Re: casting type for objectGuid

dl
Date: 05/28/05 

Date: Sat, 28 May 2005 18:47:05 +0800

Hi Joe
The problem with datatable is whenever I try to assign with the following
statement I get a casting error
dr[i] = (string)resEnt.Properties["objectGuid"][0];

I saw an example that can write NativeGuid directly from the returned
directoryentry, as below, does it mean I instantiate another directoryEntry
instance and simply assign this NativeGuid to a string variable?

TIA

String myADSPath =
"LDAP://onecity/CN=Users,DC=onecity,DC=corp,DC=fabrikam,DC=com";
DirectoryEntry myDirectoryEntry=new
DirectoryEntry(myADSPath,UserName,SecurelyStoredPassword);

// Display the Guid and NativeGuid.
Console.WriteLine("The GUID of the ADS object:"+
                  myDirectoryEntry.Guid);
Console.WriteLine("The Native GUID of the ADS"+
                  "object:"+myDirectoryEntry.NativeGuid);

"Joe Kaplan (MVP - ADSI)" <joseph.e.kaplan@removethis.accenture.com> wrote
in message news:ubyIYssYFHA.980@TK2MSFTNGP12.phx.gbl...
> In AD/S.DS, objectGUID is returned from a DirectoryEntry or SearchResult
as
> a byte array. You would want to cast that to a byte array, then pass that
> byte array to the constructor on a Guid structure. That will give you a
> valid .NET Guid.
>
> I can't remember the exact syntax to pass it into SQL to get it set up as
a
> UniqueIdentifier column (which is the correct SQL type for a GUID), but as
I
> recall, you pass it in your query as a String. Call the ToString method
on
> the Guid to get this.
>
> HTH,
>
> Joe K.
>
> <dl> wrote in message news:Olh5aApYFHA.3220@TK2MSFTNGP14.phx.gbl...
> > Hi
> > I am trying to put a user's objectGuid as the primary key onto a
datatable
> > and be used as the unique key on editing / updating. But I seem to get
> > casting error with the following statement
> > dt.Columns.Add(new DataColumn("object_Guid", typeof(string)));
> >
> > Any idea?
> >
> > TIA
> >
> > --
> >
> >
> >
>
>

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