The below code is in C#

this._AdRoot = new DirectoryEntry("LDAP://" + (string)this._AdRootDSE.Properties["defaultNamingContext"].Value);

I am converting it into VB.NEt

Me._AdRoot = New DirectoryEntry("LDAP://" + Convert.ToString(Me._AdRootDSE.Properties("default NamingContext").Value))

 Is my conversion from C# to VB.NEt correct? i am getting the correct output with C# code above but not with VB.NET

Does it compile, does it run? That's how we would tell if it's right.

You could probably shorten it a little:

Me._AdRootDSE.Properties("defaultNamingContext").V alue.ToString()

-Peter

i have to display all the Organisational units in my firm.
in the C# it is declared as
 private void myInitializeComponent()
        {
            lvwColumnSorter = new ListViewColumnSorter();
            this.listView_ad.ListViewItemSorter = lvwColumnSorter;

            try
            {
                this._AdRootDSE = new DirectoryEntry("LDAP://rootDSE");
                this._AdRoot = new DirectoryEntry("LDAP://" + (string)this._AdRootDSE.Properties["defaultNamingContext"].Value);

                /*
                foreach(string property in this._AdRoot.Properties.PropertyNames)
                {
                    MessageBox.Show(property + " = " + this._AdRoot.Properties[property].Value);
                }*/

                TreeNode root = new TreeNode((string)this._AdRootDSE.Properties["defaultNamingContext"].Value,(int)AdImages.AdRoot,(int)AdImages.AdRoot);

                root.Tag = this._AdRoot;
                this.treeView_ad.Nodes.Clear();
                this.treeView_ad.Nodes.Add(root);
            }
            catch
            {
                throw new Exception("Error connecting to AD");
            }
        }

and I have converted it to vb.net as
Private Sub AdBrowserForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

            lvwColumnSorter = New ListViewColumnSorter
            Me.listview_ad.ListViewItemSorter = lvwColumnSorter

            Try

                Me._AdRootDSE = New DirectoryEntry("LDAP://rootDSE")
                Me._AdRoot = New DirectoryEntry("LDAP://" + Convert.ToString(Me._AdRootDSE.Properties("default NamingContext").Value))

                'for each(string property in this._AdRoot.Properties.PropertyNames)
                '{
                'MessageBox.Show(property + " = " + this._AdRoot.Properties[property].Value);
                '}*/
                Dim root As TreeNode
                root = New TreeNode(CType(Me._AdRootDSE.Properties("defaultNa mingContext").Value, String), CType(AdImages.AdRoot, Integer), CType(AdImages.AdRoot, Integer))

                root.Tag = Me._AdRoot
                Me.treeview_ad.Nodes.Clear()
                Me.treeview_ad.Nodes.Add(root)
                MsgBox("connection established")

            Catch

                Throw New Exception("Error connecting to AD")
            End Try
which when i compile i get an error"Object reference not set to an object"
 for the line"lvwColumnSorter = New ListViewColumnSorter". when i comment this line , connection to the AD is established but it is not retirving any details.

I don't see where lvwColumnSorter is declared in either the C# or VB. However can't see all the code so it might be declared globally in the class, which I can only assume from the lack of declaration in the C#.

However, I believe that the "Object reference not set to an object" error is only a runtime error. The compiler won't know that a variable hasn't been set to a value until it tries to actually do something with it at runtime.

One of the differences between C# and VB (at least up till 1.1) is that the VB compiled will allow you to code the use of an unassigned variable while C# will choke and tell you you're using a variable that hasn't been assigned a value yet.

-Peter