/// <summary>
/// Adds the passed in (valid store) GUID to the end of the current OS entry display list for store.
/// </summary>
/// <param name="newGuid"></param>
/// <param name="storePath"></param>
/// <param name="errorDetails"></param>
/// <returns></returns>
public static bool AddGuidToOSDisplayList(string newGuid, string storePath, out string errorDetails)
{
// optional additional info on any errors encountered, sent back as output variable
errorDetails = string.Empty; // default to empty string ( no errors encountered)
BcdObject bcdBootMgr = new BcdObject(BcdStore_API.ImpersonationScope, Constants.GUID_WINDOWS_BOOTMGR, storePath);
ManagementBaseObject mboListElements;
bool successGetDisplayOrderObj = bcdBootMgr.GetElement(Constants.BCDE_BOOTMGR_TYPE_DISPLAY_ORDER,
out mboListElements);
if (! successGetDisplayOrderObj)
{
errorDetails = "Trouble getting boot manager display order object";
return false;
}
else
{
BcdObjectListElement listElement = new BcdObjectListElement(mboListElements);
string[] osDisplayList = listElement.Ids;
int len = osDisplayList.Length;
string[] newOsDisplayList = new string[len + 1];
for (int i = 0; i < len; i++)
{
newOsDisplayList[i] = osDisplayList[i];
}
newOsDisplayList[len] = newGuid;
//if (_updateGuidListViaObject)
//{
// // this code needs research to figure out why it's not working:
// //listElement.AutoCommit = true;
// //listElement.Ids = newOsDisplayList;
// //listElement.CommitObject();
// // DOES NOT WORK, error in WMI classes?
//}
//else
//{
// save new display list via bcdbootmgr object's SetObjectListElement method.
bool setElementStatus = bcdBootMgr.SetObjectListElement(newOsDisplayList, Constants.BCDE_BOOTMGR_TYPE_DISPLAY_ORDER);
if ( !setElementStatus)
{
errorDetails = "Trouble setting new display order list via SetObjectListElement call";
return false;
}
//}
}
return true;
}
/// <summary>
/// Overwrite the given bcd store's OS Display List (what displays on system load) with the given string array of guids.
/// Note this is very powerful make sure you know what you are doing.
/// </summary>
/// <param name="arrNewGuidArray"></param>
/// <param name="storePath"></param>
/// <param name="errorDetails"></param>
/// <returns></returns>
public static bool SetOSDisplayListGuids(string[] arrNewGuidArray, string storePath, out string errorDetails)
{
// optional additional info on any errors encountered, sent back as output variable
errorDetails = string.Empty; // default to empty string ( no errors encountered)
if (arrNewGuidArray.Length == 0)
{
errorDetails = "This will delete ALL OS displayed list items, effectively making system boot NON-FUNCTIONAL. Disabling this functionality per this version of library...";
return false;
}
BcdObject bcdBootMgr = new BcdObject(BcdStore_API.ImpersonationScope, Constants.GUID_WINDOWS_BOOTMGR, storePath);
ManagementBaseObject mboListElements;
bool successGetDisplayOrderObj = bcdBootMgr.GetElement(Constants.BCDE_BOOTMGR_TYPE_DISPLAY_ORDER,
out mboListElements);
if (!successGetDisplayOrderObj)
{
errorDetails = "Trouble getting boot manager display order object";
return false;
}
else
{
BcdObjectListElement listElement = new BcdObjectListElement(mboListElements);
// save new display list via bcdbootmgr object's SetObjectListElement method.
bool setElementStatus = bcdBootMgr.SetObjectListElement(arrNewGuidArray, Constants.BCDE_BOOTMGR_TYPE_DISPLAY_ORDER);
if (!setElementStatus)
{
errorDetails = "Trouble setting new display order list via SetObjectListElement call";
return false;
}
}
return true;
}