如何：使用 OLE DB 建立資料庫 (以程式設計的方式)
SQL Server 2005 Compact Edition (SQL Server Compact Edition) 的 OLE DB 提供者會顯示 IDBDataSourceAdmin 介面，讓您得以透過此介面建立與管理 SQL Server Compact Edition 中的資料庫。若要建立新資料庫，您可以指定 DBPROP_INIT_DATASOURCE 屬性，以便為資料庫指定名稱。
如需詳細資訊，請參閱＜以 OLE DB 建立資料庫＞。
範例
下列範例說明如何使用 SQL Server Compact Edition 的 OLE DB 提供者建立加密資料庫。若要建立只有密碼保護或標準的資料庫，請移除不必要的 DBPROP 結構。
// Object declarations
HRESULT hr = NOERROR;
DBPROPSET dbpropset[2];
DBPROP dbprop[1]; // Property array to initialize the provider.
DBPROP sscedbprop[2]; // Property array for SSCE security properties
INT i = 0;
IDBDataSourceAdmin *pIDBDataSourceAdmin = NULL;
IUnknown *pIUnknownSession = NULL;
// Create an instance of the OLE DB provider.
hr = CoCreateInstance( CLSID_SQLSERVERCE_3_0, 0, CLSCTX_INPROC_SERVER,
IID_IDBDataSourceAdmin, (void**)& pIDBDataSourceAdmin);
if(FAILED(hr))
{
goto Exit;
}
// Initialize property structures.
VariantInit(&dbprop[0].vValue);
for (int i = 0; i < sizeof(sscedbprop) / sizeof(sscedbprop[0]); i++)
{
VariantInit(&sscedbprop[i].vValue);
}
// Specify the property with name of the database.
dbprop[0].dwPropertyID = DBPROP_INIT_DATASOURCE;
dbprop[0].dwOptions = DBPROPOPTIONS_REQUIRED;
dbprop[0].vValue.vt = VT_BSTR;
dbprop[0].vValue.bstrVal = SysAllocString(L"NewDatabase.sdf");
if(NULL == dbprop[0].vValue.bstrVal)
{
hr = E_OUTOFMEMORY;
goto Exit;
}
// Specify the property for encryption.
sscedbprop[0].dwPropertyID = DBPROP_SSCE_ENCRYPTDATABASE;
sscedbprop[0].dwOptions = DBPROPOPTIONS_REQUIRED;
sscedbprop[0].vValue.vt = VT_BOOL;
sscedbprop[0].vValue.boolVal = VARIANT_TRUE;
// Specify the password.
sscedbprop[1].dwPropertyID = DBPROP_SSCE_DBPASSWORD;
sscedbprop[1].dwOptions = DBPROPOPTIONS_REQUIRED;
sscedbprop[1].vValue.vt = VT_BSTR;
sscedbprop[1].vValue.bstrVal = SysAllocString(L"mypassword");
if(NULL == sscedbprop[1].vValue.bstrVal)
{
hr = E_OUTOFMEMORY;
goto Exit;
}
// Initialize the property sets.
dbpropset[0].guidPropertySet = DBPROPSET_DBINIT;
dbpropset[0].rgProperties = dbprop;
dbpropset[0].cProperties = sizeof(dbprop)/sizeof(dbprop[0]);
dbpropset[1].guidPropertySet = DBPROPSET_SSCE_DBINIT ;
dbpropset[1].rgProperties = sscedbprop;
dbpropset[1].cProperties = sizeof(sscedbprop)/sizeof(sscedbprop[0]);
// Create and initialize the database.
hr = pIDBDataSourceAdmin->CreateDataSource(sizeof(dbpropset)/sizeof(dbpropset[0]),
dbpropset, NULL, IID_IUnknown, &pIUnknownSession);
if(FAILED(hr))
{
goto Exit;
}
// At this point, the new encrypted database is created.
Exit:
// Do cleanup tasks here.
return;