WebClient.UploadFile 方法

定義

將本機檔案上載至具有指定之 URI 的資源。Uploads a local file to a resource with the specified URI.

多載

UploadFile(String, String)

將指定的本機檔案上載至具有指定之 URI 的資源。Uploads the specified local file to a resource with the specified URI.

UploadFile(Uri, String)

將指定的本機檔案上載至具有指定之 URI 的資源。Uploads the specified local file to a resource with the specified URI.

UploadFile(String, String, String)

使用指定的方法,將指定的本機檔案上載至指定的資源。Uploads the specified local file to the specified resource, using the specified method.

UploadFile(Uri, String, String)

使用指定的方法,將指定的本機檔案上載至指定的資源。Uploads the specified local file to the specified resource, using the specified method.

UploadFile(String, String)

將指定的本機檔案上載至具有指定之 URI 的資源。Uploads the specified local file to a resource with the specified URI.

public:
 cli::array <System::Byte> ^ UploadFile(System::String ^ address, System::String ^ fileName);
public byte[] UploadFile (string address, string fileName);
member this.UploadFile : string * string -> byte[]
Public Function UploadFile (address As String, fileName As String) As Byte()

參數

address
String

要接收檔案之資源的 URI。The URI of the resource to receive the file. 例如 ftp://localhost/samplefile.txt.For example, ftp://localhost/samplefile.txt.

fileName
String

要傳送至資源的檔案。The file to send to the resource. 例如,"samplefile.txt"。For example, "samplefile.txt".

傳回

Byte[]

Byte 陣列,包含來自資源的回應主體。A Byte array containing the body of the response from the resource.

例外狀況

address 參數是 nullThe address parameter is null. -或--or- fileName 參數是 nullThe fileName parameter is null.

合併 BaseAddressaddress 而形成的 URI 是無效的。The URI formed by combining BaseAddress, and address is invalid.

-或--or- fileNamenullEmpty,表示其中包含無效的字元,或其不存在。fileName is null, is Empty, contains invalid characters, or does not exist.

-或--or- 上載檔案時發生錯誤。An error occurred while uploading the file.

-或--or- 沒有來自裝載 (Host) 資源之伺服器的回應。There was no response from the server hosting the resource.

-或--or- Content-type 開頭的 multipart 頁首。The Content-type header begins with multipart.

範例

下列程式碼範例會使用 UploadFile,將指定的檔案上傳至指定的 URI。The following code example uploads the specified file to the specified URI using UploadFile. 伺服器傳回的任何回應都會顯示在主控台上。Any response returned by the server is displayed on the console.

Console::Write( "\nPlease enter the URI to post data to : " );
String^ uriString = Console::ReadLine();

// Create a new WebClient instance.
WebClient^ myWebClient = gcnew WebClient;
Console::WriteLine( "\nPlease enter the fully qualified path of the file to be uploaded to the URI" );
String^ fileName = Console::ReadLine();
Console::WriteLine( "Uploading {0} to {1} ...", fileName, uriString );

// Upload the file to the URI.
// The 'UploadFile(uriString, fileName)' method implicitly uses HTTP POST method.
array<Byte>^responseArray = myWebClient->UploadFile( uriString, fileName );

// Decode and display the response.
Console::WriteLine( "\nResponse Received::The contents of the file uploaded are: \n {0}", 
    System::Text::Encoding::ASCII->GetString( responseArray ) );
Console.Write("\nPlease enter the URI to post data to : ");
String uriString = Console.ReadLine();

// Create a new WebClient instance.
WebClient myWebClient = new WebClient();

Console.WriteLine("\nPlease enter the fully qualified path of the file to be uploaded to the URI");
string fileName = Console.ReadLine();
Console.WriteLine("Uploading {0} to {1} ...",fileName,uriString);

// Upload the file to the URI.
// The 'UploadFile(uriString,fileName)' method implicitly uses HTTP POST method.
byte[] responseArray = myWebClient.UploadFile(uriString,fileName);

// Decode and display the response.
Console.WriteLine("\nResponse Received. The contents of the file uploaded are:\n{0}", 
    System.Text.Encoding.ASCII.GetString(responseArray));

Console.Write(ControlChars.Cr + "Please enter the URI to post data to : ")
Dim uriString As String = Console.ReadLine()

' Create a new WebClient instance.
Dim myWebClient As New WebClient()

Console.WriteLine(ControlChars.Cr & _
    "Please enter the fully qualified path of the file to be uploaded to the URI")

