using System;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlServerCe;
using System.IO;
using System.Text;

namespace SmartDeviceTest1
{
static class Program
{
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[MTAThread]
static void Main()
{

CreatDB();

//Application.Run(new Form1());
}

public static void CreatDB()
{
SqlCeConnection conn = null;
try
{
if (File.Exists("Test.sdf")) File.Delete("Test.sdf");
SqlCeEngine engine = new SqlCeEngine("Data Source = Test.sdf");
engine.CreateDatabase();

conn = new SqlCeConnection("Data Source = Test.sdf");
conn.Open();

SqlCeCommand cmd = conn.CreateCommand();
cmd.CommandText = "CREATE TABLE TestTbl(col1 int PRIMARY KEY, col2 ntext, col3 money)";

cmd.ExecuteNonQuery();

cmd.CommandText = "INSERT INTO TestTbl(col1, col2, col3) VALUES (0, 'abc', 15.66)";

cmd.ExecuteNonQuery();

cmd.CommandText = "INSERT INTO TestTbl(col1, col2, col3) VALUES (?, ?, ?)";

cmd.Parameters.Add(new SqlCeParameter("p1", SqlDbType.Int));
cmd.Parameters.Add(new SqlCeParameter("p2", SqlDbType.NText));
cmd.Parameters.Add(new SqlCeParameter("p3", SqlDbType.Money));
cmd.Parameters["p2"].Size = 50;
cmd.Prepare();
cmd.Parameters["p1"].Value = 1;
cmd.Parameters["p2"].Value = "abc";
cmd.Parameters["p3"].Value = 15.66;
cmd.ExecuteNonQuery();

cmd.Parameters.Clear();

cmd.CommandText = "SELECT * FROM TestTbl";

SqlCeDataReader rdr = cmd.ExecuteReader();

while (rdr.Read())
{
MessageBox.Show("col1 =" + rdr.GetInt32(0) +
"col2 =" + rdr.GetString(1) +
"col3 =" + rdr.GetSqlMoney(2));
}

cmd.CommandText = "UPDATE TestTbl SET col2 = 'some new value' WHERE col1 = 0";
cmd.ExecuteNonQuery();

cmd.CommandText = "SELECT * FROM TestTbl";
rdr = cmd.ExecuteReader();
while (rdr.Read())
{
MessageBox.Show("col1 = " + rdr.GetInt32(0) +
"col2 = " + rdr.GetString(1) +
" col3 = " + rdr.GetSqlMoney(2));
}

}//end try
catch (SqlCeException ee)
{
ShowErrors(ee);
}
finally
{
if (conn.State == ConnectionState.Open)
conn.Close();
}
}

public static void ShowErrors(SqlCeException e)
{
SqlCeErrorCollection errorCollection = e.Errors;
StringBuilder bld = new StringBuilder();
foreach (SqlCeError err in errorCollection)
{
bld.Append("\n Error Code: " + err.HResult.ToString("X"));
bld.Append("\n Message :" + err.Message);
bld.Append("\n Minor Err.: " + err.NativeError);
bld.Append("\n Source:" + err.Source);
foreach (int numPar in err.NumericErrorParameters)
{
if (0 != numPar) bld.Append("\n Num. Par. : " + numPar);
}
foreach (string errPar in err.ErrorParameters)
{
if (String.Empty != errPar) bld.Append("\n Err. Par. : " + errPar);
}
MessageBox.Show(bld.ToString());
bld.Remove(0, bld.Length);
}
}

}

}