HttpWebResponse.ContentType 屬性
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。
取得回應的內容類型。
public:
virtual property System::String ^ ContentType { System::String ^ get(); };C#
public override string ContentType { get; }member this.ContentType : stringPublic Overrides ReadOnly Property ContentType As String字串，包含回應的內容類型。
目前的執行個體已經過處置。
下列範例會顯示這個屬性的值。
#using <System.dll>
using namespace System;
using namespace System::Net;
using namespace System::Text;
using namespace System::IO;
// Specify the URL to receive the request.
int main()
{
array<String^>^args = Environment::GetCommandLineArgs();
HttpWebRequest^ request = dynamic_cast<HttpWebRequest^>(WebRequest::Create(args[1]));
// Set some reasonable limits on resources used by this request
request->MaximumAutomaticRedirections = 4;
request->MaximumResponseHeadersLength = 4;
// Set credentials to use for this request.
request->Credentials = CredentialCache::DefaultCredentials;
HttpWebResponse^ response = dynamic_cast<HttpWebResponse^>(request->GetResponse());
Console::WriteLine("Content length is {0}", response->ContentLength);
Console::WriteLine("Content type is {0}", response->ContentType);
// Get the stream associated with the response.
Stream^ receiveStream = response->GetResponseStream();
// Pipes the stream to a higher level stream reader with the required encoding format.
StreamReader^ readStream = gcnew StreamReader(receiveStream, Encoding::UTF8);
Console::WriteLine("Response stream received.");
Console::WriteLine(readStream->ReadToEnd());
response->Close();
readStream->Close();
}
/*
The output from this example will vary depending on the value passed into Main
but will be similar to the following:
Content length is 1542
Content type is text/html; charset=utf-8
Response stream received.
<html>
...
</html>
*/
C#
using System;
using System.Net;
using System.Text;
using System.IO;
public class Test
{
// Specify the URL to receive the request.
public static void Main (string[] args)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(args[0]);
// Set some reasonable limits on resources used by this request
request.MaximumAutomaticRedirections = 4;
request.MaximumResponseHeadersLength = 4;
// Set credentials to use for this request.
request.Credentials = CredentialCache.DefaultCredentials;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Console.WriteLine("Content length is {0}", response.ContentLength);
Console.WriteLine("Content type is {0}", response.ContentType);
// Get the stream associated with the response.
Stream receiveStream = response.GetResponseStream();
// Pipes the stream to a higher level stream reader with the required encoding format.
StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
Console.WriteLine("Response stream received.");
Console.WriteLine(readStream.ReadToEnd());
response.Close();
readStream.Close();
}
}
/*
The output from this example will vary depending on the value passed into Main
but will be similar to the following:
Content length is 1542
Content type is text/html; charset=utf-8
Response stream received.
<html>
...
</html>
*/
Imports System.Net
Imports System.Text
Imports System.IO
Public Class Test
' Specify the URL to receive the request.
Public Shared Sub Main(ByVal args() As String)
Dim request As HttpWebRequest = CType(WebRequest.Create(args(0)), HttpWebRequest)
' Set some reasonable limits on resources used by this request
request.MaximumAutomaticRedirections = 4
request.MaximumResponseHeadersLength = 4
' Set credentials to use for this request.
request.Credentials = CredentialCache.DefaultCredentials
Dim response As HttpWebResponse = CType(request.GetResponse(), HttpWebResponse)
Console.WriteLine("Content length is {0}", response.ContentLength)
Console.WriteLine("Content type is {0}", response.ContentType)
' Get the stream associated with the response.
Dim receiveStream As Stream = response.GetResponseStream()
' Pipes the stream to a higher level stream reader with the required encoding format.
Dim readStream As New StreamReader(receiveStream, Encoding.UTF8)
Console.WriteLine("Response stream received.")
Console.WriteLine(readStream.ReadToEnd())
response.Close()
readStream.Close()
End Sub
End Class
'
'The output from this example will vary depending on the value passed into Main
'but will be similar to the following:
'
'Content length is 1542
'Content type is text/html; charset=utf-8
'Response stream received.
'...
'
'
屬性 ContentType 包含回應所傳回之 Content-Type 標頭的值。
| 產品 | 版本 |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
| UWP | 10.0 |