Dim fileName As String = Console.ReadLine()
Console.WriteLine("Uploading {0} to {1} ...", fileName, uriString)

' Upload the file to the URI.
' The 'UploadFile(uriString,fileName)' method implicitly uses HTTP POST method. 
Dim responseArray As Byte() = myWebClient.UploadFile(uriString, fileName)

' Decode and display the response.
Console.WriteLine(ControlChars.Cr & "Response Received. The contents of the file uploaded are: " & _
    ControlChars.Cr & "{0}", System.Text.Encoding.ASCII.GetString(responseArray))

下列程式碼範例顯示可接受已張貼檔案且適用于 UploadFile 方法的 ASP.NET 網頁。The following code example shows an ASP.NET page that can accept posted files and is suitable for use with the UploadFile method. 網頁必須位於 Web 服務器上。The page must reside on a Web server. 其位址會提供 UploadFile 方法之 address 參數的值。Its address provides the value for the address parameter of the UploadFile method.

<%@ Import Namespace="System"%>
<%@ Import Namespace="System.IO"%>
<%@ Import Namespace="System.Net"%>
<%@ Import NameSpace="System.Web"%>

<Script language="C#" runat=server>
void Page_Load(object sender, EventArgs e) {
    
    foreach(string f in Request.Files.AllKeys) {
        HttpPostedFile file = Request.Files[f];
        file.SaveAs("c:\\inetpub\\test\\UploadedFiles\\" + file.FileName);
    }	
}

</Script>
<html>
<body>
<p> Upload complete.  </p>
</body>
</html>
<%@ Import Namespace="System"%>
<%@ Import Namespace="System.IO"%>
<%@ Import Namespace="System.Net"%>
<%@ Import NameSpace="System.Web"%>

<Script language="VB" runat=server>
    Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
        
        Dim f As String
        Dim file
        For Each f In Request.Files.AllKeys
            file = Request.Files(f)
            file.SaveAs("c:\inetpub\test\UploadedFiles\" & file.FileName)
        Next f
        
    End Sub

</Script>
<html>
<body>
<p> Upload complete. </p>
</body>
</html>

備註

UploadFile 方法會將本機檔案傳送至資源。The UploadFile method sends a local file to a resource. 這個方法會使用 STOR 命令來上傳 FTP 資源。This method uses the STOR command to upload an FTP resource. 若為 HTTP 資源,則會使用 POST 方法。For an HTTP resource, the POST method is used.

這個方法會在上傳檔案時封鎖。This method blocks while uploading the file. 若要在等候伺服器回應時繼續執行,請使用其中一種 UploadFileAsync 方法。To continue executing while waiting for the server's response, use one of the UploadFileAsync methods.

POST 方法是由 HTTP 所定義。The POST method is defined by HTTP. 如果基礎要求未使用 HTTP,而且伺服器無法辨識 POST,則基礎通訊協定類別會決定發生的狀況。If the underlying request does not use HTTP and POST is not understood by the server, the underlying protocol classes determine what occurs. 通常會擲回 WebException,並設定 Status 屬性來指出錯誤。Typically, a WebException is thrown with the Status property set to indicate the error.

如果 BaseAddress 屬性不是空字串(""),而且 address 不包含絕對 URI,address 必須是與 BaseAddress 結合的相對 URI,才能形成所要求資料的絕對 URI。If the BaseAddress property is not an empty string ("") and address does not contain an absolute URI, address must be a relative URI that is combined with BaseAddress to form the absolute URI of the requested data. 如果 QueryString 屬性不是空字串,則會將它附加至 addressIf the QueryString property is not an empty string, it is appended to address.

注意

在應用程式中啟用網路追蹤時,這個成員會輸出追蹤資訊。This member outputs trace information when you enable network tracing in your application. 如需詳細資訊,請參閱.NET Framework 中的網路追蹤For more information, see Network Tracing in .NET Framework.

UploadFile(Uri, String)

將指定的本機檔案上載至具有指定之 URI 的資源。Uploads the specified local file to a resource with the specified URI.

public:
 cli::array <System::Byte> ^ UploadFile(Uri ^ address, System::String ^ fileName);
public byte[] UploadFile (Uri address, string fileName);
member this.UploadFile : Uri * string -> byte[]
Public Function UploadFile (address As Uri, fileName As String) As Byte()

參數

address
Uri

要接收檔案之資源的 URI。The URI of the resource to receive the file. 例如 ftp://localhost/samplefile.txt.For example, ftp://localhost/samplefile.txt.

fileName
String

要傳送至資源的檔案。The file to send to the resource. 例如,"samplefile.txt"。For example, "samplefile.txt".

