Metode IAppHostProperty::SetMetadata

Mengatur metadata untuk properti saat ini.

Sintaks

HRESULT SetMetadata(  
   [in,  
   string] BSTR bstrMetadataType,  
   [in] VARIANT value  
);  

Parameter

bstrMetadataType
BSTR yang berisi nama metadata yang diminta.

value
VARIANT yang berisi metadata baru.

Tampilkan Nilai

Sebuah HRESULT. Nilai yang mungkin termasuk, tetapi tidak terbatas pada, yang ada dalam tabel berikut.

Nilai	Deskripsi
S_OK	Menunjukkan bahwa operasi berhasil.
ERROR_NOT_SUPPORTED	Menunjukkan bahwa metadata tidak dikenali.

Contoh

Contoh kode berikut mengatur configSource atribut untuk bagian system.applicationHost/sites konfigurasi dengan menggunakan SetMetadata metode .

#pragma once

#include <stdio.h>
#include <string.h>
#include <ahadmin.h>

int main()
{
    IAppHostWritableAdminManager *    pWMgr       = NULL;
    IAppHostElement              *    pElement    = NULL;
    
    HRESULT  hr                   = S_OK;
    BSTR     bstrConfigCommitPath = SysAllocString(L"MACHINE/WEBROOT/APPHOST");
    BSTR     bstrSectionName      = SysAllocString(L"system.applicationHost/sites");
    BSTR     bstrConfigSource     = SysAllocString(L"sites.config");
    BSTR     bstrConfigSourceAttr = SysAllocString(L"configSource");
    VARIANT  vtConfigSource;
    vtConfigSource.vt             = VT_BSTR;
    vtConfigSource.bstrVal        = bstrConfigSource;

    // Initialize
    hr = CoInitializeEx( NULL, COINIT_MULTITHREADED );
    if ( FAILED( hr ) )
    {
        printf_s( "ERROR: Unable to initialize\n" );
        goto exit;
    } 

    // Create
    hr = CoCreateInstance( __uuidof( AppHostWritableAdminManager ), NULL, 
            CLSCTX_INPROC_SERVER,
            __uuidof( IAppHostWritableAdminManager ), (void**) &pWMgr );
    if( FAILED( hr ) )
    {
        printf_s( "ERROR: Unable to create an IAppHostWritableAdminManager instance\n" );
        goto exit;
    }

    // Set the commit path
    hr = pWMgr->put_CommitPath( bstrConfigCommitPath );
    if ( FAILED( hr ) )
    {
        printf_s( "ERROR: Unable to set the configuration path" );
        goto exit;
    }

    // Get the admin section
    hr = pWMgr->GetAdminSection( bstrSectionName, bstrConfigCommitPath, &pElement );
    if ( FAILED( hr ) || ( &pElement == NULL ) )
    {
        if ( E_ACCESSDENIED == hr )
        {
            printf_s( "ERROR: Access to configuration denied.\n" );
            printf_s( "       Run sample as an administrator.\n" );
        }
        else
        {
            printf_s( "ERROR: Unable to get asp configuration section.\n" );
        }
        goto exit;
    }
        
    // Set the metadata
    hr = pElement->SetMetadata( bstrConfigSourceAttr, vtConfigSource );
    if ( FAILED( hr ) )
    {
        printf_s( "ERROR: Unable to set metadata\n" );
        goto exit;
    }

    pWMgr->CommitChanges();
exit:
    // Exiting / Unwinding
    if ( pElement != NULL )
    {
        pElement -> Release ();
        pElement = NULL;
    }

    if ( pWMgr != NULL )
    {
        pWMgr->Release(); 
        pWMgr = NULL;
    }

    SysFreeString( bstrConfigCommitPath );
    SysFreeString( bstrSectionName );
    SysFreeString( bstrConfigSource );
    SysFreeString( bstrConfigSourceAttr );


    // Uninitialize
    CoUninitialize();

    return 0;
};

Persyaratan

Jenis	Deskripsi
Klien	- IIS 7.0 di Windows Vista - IIS 7.5 di Windows 7 - IIS 8.0 di Windows 8 - IIS 10.0 pada Windows 10
Server	- IIS 7.0 di Windows Server 2008 - IIS 7.5 di Windows Server 2008 R2 - IIS 8.0 di Windows Server 2012 - IIS 8.5 di Windows Server 2012 R2 - IIS 10.0 di Windows Server 2016
Produk	- IIS 7.0, IIS 7.5, IIS 8.0, IIS 8.5, IIS 10.0 - IIS Express 7.5, IIS Express 8.0, IIS Express 10.0
Header	Ahadmin.h

Lihat juga

Antarmuka IAppHostProperty