/// <summary>
/// Executes a query to retrieve objects.
/// </summary>
/// <param name="query">The query which will be executed.</param>
/// <returns>An object collection that contains the result set of the query.</returns>
/// <exception cref="System.ObjectDisposedException">Object already disposed.</exception>
/// <exception cref="System.ArgumentNullException"><paramref name="query"/> is null.</exception>
#endregion
internal IWbemClassObjectEnumerator InternalExecuteQuery(WmiQuery query)
{
if (this.isDisposed)
{
throw new ObjectDisposedException(typeof(WmiConnection).FullName);
}
if (query == null)
{
throw new ArgumentNullException(MethodBase.GetCurrentMethod().GetParameters()[0].Name);
}
this.Open();
IWbemClassObjectEnumerator enumerator;
WbemClassObjectEnumeratorBehaviorOption behaviorOption = (WbemClassObjectEnumeratorBehaviorOption)query.EnumeratorBehaviorOption;
if (this.IsRemote)
{
AuthenticationLevel authLevel = this.options.EnablePackageEncryption ? AuthenticationLevel.PacketPrivacy : AuthenticationLevel.PacketIntegrity;
// use the native function by the extension method for a faster call
enumerator = this.wbemServices.ExecQuery(query.ToString(), behaviorOption, this.context, authLevel, ImpersonationLevel.Impersonate, this.credential.UserName, this.credential.Password, this.Authority);
}
else
{
enumerator = this.wbemServices.ExecQuery(query.ToString(), behaviorOption, this.context);
}
return(enumerator);
}
/// <summary>
/// Executes a query to retrieve objects.
/// </summary>
/// <param name="query">The query which will be executed.</param>
/// <returns>An object collection that contains the result set of the query.</returns>
/// <exception cref="System.ObjectDisposedException">Object already disposed.</exception>
/// <exception cref="System.ArgumentNullException"><paramref name="query"/> is null.</exception>
#endregion
public WmiObjectEnumerator ExecuteQuery(WmiQuery query)
{
if (query == null)
{
throw new ArgumentNullException(MethodBase.GetCurrentMethod().GetParameters()[0].Name);
}
return(new WmiObjectEnumerator(this.InternalExecuteQuery(query)));
}