傳回

Byte[]

Byte 陣列,包含來自資源的回應主體。A Byte array containing the body of the response from the resource.

例外狀況

address 參數是 nullThe address parameter is null. -或--or- fileName 參數是 nullThe fileName parameter is null.

合併 BaseAddressaddress 而形成的 URI 是無效的。The URI formed by combining BaseAddress, and address is invalid.

-或--or- fileNamenullEmpty,表示其中包含無效的字元,或其不存在。fileName is null, is Empty, contains invalid characters, or does not exist.

-或--or- 上載檔案時發生錯誤。An error occurred while uploading the file.

-或--or- 沒有來自裝載 (Host) 資源之伺服器的回應。There was no response from the server hosting the resource.

-或--or- Content-type 開頭的 multipart 頁首。The Content-type header begins with multipart.

備註

UploadFile 方法會將本機檔案傳送至資源。The UploadFile method sends a local file to a resource. 這個方法會使用 STOR 命令來上傳 FTP 資源。This method uses the STOR command to upload an FTP resource. 若為 HTTP 資源,則會使用 POST 方法。For an HTTP resource, the POST method is used.

這個方法會在上傳檔案時封鎖。This method blocks while uploading the file. 若要在等候伺服器回應時繼續執行,請使用其中一種 UploadFileAsync 方法。To continue executing while waiting for the server's response, use one of the UploadFileAsync methods.

POST 方法是由 HTTP 所定義。The POST method is defined by HTTP. 如果基礎要求未使用 HTTP,而且伺服器無法辨識 POST,則基礎通訊協定類別會決定發生的狀況。If the underlying request does not use HTTP and POST is not understood by the server, the underlying protocol classes determine what occurs. 通常會擲回 WebException,並設定 Status 屬性來指出錯誤。Typically, a WebException is thrown with the Status property set to indicate the error.

如果 BaseAddress 屬性不是空字串(""),而且 address 不包含絕對 URI,address 必須是與 BaseAddress 結合的相對 URI,才能形成所要求資料的絕對 URI。If the BaseAddress property is not an empty string ("") and address does not contain an absolute URI, address must be a relative URI that is combined with BaseAddress to form the absolute URI of the requested data. 如果 QueryString 屬性不是空字串,則會將它附加至 addressIf the QueryString property is not an empty string, it is appended to address.

注意

在應用程式中啟用網路追蹤時,這個成員會輸出追蹤資訊。This member outputs trace information when you enable network tracing in your application. 如需詳細資訊,請參閱.NET Framework 中的網路追蹤For more information, see Network Tracing in .NET Framework.

UploadFile(String, String, String)

使用指定的方法,將指定的本機檔案上載至指定的資源。Uploads the specified local file to the specified resource, using the specified method.

public:
 cli::array <System::Byte> ^ UploadFile(System::String ^ address, System::String ^ method, System::String ^ fileName);
public byte[] UploadFile (string address, string method, string fileName);
member this.UploadFile : string * string * string -> byte[]
Public Function UploadFile (address As String, method As String, fileName As String) As Byte()

參數

address
String

要接收檔案之資源的 URI。The URI of the resource to receive the file.

method
String

傳送檔案給資源所使用的方法。The method used to send the file to the resource. 如果是 null,預設的 HTTP 為 POST,而 FTP 則為 STOR。If null, the default is POST for http and STOR for ftp.

fileName
String

要傳送至資源的檔案。The file to send to the resource.

傳回

Byte[]

Byte 陣列,包含來自資源的回應主體。A Byte array containing the body of the response from the resource.

例外狀況

address 參數是 nullThe address parameter is null. -或--or- fileName 參數是 nullThe fileName parameter is null.

合併 BaseAddressaddress 而形成的 URI 是無效的。The URI formed by combining BaseAddress, and address is invalid.

-或--or- fileNamenullEmpty,表示其中包含無效的字元,或其不存在。fileName is null, is Empty, contains invalid characters, or does not exist.

-或--or- 上載檔案時發生錯誤。An error occurred while uploading the file.

-或--or- 沒有來自裝載 (Host) 資源之伺服器的回應。There was no response from the server hosting the resource.

-或--or- Content-type 開頭的 multipart 頁首。The Content-type header begins with multipart.

範例

下列程式碼範例會使用 UploadFile,將指定的檔案上傳至指定的 URI。The following code example uploads the specified file to the specified URI using UploadFile. 伺服器傳回的任何回應都會顯示在主控台上。Any response returned by the server is displayed on the console.

