public static void SetSingleSelectFromMultiSelectProperty(this IObjVerEx obj, int singleselect_property, int multiselect_property)
{
Vault vault = obj.objVerEx.Vault;
if (!obj.objVerEx.HasProperty(multiselect_property))
{
throw new Exception("Multi-select property not found.");
}
if (!obj.objVerEx.HasProperty(singleselect_property))
{
throw new Exception("Single-select property not found.");
}
PropertyDefAdmin mpd = vault.PropertyDefOperations.GetPropertyDefAdmin(multiselect_property);
if (mpd == null)
{
throw new Exception("Multi-select property not found.");
}
if (!mpd.PropertyDef.BasedOnValueList)
{
throw new Exception("Invalid multi-select property parameter.");
}
PropertyDefAdmin spd = vault.PropertyDefOperations.GetPropertyDefAdmin(singleselect_property);
if (spd == null)
{
throw new Exception("Single-select property not found.");
}
if (!spd.PropertyDef.BasedOnValueList)
{
throw new Exception("Invalid single-select property parameter.");
}
if (spd.PropertyDef.ValueList != mpd.PropertyDef.ValueList)
{
throw new Exception("Target property is not based on the same multi-select value with the Source.");
}
Lookups mvalues = obj.objVerEx.GetProperty(multiselect_property).TypedValue.GetValueAsLookups();
IEnumerator m_enumerator = mvalues.GetEnumerator();
m_enumerator.MoveNext();
Lookup first_mvalue = m_enumerator.Current as Lookup;
obj.objVerEx.SetProperty(singleselect_property, MFDataType.MFDatatypeLookup, first_mvalue?.Item);
}
