Replace method.

                string originalFile  = "test.txt";
                string fileToReplace = "test2.txt";
                string backUpOfFileToReplace = "test2.txt.bak";

                if (File.Exists(originalFile) && (File.Exists(fileToReplace)))
                {
                    Console.WriteLine("Move the contents of " + originalFile + " into " + fileToReplace + ", delete "
                        + originalFile + ", and create a backup of " + fileToReplace + ".");

                    // Replace the file.
                    ReplaceFile(originalFile, fileToReplace, backUpOfFileToReplace);

                    Console.WriteLine("Done");
                }
                else
                {
                    Console.WriteLine("Either the file {0} or {1} doesn't " + "exist.", originalFile, fileToReplace);
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }

            Console.ReadLine();
        }

        // Move a file into another file, delete the original, and create a backup of the replaced file.
        public static void ReplaceFile(string fileToMoveAndDelete, string fileToReplace, string backupOfFileToReplace)
        {
            // Create a new FileInfo object.
            FileInfo fInfo = new FileInfo(fileToMoveAndDelete);

            // replace the file.
            fInfo.Replace(fileToReplace, backupOfFileToReplace, false);
        }
    }
}
//Move the contents of test.txt into test2.txt, delete test.txt, and
//create a backup of test2.txt.
//Done

Imports System.IO

Module FileExample

    Sub Main()
        Try
            ' originalFile and fileToReplace must contain the path to files that already exist in the  
            ' file system. backUpOfFileToReplace is created during the execution of the Replace method.

            Dim originalFile As String = "test.xml"
            Dim fileToReplace As String = "test2.xml"
            Dim backUpOfFileToReplace As String = "test2.xml.bak"

            If (File.Exists(originalFile) And (File.Exists(fileToReplace))) Then
                Console.WriteLine("Move the contents of " + originalFile + " into " + fileToReplace + ", delete " + originalFile + ", and create a backup of " + fileToReplace + ".")

                ' Replace the file.
                ReplaceFile(originalFile, fileToReplace, backUpOfFileToReplace)

                Console.WriteLine("Done")

            Else
                Console.WriteLine("Either the file {0} or {1} doesn't " + "exist.", originalFile, fileToReplace)
            End If
        Catch e As Exception
            Console.WriteLine(e.Message)
        End Try

        Console.ReadLine()

    End Sub

    ' Move a file into another file, delete the original, and create a backup of the replaced file.
    Sub ReplaceFile(ByVal fileToMoveAndDelete As String, ByVal fileToReplace As String, ByVal backupOfFileToReplace As String)
        ' Create a new FileInfo object.
        Dim fInfo As New FileInfo(fileToMoveAndDelete)

        ' Replace the file.
        fInfo.Replace(fileToReplace, backupOfFileToReplace, False)

    End Sub
End Module

' Move the contents of test.txt into test2.txt, delete test.txt, and 
' create a backup of test2.txt.
' Done

Keterangan

Metode Replace menggantikan konten file tertentu dengan konten file yang dijelaskan oleh objek FileInfo saat ini. Ini juga membuat cadangan file yang diganti. Terakhir, ini mengembalikan objek FileInfo baru yang menjelaskan file yang ditimpa.

Teruskan null ke parameter destinationBackupFileName jika Anda tidak ingin membuat cadangan file yang diganti.

Berlaku untuk

Replace(String, String, Boolean)

Sumber:
FileInfo.cs
Sumber:
FileInfo.cs
Sumber:
FileInfo.cs

Mengganti konten file tertentu dengan file yang dijelaskan oleh objek FileInfo saat ini, menghapus file asli, dan membuat cadangan file yang diganti. Juga menentukan apakah akan mengabaikan kesalahan penggabungan.

public:
 System::IO::FileInfo ^ Replace(System::String ^ destinationFileName, System::String ^ destinationBackupFileName, bool ignoreMetadataErrors);
public System.IO.FileInfo Replace (string destinationFileName, string? destinationBackupFileName, bool ignoreMetadataErrors);
public System.IO.FileInfo Replace (string destinationFileName, string destinationBackupFileName, bool ignoreMetadataErrors);
[System.Runtime.InteropServices.ComVisible(false)]
public System.IO.FileInfo Replace (string destinationFileName, string destinationBackupFileName, bool ignoreMetadataErrors);
member this.Replace : string * string * bool -> System.IO.FileInfo
[<System.Runtime.InteropServices.ComVisible(false)>]
member this.Replace : string * string * bool -> System.IO.FileInfo
Public Function Replace (destinationFileName As String, destinationBackupFileName As String, ignoreMetadataErrors As Boolean) As FileInfo

Parameter

destinationFileName
String

Nama file yang akan diganti dengan file saat ini.

destinationBackupFileName
String

Nama file untuk membuat cadangan file yang dijelaskan oleh parameter destinationFileName.

ignoreMetadataErrors
Boolean

true untuk mengabaikan kesalahan penggabungan (seperti atribut dan ACL) dari file yang diganti ke file pengganti; jika tidak, false.

Mengembalikan

FileInfo

Objek FileInfo yang merangkum informasi tentang file yang dijelaskan oleh parameter destinationFileName.

Atribut
ComVisibleAttribute

Pengecualian

ArgumentException

Jalur yang dijelaskan oleh parameter destinationFileName bukan dari bentuk hukum.

-atau-

Jalur yang dijelaskan oleh parameter destinationBackupFileName bukan dari bentuk hukum.

ArgumentNullException

Parameter destinationFileNamenull.

FileNotFoundException

File yang dijelaskan oleh objek FileInfo saat ini tidak dapat ditemukan.

