/// <summary>clear (set to null) objects stored in DNObjectsCollection</summary>
/// <param name="keys">an array of keys to be cleared</param>
/// <param name="removeEvent">if true, removes event on the objects</param>
public void ClearDNObjectsCollectionEntries(int[] keys, bool removeEvent)
{
foreach (int key in keys)
{
if (removeEvent)
{
RemoveEvents(key);
}
DNObjectsCollection.Update(key, null);
}
}
/// <summary>
/// Duplicates a DNObjectsCollection entry and returns the new key
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public int DuplicateDNObjectsCollectionEntry(int sourceKey)
{
String[] currentTaskDNEventsNames = DNObjectsCollection.GetCurrentTaskDNEventsNames(sourceKey);
Object sourceObj = DNObjectsCollection.GetDNObj(sourceKey);
Type sourceDNType = DNObjectsCollection.GetDNType(sourceKey);
int key = DNObjectsCollection.CreateEntry(sourceDNType);
DNObjectsCollection.Update(key, sourceObj);
DNObjectEventsCollection.addEvents(sourceObj, currentTaskDNEventsNames);
return(key);
}
/// <summary>Updates specified entry in DNObjectCollection table</summary>
/// <param name="destKey">Destination entry key</param>
/// <param name="srcObj">Source .net object</param>
/// <returns></returns>
public void UpdateDNObject(int destKey, Object srcObj)
{
// for controls, events are queried from MgGui.dll when the control is created.
String[] currentTaskDNEventsNames = DNObjectsCollection.GetCurrentTaskDNEventsNames(destKey);
Object destObj = DNObjectsCollection.GetDNObj(destKey);
Type destDNType = DNObjectsCollection.GetDNType(destKey);
// perform a cast into Type 'destDNType'
if (destDNType != null)
{
srcObj = DNConvert.doCast(srcObj, destDNType);
}
// check if the object has changed
bool valsEqual = (srcObj == destObj || srcObj != null && destObj != null && srcObj.Equals(destObj));
if (!valsEqual)
{
// update the object into DNObjectCollection
DNObjectsCollection.Update(destKey, srcObj);
DNObjectEventsCollection.removeEvents(destObj);
DNObjectEventsCollection.addEvents(srcObj, currentTaskDNEventsNames);
}
}