<%@ Page language="vb"%> <% '! Support file only, run Grouping.html instead ! ' This file is used as Data_Url ' Generates data for TreeGrid body ' This is simple example, always reads and groups all rows to get their count ' Single file, without using TreeGridFramework.aspx ' ------------------------------------------------------------------------------------------------------------------------------- ' By default (false) it uses SQLite database (Database.db). You can switch to MS Access database (Database.mdb) by setting UseMDB = true ' The SQLite loads dynamically its DLL from TreeGrid distribution, it chooses 32bit or 64bit assembly ' The MDB can be used only on 32bit IIS mode !!! The ASP.NET service program must have write access to the Database.mdb file !!! Dim UseMDB As Boolean = False ' --- Database initialization --- Dim Path As String = System.IO.Path.GetDirectoryName(Context.Request.PhysicalPath) Dim Conn As System.Data.IDbConnection = Nothing If UseMDB Then ' For MS Acess database Conn = New System.Data.OleDb.OleDbConnection("Data Source=""" + Path + "\\..\\Database.mdb"";Provider=""Microsoft.Jet.OLEDB.4.0"";Mode=Share Deny None;Jet OLEDB:Global Partial Bulk Ops=2;Jet OLEDB:Registry Path=;Jet OLEDB:Database Locking Mode=1;Jet OLEDB:Engine Type=5;Jet OLEDB:System database=;Jet OLEDB:SFP=False;persist security info=False;Extended Properties=;Jet OLEDB:Compact Without Replica Repair=False;Jet OLEDB:Encrypt Database=False;Jet OLEDB:Create System Database=False;Jet OLEDB:Don't Copy Locale on Compact=False;User ID=Admin;Jet OLEDB:Global Bulk Transactions=1") Else ' For SQLite database Dim SQLite As System.Reflection.Assembly = Nothing ' Required only for SQLite database Dim bits As String = "32" : If IntPtr.Size <> 4 Then bits = "64" SQLite = System.Reflection.Assembly.LoadFrom(Path + "\\..\\..\\..\\Server\\SQLite" + bits + "\\System.Data.SQLite.DLL") Conn = Activator.CreateInstance(SQLite.GetType("System.Data.SQLite.SQLiteConnection"), "Data Source=" + Path + "\\..\\Database.db") End If Conn.Open() Dim Cmd As System.Data.IDbCommand = Conn.CreateCommand() ' --- Response initialization --- Response.ContentType = "text/xml" Response.Charset = "utf-8" Response.AppendHeader("Cache-Control", "max-age=1, must-revalidate") System.Threading.Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.CreateSpecificCulture("en-US") ' --- Parse XML request --- Dim XML As String = Request("TGData") ' was set If XML = Nothing Then XML = "" ' Just for examples if called directly Dim X As System.Xml.XmlDocument = New System.Xml.XmlDocument() X.LoadXml(HttpUtility.HtmlDecode(XML)) ' --- Parses Grouping settings --- Dim Cfg As System.Xml.XmlElement = CType(X.GetElementsByTagName("Cfg")(0), System.Xml.XmlElement) Dim GroupCols() As String = Cfg.GetAttribute("GroupCols").Split(",".ToCharArray()) ' --- Generating data for body --- If GroupCols(0) = "" Then Cmd.CommandText = "SELECT COUNT(*) FROM TableData" Else Cmd.CommandText = "SELECT COUNT(*) FROM (SELECT COUNT(*) FROM TableData GROUP BY " + GroupCols(0) + ")" End If Dim R As System.Data.IDataReader = Cmd.ExecuteReader() R.Read() Dim cnt As Integer = CType(R(0), Integer) Response.Write("") cnt = (cnt + 20) / 21 Dim i As Integer For i = 0 To cnt - 1 Response.Write("") Next Response.Write("") R.Close() Conn.Close() ' -------------------------------------------------------------------------- %>