internal SearchCondition(ICondition nativeSearchCondition)
{
NativeSearchCondition = nativeSearchCondition ?? throw new ArgumentNullException(nameof(nativeSearchCondition));
HResult hr = NativeSearchCondition.GetConditionType(out conditionType);
if (!CoreErrorHelper.Succeeded(hr))
{
throw new ShellException(hr);
}
if (ConditionType == SearchConditionType.Leaf)
{
using (var propVar = new PropVariant())
{
hr = NativeSearchCondition.GetComparisonInfo(out canonicalName, out conditionOperation, propVar);
if (!CoreErrorHelper.Succeeded(hr))
{
throw new ShellException(hr);
}
PropertyValue = propVar.Value.ToString();
}
}
}
/// <summary>
/// Retrieves an array of the sub-conditions.
/// </summary>
public IEnumerable <SearchCondition> GetSubConditions()
{
// Our list that we'll return
List <SearchCondition> subConditionsList = new List <SearchCondition>();
// Get the sub-conditions from the native API
object subConditionObj;
Guid guid = new Guid(ShellIIDGuid.IEnumUnknown);
HResult hr = NativeSearchCondition.GetSubConditions(ref guid, out subConditionObj);
if (!CoreErrorHelper.Succeeded(hr))
{
throw new ShellException(hr);
}
// Convert each ICondition to SearchCondition
if (subConditionObj != null)
{
IEnumUnknown enumUnknown = subConditionObj as IEnumUnknown;
IntPtr buffer = IntPtr.Zero;
uint fetched = 0;
while (hr == HResult.Ok)
{
hr = enumUnknown.Next(1, ref buffer, ref fetched);
if (hr == HResult.Ok && fetched == 1)
{
subConditionsList.Add(new SearchCondition((ICondition)Marshal.GetObjectForIUnknown(buffer)));
}
}
}
return(subConditionsList);
}
/// <summary>
/// Retrieves an array of the sub-conditions.
/// </summary>
public IEnumerable <SearchCondition> GetSubConditions()
{
// Our list that we'll return
var subConditionsList = new List <SearchCondition>();
// Get the sub-conditions from the native API
object subConditionObj;
var guid = new Guid(InterfaceGuids.IEnumUnknown);
HResult hr = NativeSearchCondition.GetSubConditions(ref guid, out subConditionObj);
if (hr != HResult.S_OK)
{
throw new Exception(hr.ToString());
}
// Convert each ICondition to SearchCondition
if (subConditionObj != null)
{
var enumUnknown = subConditionObj as IEnumUnknown;
IntPtr buffer = IntPtr.Zero;
uint fetched = 0;
while (hr == HResult.S_OK)
{
hr = enumUnknown.Next(1, ref buffer, ref fetched);
if (hr == HResult.S_OK && fetched == 1)
{
subConditionsList.Add(new SearchCondition((ICondition)Marshal.GetObjectForIUnknown(buffer)));
}
}
}
return(subConditionsList);
}