Console::Write( "\nPlease enter the URL to post data to : " );
String^ uriString = Console::ReadLine();

// Create a new WebClient instance.
WebClient^ myWebClient = gcnew WebClient;
Console::WriteLine
    ("\nPlease enter the fully qualified path of the file to be uploaded to the URL" );
String^ fileName = Console::ReadLine();
Console::WriteLine( "Uploading {0} to {1} ...", fileName, uriString );

// Upload the file to the URL using the HTTP 1.0 POST.
array<Byte>^responseArray = myWebClient->UploadFile( uriString, "POST", fileName );

// Decode and display the response.
Console::WriteLine( "\nResponse Received::The contents of the file uploaded are: \n {0}", 
    System::Text::Encoding::ASCII->GetString( responseArray ));
Console.Write("\nPlease enter the URL to post data to : ");
String uriString = Console.ReadLine();

// Create a new WebClient instance.
WebClient myWebClient = new WebClient();

Console.WriteLine("\nPlease enter the fully qualified path of the file to be uploaded to the URL");
string fileName = Console.ReadLine();

Console.WriteLine("Uploading {0} to {1} ...",fileName,uriString);						
// Upload the file to the URL using the HTTP 1.0 POST.
byte[] responseArray = myWebClient.UploadFile(uriString,"POST",fileName);

// Decode and display the response.
Console.WriteLine("\nResponse Received. The contents of the file uploaded are:\n{0}",
    System.Text.Encoding.ASCII.GetString(responseArray));


Console.Write(ControlChars.Cr + "Please enter the URL to post data to : ")
Dim uriString As String = Console.ReadLine()

' Create a new WebClient instance.
Dim myWebClient As New WebClient()
Console.WriteLine(ControlChars.Cr & _
    "Please enter the fully qualified path of the file to be uploaded to the URL")

Dim fileName As String = Console.ReadLine()
Console.WriteLine("Uploading {0} to {1} ...", fileName, uriString)

' Upload the file to the Url using the HTTP 1.0 POST.
Dim responseArray As Byte() = myWebClient.UploadFile(uriString, "POST", fileName)

' Decode and display the response.
Console.WriteLine(ControlChars.Cr + "Response Received. The contents of the file uploaded are: " & _
    ControlChars.Cr & "{0}", System.Text.Encoding.ASCII.GetString(responseArray))

下列程式碼範例顯示可接受已張貼檔案且適用于 UploadFile 方法的 ASP.NET 網頁。The following code example shows an ASP.NET page that can accept posted files and is suitable for use with the UploadFile method. 網頁必須位於 Web 服務器上。The page must reside on a Web server. 其位址會提供 UploadFile 方法之 address 參數的值。Its address provides the value for the address parameter of the UploadFile method.

<%@ Import Namespace="System"%>
<%@ Import Namespace="System.IO"%>
<%@ Import Namespace="System.Net"%>
<%@ Import NameSpace="System.Web"%>

<Script language="C#" runat=server>
void Page_Load(object sender, EventArgs e) {
    
    foreach(string f in Request.Files.AllKeys) {
        HttpPostedFile file = Request.Files[f];
        file.SaveAs("c:\\inetpub\\test\\UploadedFiles\\" + file.FileName);
    }	
}

</Script>
<html>
<body>
<p> Upload complete.  </p>
</body>
</html>
<%@ Import Namespace="System"%>
<%@ Import Namespace="System.IO"%>
<%@ Import Namespace="System.Net"%>
<%@ Import NameSpace="System.Web"%>

<Script language="VB" runat=server>
    Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
        
        Dim f As String
        Dim file
        For Each f In Request.Files.AllKeys
            file = Request.Files(f)
            file.SaveAs("c:\inetpub\test\UploadedFiles\" & file.FileName)
        Next f
        
    End Sub

</Script>
<html>
<body>
<p> Upload complete. </p>
</body>
</html>

備註

當 address 指定 HTTP 資源時,UploadFile 方法會使用 method 參數中指定的 HTTP 方法,將本機檔案傳送至資源,並從伺服器傳回任何回應。When address specifies an HTTP resource, the UploadFile method sends a local file to a resource using the HTTP method specified in the method parameter and returns any response from the server. 這個方法會在上傳檔案時封鎖。This method blocks while uploading the file. 若要在等候伺服器回應時繼續執行,請使用其中一種 UploadFileAsync 方法。To continue executing while waiting for the server's response, use one of the UploadFileAsync methods.