-atau-

File yang dijelaskan oleh parameter destinationFileName tidak dapat ditemukan.

PlatformNotSupportedException

Sistem operasi saat ini bukan Microsoft Windows NT atau yang lebih baru.

Contoh

Contoh berikut menggunakan metode Replace untuk mengganti file dengan file lain dan membuat cadangan file yang diganti.


using namespace System;
using namespace System::IO;


// Move a file into another file, delete the original,
// and create a backup of the replaced file.
void ReplaceFile(String^ fileToMoveAndDelete,
                 String^ fileToReplace, String^ backupOfFileToReplace)
{
    // Create a new FileInfo object.
    FileInfo^ fInfo = gcnew FileInfo(fileToMoveAndDelete);

    // replace the file.
    fInfo->Replace(fileToReplace, backupOfFileToReplace, false);
}


int main()
{
    try
    {
        // originalFile and fileToReplace must contain 
        // the path to files that already exist in the  
        // file system. backUpOfFileToReplace is created 
        // during the execution of the Replace method.

        String^ originalFile = "test.xml";
        String^ fileToReplace = "test2.xml";
        String^ backUpOfFileToReplace = "test2.xml.bak";

        if (File::Exists(originalFile) && (File::Exists(fileToReplace)))
        {
            Console::WriteLine("Move the contents of {0} into {1}, " +
                "delete {0}, and create a backup of {1}",
                originalFile, fileToReplace);

            // Replace the file.
            ReplaceFile(originalFile, fileToReplace,
                backUpOfFileToReplace);
            Console::WriteLine("Done");
        }
        else
        {
            Console::WriteLine("Either the file {0} or {1} doesn't " +
                "exist.", originalFile, fileToReplace);
        }
    }
    catch (IOException^ ex)
    {
        Console::WriteLine(ex->Message);
    }
}


//This code produces output similar to the following; 
//results may vary based on the computer/file structure/etc.:
//
//Move the contents of c:\test1.xml into c:\test2.xml, delete c:\test1.xml, 
//and create a backup of c:\test2.xml
//Done

using System;
using System.IO;

namespace FileSystemExample
{
    class FileExample
    {
        public static void Main()
        {
            try
            {
                // originalFile and fileToReplace must contain the path to files that already exist in the
                // file system. backUpOfFileToReplace is created during the execution of the Replace method.

                string originalFile  = "test.txt";
                string fileToReplace = "test2.txt";
                string backUpOfFileToReplace = "test2.txt.bak";

                if (File.Exists(originalFile) && (File.Exists(fileToReplace)))
                {
                    Console.WriteLine("Move the contents of " + originalFile + " into " + fileToReplace + ", delete "
                        + originalFile + ", and create a backup of " + fileToReplace + ".");

                    // Replace the file.
                    ReplaceFile(originalFile, fileToReplace, backUpOfFileToReplace);

                    Console.WriteLine("Done");
                }
                else
                {
                    Console.WriteLine("Either the file {0} or {1} doesn't " + "exist.", originalFile, fileToReplace);
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }

            Console.ReadLine();
        }

        // Move a file into another file, delete the original, and create a backup of the replaced file.
        public static void ReplaceFile(string fileToMoveAndDelete, string fileToReplace, string backupOfFileToReplace)
        {
            // Create a new FileInfo object.
            FileInfo fInfo = new FileInfo(fileToMoveAndDelete);

            // replace the file.
            fInfo.Replace(fileToReplace, backupOfFileToReplace, false);
        }
    }
}
//Move the contents of test.txt into test2.txt, delete test.txt, and
//create a backup of test2.txt.
//Done

Imports System.IO

Module FileExample

    Sub Main()
        Try
            ' originalFile and fileToReplace must contain the path to files that already exist in the  
            ' file system. backUpOfFileToReplace is created during the execution of the Replace method.

            Dim originalFile As String = "test.xml"
            Dim fileToReplace As String = "test2.xml"
            Dim backUpOfFileToReplace As String = "test2.xml.bak"

            If (File.Exists(originalFile) And (File.Exists(fileToReplace))) Then
                Console.WriteLine("Move the contents of " + originalFile + " into " + fileToReplace + ", delete " + originalFile + ", and create a backup of " + fileToReplace + ".")

                ' Replace the file.
                ReplaceFile(originalFile, fileToReplace, backUpOfFileToReplace)

                Console.WriteLine("Done")

            Else
                Console.WriteLine("Either the file {0} or {1} doesn't " + "exist.", originalFile, fileToReplace)
            End If
        Catch e As Exception
            Console.WriteLine(e.Message)
        End Try

        Console.ReadLine()

    End Sub

    ' Move a file into another file, delete the original, and create a backup of the replaced file.
    Sub ReplaceFile(ByVal fileToMoveAndDelete As String, ByVal fileToReplace As String, ByVal backupOfFileToReplace As String)
        ' Create a new FileInfo object.
        Dim fInfo As New FileInfo(fileToMoveAndDelete)

        ' Replace the file.
        fInfo.Replace(fileToReplace, backupOfFileToReplace, False)

    End Sub
End Module

' Move the contents of test.txt into test2.txt, delete test.txt, and 
' create a backup of test2.txt.
' Done

Keterangan

Metode Replace menggantikan konten file tertentu dengan konten file yang dijelaskan oleh objek FileInfo saat ini. Ini juga membuat cadangan file yang diganti. Terakhir, ini mengembalikan objek FileInfo baru yang menjelaskan file yang ditimpa.

Teruskan null ke parameter destinationBackupFileName jika Anda tidak ingin membuat cadangan file yang diganti.

Berlaku untuk