private int GetCount()
{
uint count;
HResult.Try(_propertyStoreInterface.GetCount(out count));
return((int)count);
}
private T[] GetSafeArray <T>()
{
var dimCount = (uint)HResult.Try(NativeMethods.OleAut32.SafeArrayGetDim(pointerUnion.Pointer1)).SuccessValue;
if (dimCount > 1)
{
throw new NotSupportedException("Multidimensional SafeArrays are not supported.");
}
int lBound, uBound;
HResult.Try(NativeMethods.OleAut32.SafeArrayGetLBound(pointerUnion.Pointer1, dimCount, out lBound));
HResult.Try(NativeMethods.OleAut32.SafeArrayGetUBound(pointerUnion.Pointer1, dimCount, out uBound));
var elemCount = uBound - lBound + 1;
var result = new T[elemCount];
var index = new int[1];
for (var i = 0; i < elemCount; i++)
{
index[0] = lBound + i;
object element;
HResult.Try(NativeMethods.OleAut32.SafeArrayGetElement(pointerUnion.Pointer1, index, out element));
result[i] = (T)element;
}
return(result);
}
public PropVariant GetValue(PropertyKey key)
{
if (Contains(key))
{
PropVariant result;
HResult.Try(_propertyStoreInterface.GetValue(ref key, out result));
return(result);
}
else
{
return(PropVariant.Empty);
}
}
public PropertyKey GetAt(int index)
{
if ((index < 0) || (index >= Count))
{
throw new IndexOutOfRangeException(
String.Format("Index must be between 0 and {0} (inclusive) for this instance.", Count - 1));
}
PropertyKey result;
HResult.Try(_propertyStoreInterface.GetAt((uint)index, out result));
return(result);
}
public void SetValue(KeyValuePair <PropertyKey, PropVariant> value)
{
if (Contains(value.Key))
{
var key = value.Key;
var propValue = value.Value;
HResult.Try(_propertyStoreInterface.SetValue(ref key, ref propValue));
propValue.Dispose();
}
else
{
throw new KeyNotFoundException(String.Format("The specified key ({0}) was not found.", value.Key.ToString()));
}
}
public void Dispose()
{
// Free pinned managed resources
if ((varType & VarType.Flag_FlagMask) == VarType.Flag_ByRef)
{
if (handleUnion.handle.IsAllocated)
{
handleUnion.handle.Free();
}
}
// Free native resources
unsafe
{
fixed(PropVariant *thisPtr = &this)
{
HResult.Try(NativeMethods.Ole32.PropVariantClear(thisPtr));
}
}
// Suppress finalization
GC.SuppressFinalize(this);
}
private void SetSafeArray(Array value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
if (value.Rank > 1)
{
throw new NotSupportedException("Multidimensional arrays are not supported.");
}
var bounds = new SafeArrayBound[1];
bounds[0] = new SafeArrayBound(value.GetLength(0), value.GetLowerBound(0));
var arrayPtr = NativeMethods.OleAut32.SafeArrayCreate(VarType.Unknown, 1, bounds);
IntPtr arrayDataPtr;
HResult.Try(NativeMethods.OleAut32.SafeArrayAccessData(arrayPtr, out arrayDataPtr));
try
{
for (var i = bounds[0].LowerBound; i < bounds[0].LowerBound + bounds[0].NumElements; i++)
{
var element = value.GetValue(i);
var elementPtr = (element != null) ? Marshal.GetIUnknownForObject(element) : IntPtr.Zero;
Marshal.WriteIntPtr(arrayDataPtr, i * IntPtr.Size, elementPtr);
}
}
finally
{
HResult.Try(NativeMethods.OleAut32.SafeArrayUnaccessData(arrayPtr));
}
varType = VarType.Flag_Array | VarType.Unknown;
pointerUnion.Pointer1 = arrayPtr;
}
public void Commit()
{
HResult.Try(_propertyStoreInterface.Commit());
}