如果 method 參數指定了伺服器或 address 資源無法辨識的動詞,則基礎通訊協定類別會決定發生什麼事。If the method parameter specifies a verb that is not understood by the server or the address resource, the underlying protocol classes determine what occurs. 通常會擲回 WebException,並設定 Status 屬性來指出錯誤。Typically, a WebException is thrown with the Status property set to indicate the error.

如果 BaseAddress 屬性不是空字串(""),而且 address 不包含絕對 URI,address 必須是與 BaseAddress 結合的相對 URI,才能形成所要求資料的絕對 URI。If the BaseAddress property is not an empty string ("") and address does not contain an absolute URI, address must be a relative URI that is combined with BaseAddress to form the absolute URI of the requested data. 如果 QueryString 屬性不是空字串,則會將它附加至 addressIf the QueryString property is not an empty string, it is appended to address.

注意

在應用程式中啟用網路追蹤時,這個成員會輸出追蹤資訊。This member outputs trace information when you enable network tracing in your application. 如需詳細資訊,請參閱.NET Framework 中的網路追蹤For more information, see Network Tracing in .NET Framework.

UploadFile(Uri, String, String)

使用指定的方法,將指定的本機檔案上載至指定的資源。Uploads the specified local file to the specified resource, using the specified method.

public:
 cli::array <System::Byte> ^ UploadFile(Uri ^ address, System::String ^ method, System::String ^ fileName);
public byte[] UploadFile (Uri address, string method, string fileName);
member this.UploadFile : Uri * string * string -> byte[]
Public Function UploadFile (address As Uri, method As String, fileName As String) As Byte()

參數

address
Uri

要接收檔案之資源的 URI。The URI of the resource to receive the file.

method
String

傳送檔案給資源所使用的方法。The method used to send the file to the resource. 如果是 null,預設的 HTTP 為 POST,而 FTP 則為 STOR。If null, the default is POST for http and STOR for ftp.

fileName
String

要傳送至資源的檔案。The file to send to the resource.

傳回

Byte[]

Byte 陣列,包含來自資源的回應主體。A Byte array containing the body of the response from the resource.

例外狀況

address 參數是 nullThe address parameter is null. -或--or- fileName 參數是 nullThe fileName parameter is null.

合併 BaseAddressaddress 而形成的 URI 是無效的。The URI formed by combining BaseAddress, and address is invalid.

-或--or- fileNamenullEmpty,表示其中包含無效的字元,或其不存在。fileName is null, is Empty, contains invalid characters, or does not exist.

-或--or- 上載檔案時發生錯誤。An error occurred while uploading the file.

-或--or- 沒有來自裝載 (Host) 資源之伺服器的回應。There was no response from the server hosting the resource.

-或--or- Content-type 開頭的 multipart 頁首。The Content-type header begins with multipart.

備註

當 address 指定 HTTP 資源時,UploadFile 方法會使用 method 參數中指定的 HTTP 方法,將本機檔案傳送至資源,並從伺服器傳回任何回應。When address specifies an HTTP resource, the UploadFile method sends a local file to a resource using the HTTP method specified in the method parameter and returns any response from the server. 這個方法會在上傳檔案時封鎖。This method blocks while uploading the file. 若要在等候伺服器回應時繼續執行,請使用其中一種 UploadFileAsync 方法。To continue executing while waiting for the server's response, use one of the UploadFileAsync methods.

如果 method 參數指定了伺服器或 address 資源無法辨識的動詞,則基礎通訊協定類別會決定發生什麼事。If the method parameter specifies a verb that is not understood by the server or the address resource, the underlying protocol classes determine what occurs. 通常會擲回 WebException,並設定 Status 屬性來指出錯誤。Typically, a WebException is thrown with the Status property set to indicate the error.

如果 BaseAddress 屬性不是空字串(""),而且 address 不包含絕對 URI,address 必須是與 BaseAddress 結合的相對 URI,才能形成所要求資料的絕對 URI。If the BaseAddress property is not an empty string ("") and address does not contain an absolute URI, address must be a relative URI that is combined with BaseAddress to form the absolute URI of the requested data. 如果 QueryString 屬性不是空字串,則會將它附加至 addressIf the QueryString property is not an empty string, it is appended to address.

注意

在應用程式中啟用網路追蹤時,這個成員會輸出追蹤資訊。This member outputs trace information when you enable network tracing in your application. 如需詳細資訊,請參閱.NET Framework 中的網路追蹤For more information, see Network Tracing in .NET Framework.

適用於