DSOBJECTNAMES Structure in C# 2.0

I need to access the DSOBJECTNAMES Structure in a C# 2.0 property
extension page.

According to this page: http://msdn2.microsoft.com/en-us/library/ms676011.aspx
it's declared in header Dsclient.h.  I guess this is C stuff.  Can
anyone tell me where to find this so I can use it in my .NET program?

With help from others, I've worked round this.  This isn't the
finished code but it will get you the ADsPath of the item selected to
use with a System.DirectoryServices.DirectoryEntry object.

This is the code from the sample, modified to use my new methods:

public void RefreshData(SharedDataItem sharedDataItem)
{
    this.MachineName.Text = GetUser(sharedDataItem);
    machinePropertyPage.Dirty = false;
}

Then you just need to add these methods.  This will enable you to see
the ADsPath of the selected user (or whatever):

        private string GetUser(SharedDataItem sharedDataItem)
        {
            if (sharedDataItem == null)
            {
                return "null";
            }

            byte[] dsObjectNames = sharedDataItem.GetData();

            uint itemCount = GetDWORD(dsObjectNames, 16);

            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < (int)itemCount; i++)
            {
                int offsetLocationForADsPath = 28 + i * 16;
                int offsetLocationForSchemaClass = 32 + i * 16;

                uint offsetForADsPath = GetDWORD(dsObjectNames,
offsetLocationForADsPath);
                uint offsetForSchemaClass = GetDWORD(dsObjectNames,
offsetLocationForSchemaClass);

                string aDsPath = GetString(dsObjectNames,
offsetForADsPath);
                string schemaClass = GetString(dsObjectNames,
offsetForSchemaClass);

                if (schemaClass.ToLower() != "user")
                    continue;

                sb.AppendLine(aDsPath);
            }
            return sb.ToString();
        }

I've used the for loop because you can select multiple objects and I
haven't worked out how not to display the page if multiple users are
selected.

        private static uint GetDWORD(byte[] userNames, int index)
        {
            MemoryStream ms = new MemoryStream(userNames, index, 4);
            BinaryReader br = new BinaryReader(ms);
            return br.ReadUInt32();
        }

        private static string GetString(byte[] dsObjectNames, uint
offset)
        {
            //Data is in unicode format so characters are stored
            //as a pair of bytes with the least sig byte first.
            //Each string is terminated by null which is two zero
            //bytes, i.e. 00 00.

            List<Byte> stringBytes = new List<byte>();
            bool previousByteNotNull = true;
            //int offset = (int)dsObjectNames[offsetLocation];

            byte tempByte = dsObjectNames[offset];
            while (previousByteNotNull || tempByte != byte.MinValue)
            {
                stringBytes.Add(tempByte);
                if (tempByte == byte.MinValue)
                    previousByteNotNull = false;
                else
                    previousByteNotNull = true;

                offset++;
                tempByte = dsObjectNames[offset];
            }
            byte[] byteArray = stringBytes.ToArray();
            return Encoding.Unicode.GetString(byteArray);
        }

ssg31415926 wrote:
> I need to access the DSOBJECTNAMES Structure in a C# 2.0 property
> extension page.
>
> According to this page:
http://msdn2.microsoft.com/en-us/library/ms676011.aspx
> it's declared in header Dsclient.h.  I guess this is C stuff.  Can

Have a look at my post here (http://groups.google.com/group/
microsoft.public.management.mmc/browse_thread/thread/98727e6e96e9d08d)
for an example on how to resolve the problem with multiple selected
objects. It also shows another example on how to handle DSOBJECTNAMES.

Regards