Re: Data bound fruit basket with SQL Server Compact Edition
- From: Jamal Mazrui <empower@xxxxxxxxx>
- To: programmingblind@xxxxxxxxxxxxx
- Date: Wed, 5 Dec 2007 10:04:36 -0500 (EST)
I wondered about that, too. Some documentation said it was not
recommended for a web server, so ASP.NET support was disabled by default
(though that could be reconfigured). My guess is that it can at least
work with small scale web sites. Perhaps MS is not wanting to discourage
purchases of the commercial SQL Server!
Jamal
On Wed, 5 Dec 2007, Octavian Rasnita wrote:
> Date: Wed, 5 Dec 2007 11:36:45 +0200
> From: Octavian Rasnita <orasnita@xxxxxxxxx>
> Reply-To: programmingblind@xxxxxxxxxxxxx
> To: programmingblind@xxxxxxxxxxxxx
> Subject: Re: Data bound fruit basket with SQL Server Compact Edition
>
> I'm just curious, why it can't work with a web server app?
>
> Octavian
>
> ----- Original Message -----
> From: "Jamal Mazrui" <empower@xxxxxxxxx>
> To: <programmingblind@xxxxxxxxxxxxx>
> Sent: Wednesday, December 05, 2007 12:12 AM
> Subject: Data bound fruit basket with SQL Server Compact Edition
>
>
> > From the archive at
> > http://www.EmpowermentZone.com/ssce_fruit.zip
> >
> > Previously, I did a fruit basket program in C# 2.0 with data binding via
> > Microsoft Access or SQLite, available at
> > http://www.EmpowermentZone.com/db_fruit.zip
> >
> > The present program is written in C# 3.0 with data binding via Microsoft
> > SQL Server Compact Edition 3.5 (previously called Mobile or EveryWhere
> > Edition). This version of SQL Server was released with the .NET Framework
> > 3.5 and Visual Studio 2008. It is a freely distributable, embeddable
> > database system, designed for both mobile devices and desktop computers
> > (but not web servers).
> >
> > A Database is contained in a single file with a .sdf extension, and may be
> > ported simply by copying the file. The software's home page is at
> > http://www.microsoft.com/sql/editions/compact/default.mspx
> >
> > The fruit basket program requires the runtime engine available from there.
> > Designer support for compact database applications is provided in Visual
> > Studio 2008, including the Express Editions.
> >
> > The code for this program tries to be minimalistic by using a layout
> > panel, inferred types, in-line properties, and anonymous event handlers.
> > The ssee_fruit.sdf database is created if not found. It tracks fruit
> > added to or deleted from the basket, so the same content is present at the
> > start of a new program session.
> >
> > Jamal
> >
> > /*
> > content of ssce_fruit.cs
> > Fruit Basket program in C# 3.0 with SQL Server Compact Edition 3.5
> > Public domain by Jamal Mazrui
> > */
> >
> > // Import namespaces
> > using System;
> > using System.Data;
> > using System.Data.SqlServerCe;
> > using System.IO;
> > using System.Windows.Forms;
> >
> > // Define class
> > class FruitBasket {
> >
> > // Define entry point of program
> > static void Main() {
> > // Define full path of database file
> > var sSdf = Path.Combine(Application.StartupPath, "ssce_fruit.sdf");
> > // Define database connection string
> > var sConnect = "Data Source=" + sSdf;
> >
> > // Define connection
> > using (var connect = new SqlCeConnection(sConnect)) {
> > var sTable = "Basket";
> > var sColumn = "Fruit";
> >
> > // Open connection if database exists, else create it
> > if (File.Exists(sSdf)) connect.Open();
> > else {
> > using (var engine = new SqlCeEngine(sConnect)) engine.CreateDatabase();
> > connect.Open();
> > var sCreate = "create table " + sTable + " (ID int identity primary key, "
> > + sColumn + " nvarchar(20))";
> > var createCommand = new SqlCeCommand(sCreate, connect);
> > createCommand.ExecuteNonQuery();
> > } // if database exists
> >
> > // Define table adapter
> > var sSelect = "select * from " + sTable;
> > var selectCommand = new SqlCeCommand(sSelect, connect);
> > var adapter = new SqlCeDataAdapter(selectCommand);
> > var builder = new SqlCeCommandBuilder(adapter);
> > var table = new DataTable(sTable);
> > adapter.Fill(table);
> >
> > // Create controls;
> > var tlp = new TableLayoutPanel {ColumnCount = 3, RowCount = 2};
> > var lblFruit = new Label {Text = "&Fruit:", Parent = tlp};
> > var txtFruit = new TextBox {Parent = tlp};
> > var btnAdd = new Button {Text = "&Add", Parent = tlp};
> > var lblBasket = new Label {Text = "&Basket:", Parent = tlp};
> > var lstBasket = new ListBox {DataSource = table, DisplayMember = sColumn,
> > Parent = tlp};
> > var btnDelete = new Button {Text = "&Delete", Parent = tlp};
> >
> > // Define Add event handler;
> > btnAdd.Click += (o, e) => {
> > var sFruit = txtFruit.Text.Trim();
> > if (sFruit.Length == 0) MessageBox.Show("No fruit to add!", "Alert");
> > else {
> > table.Rows.Add(null, sFruit);
> > adapter.Update(table);
> > lstBasket.SelectedIndex = lstBasket.Items.Count - 1;
> > txtFruit.Clear();
> > } // if fruit to add
> > }; // add
> >
> > // Transfer new ID generated by database into table
> > table.RowChanged += (o, e) => {
> > if(e.Action != DataRowAction.Add) return;
> >
> > var sTransfer = "SELECT @@identity";
> > var transferCommand = new SqlCeCommand(sTransfer, connect);
> > e.Row["ID"] = transferCommand.ExecuteScalar( );
> > }; // transfer
> >
> > // Define Delete event handler;
> > btnDelete.Click += (o,e) => {
> > var iFruit = lstBasket.SelectedIndex;
> > if (iFruit == -1) MessageBox.Show("No fruit to delete!", "Alert");
> > else {
> > table.Rows[iFruit].Delete();
> > adapter.Update(table);
> > if (iFruit == lstBasket.Items.Count) iFruit--;
> > lstBasket.SelectedIndex = iFruit;
> > } // if fruit to delete
> > }; // delete
> >
> > // Finalize dialog;
> > var dlg = new Form {Text = "Fruit Basket", AcceptButton = btnAdd,
> > StartPosition = FormStartPosition.CenterScreen, AutoSize = true,
> > AutoSizeMode = AutoSizeMode.GrowAndShrink};
> > dlg.Controls.Add(tlp);
> > // Define closing event handler
> > dlg.Closing += (o, e) => e.Cancel = (MessageBox.Show("Close program?",
> > "Confirm", MessageBoxButtons.YesNo) == DialogResult.No);
> > dlg.ShowDialog();
> > connect.Close();
> > } // using connect
> > } // Main method
> > } // FruitBasket class
> >
> > // End of ssce_fruit.cs
> >
> > __________
> > View the list's information and change your settings at
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> >
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