public static void SetProperty(string filename, string msg, SummaryPropId summaryType)
{
IPropertySetStorage propSetStorage = null;
Guid IID_PropertySetStorage = new Guid("0000013A-0000-0000-C000-000000000046");
uint hresult = ole32.StgOpenStorageEx(filename, (int)(STGM.SHARE_EXCLUSIVE | STGM.READWRITE), (int)STGFMT.FILE, 0, (IntPtr)0, (IntPtr)0, ref IID_PropertySetStorage, ref propSetStorage);
Guid fmtid_SummaryProperties = new Guid("F29F85E0-4FF9-1068-AB91-08002B27B3D9");
IPropertyStorage propStorage = null;
hresult = propSetStorage.Create(ref fmtid_SummaryProperties, (IntPtr)0, (int)PROPSETFLAG.DEFAULT, (int)(STGM.CREATE | STGM.READWRITE | STGM.SHARE_EXCLUSIVE), ref propStorage);
PropSpec propertySpecification = new PropSpec();
propertySpecification.ulKind = 1;
propertySpecification.Name_Or_ID = new IntPtr((int)summaryType);
PropVariant propertyValue = new PropVariant();
propertyValue.FromObject(msg);
propStorage.WriteMultiple(1, ref propertySpecification, ref propertyValue, 2);
hresult = propStorage.Commit((int)STGC.DEFAULT);
System.Runtime.InteropServices.Marshal.ReleaseComObject(propSetStorage);
propSetStorage = null;
GC.Collect();
}
public static void SetProperty(string filename, string msg, SummaryPropId summaryType)
{
IPropertySetStorage propertySetStorage = null;
Guid riid = new Guid("0000013A-0000-0000-C000-000000000046");
ole32.StgOpenStorageEx(filename, 0x12, 3, 0, IntPtr.Zero, IntPtr.Zero, ref riid, ref propertySetStorage);
Guid rfmtid = new Guid("F29F85E0-4FF9-1068-AB91-08002B27B3D9");
IPropertyStorage propertyStorage = null;
propertySetStorage.Create(ref rfmtid, IntPtr.Zero, 0, 0x1012, ref propertyStorage);
PropSpec propertySpecification = new PropSpec {
ulKind = 1,
Name_Or_ID = new IntPtr((int)summaryType)
};
PropVariant propertyValues = new PropVariant();
propertyValues.FromObject(msg);
propertyStorage.WriteMultiple(1, ref propertySpecification, ref propertyValues, 2);
propertyStorage.Commit(0);
Marshal.ReleaseComObject(propertySetStorage);
GC.Collect();
}
