FileInfo.Replace 方法

參考

定義

命名空間:: System.IO

組件:: System.IO.FileSystem.dll

組件:: System.Runtime.dll

組件:: mscorlib.dll

組件:: netstandard.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

將指定檔案的內容取代為目前 FileInfo 物件所描述的檔案、刪除源檔，以及建立已取代檔案的備份。

多載

Replace(String, String)	將指定檔案的內容取代為目前 FileInfo 物件所描述的檔案、刪除源檔，以及建立已取代檔案的備份。
Replace(String, String, Boolean)	將指定檔案的內容取代為目前 FileInfo 物件所描述的檔案、刪除源檔，以及建立已取代檔案的備份。也指定是否忽略合併錯誤。

備註

當您需要以目前 FileInfo 物件所描述的檔案內容快速取代檔案時，請使用 Replace 方法。

Replace(String, String)

來源:: FileInfo.cs

來源:: FileInfo.cs

來源:: FileInfo.cs

將指定檔案的內容取代為目前 FileInfo 物件所描述的檔案、刪除源檔，以及建立已取代檔案的備份。

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

參數

destinationFileName: String

要取代為目前檔案的檔名。

destinationBackupFileName: String

用來建立 destinationFileName 參數所描述之檔案備份的檔名。

傳回

FileInfo

FileInfo 物件，封裝 destinationFileName 參數所描述之檔案的相關信息。

屬性: ComVisibleAttribute

例外狀況

ArgumentException

destinationFileName 參數所描述的路徑不是合法的形式。

-或-

destinationBackupFileName 參數所描述的路徑不是合法的形式。

ArgumentNullException

destinationFileName 參數是 null。

FileNotFoundException

找不到目前 FileInfo 物件所描述的檔案。

-或-

找不到 destinationFileName 參數所描述的檔案。

PlatformNotSupportedException

目前的操作系統不是Microsoft Windows NT 或更新版本。

範例

下列範例使用 Replace 方法，將檔案取代為另一個檔案，並建立已取代檔案的備份。


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

備註

Replace 方法會將指定檔案的內容取代為目前 FileInfo 物件所描述的檔案內容。它也會建立已取代之檔案的備份。最後，它會傳回描述覆寫檔案的新 FileInfo 物件。

如果您不想建立要取代之檔案的備份，請將 null 傳遞至 destinationBackupFileName 參數。

適用於

Replace(String, String, Boolean)

來源:: FileInfo.cs

來源:: FileInfo.cs

來源:: FileInfo.cs

將指定檔案的內容取代為目前 FileInfo 物件所描述的檔案、刪除源檔，以及建立已取代檔案的備份。也指定是否忽略合併錯誤。

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

參數

destinationFileName: String

要取代為目前檔案的檔名。

destinationBackupFileName: String

用來建立 destinationFileName 參數所描述之檔案備份的檔名。

ignoreMetadataErrors: Boolean

true 忽略從已取代檔案到取代檔案的合併錯誤（例如屬性和 ACL） ;否則 false。

傳回

FileInfo

FileInfo 物件，封裝 destinationFileName 參數所描述之檔案的相關信息。

屬性: ComVisibleAttribute

例外狀況

ArgumentException

destinationFileName 參數所描述的路徑不是合法的形式。

-或-

destinationBackupFileName 參數所描述的路徑不是合法的形式。

ArgumentNullException

destinationFileName 參數是 null。

FileNotFoundException

找不到目前 FileInfo 物件所描述的檔案。

-或-

找不到 destinationFileName 參數所描述的檔案。

PlatformNotSupportedException

目前的操作系統不是Microsoft Windows NT 或更新版本。

範例

下列範例使用 Replace 方法，將檔案取代為另一個檔案，並建立已取代檔案的備份。


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

備註

如果您不想建立要取代之檔案的備份，請將 null 傳遞至 destinationBackupFileName 參數。

適用於

共用方式為

FileInfo.Replace 方法

定義

多載

備註

Replace(String, String)

參數

傳回

例外狀況

範例

備註

適用於

Replace(String, String, Boolean)

參數

傳回

例外狀況

範例

備註

適用於

其他資源