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September 2007 - Posts

Tuesday, September 25, 2007 12:10 AM

Saving a file to the local disk in Silverlight

All user code in Silverlight runs in a sandbox. Hence, for security reasons, there are no APIs to directly open local files from disk. However, there is a OpenFileDialog class which allows a Silverlight app to open files on disk. Human intervention is
Posted by shrib | 7 Comments
Monday, September 10, 2007 2:53 AM

Late-binding and ByRef parameters

VB, VBA, and VBScript pass arguments by reference by default. A subroutine definition can explicitly override the default by specifying that a parameter should be passed by value. This does raise two issues in the face of late-binding: How are arbitrary
Posted by shrib | 0 Comments
Monday, September 10, 2007 2:33 AM

Oleview hangs on Vista when run from elevated cmd prompt

Oleview has been hanging and taking up all the CPU when I tried to open a typelib on a Vista machine. I saw http://support.microsoft.com/kb/176938 and tried to follow the recommended solution (regsvr32 iviewers.dll), but that did not fix it either. It
Posted by shrib | 0 Comments
Tuesday, September 04, 2007 7:40 PM

Using IReflect to expose a type as IDispatch to COM

The CLR supports marshalling of objects that support the IReflect interface as IDispatch COM objects. Similarly, IExpando gets marshalled as IDispatchEx . Here is a sample of a managed type called ManagedIDispatch which is used from VBScript and used
Posted by shrib | 4 Comments

Attachment(s): ManagedIDispatch.cs
 
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