public string GetCategoriesInUnit(
	ConnectionId connectionId,
	SessionId sessionId,
	UnitId unitId,
	string moduleName
)

Public Function GetCategoriesInUnit ( 
	connectionId As ConnectionId,
	sessionId As SessionId,
	unitId As UnitId,
	moduleName As String
) As String

<root>
    <status>Integer value</status>
    <statustext>String value</statustext>
    <categories>
        <cs_category>
            <categoryid>Integer value</categoryid>
            <categoryname>String value</categoryname>
            <modulename>String value</modulename>
            <unitname>String value</unitname>
            <unitid>Integer value</unitid>
            <edittemplateid>Integer value</edittemplateid>
        </cs_category>
        <!-- more cs_category elements can follow -->
    </categories>
</root>

private string GetCatsUnits()
{
   // The commented code below is for application outside
   // a Content Studio web site only. This code block
   // opens a new session but since sessions identifiers and connection identifiers
   // are already available on the web site there is no need for this.
   /*
     const int CS_ConnectionId = 1236;
     SessionManager sman = new SessionManager();
     int CS_UserSessionId = sman.OpenSession(CS_ConnectionId);
   */
   CategoryReader c = new CategoryReader();
   return c.GetCategoriesInUnit(CS_ConnectionId, CS_UserSessionId, 2, "XMLDocument");
}

Private Sub GetCatsUnits() As String
   ''The commented code below is for application outside
   ''a Content Studio web site only. This code block
   ''opens a new session but since sessions identifiers and connection identifiers
   ''are already available on the web site there is no need for this.
   '
   '  Const CS_ConnectionId As Integer = 1236
   '  Dim sman As New SessionManager()
   '  int CS_UserSessionId = sman.OpenSession(CS_ConnectionId)
   '
   Dim c As New CategoryReader()
   Return c.GetCategoriesInUnit(CS_ConnectionId, CS_UserSessionId, 2, "XMLDocument")
End Sub