有两个样本应用程序演示如何使用 DB2 Everyplace .NET Data Provider 为 WinCE 和 Win32 开发应用程序：
两个文件都在以下位置：
\DB2Everyplace\Clients\Win32\database\nmp\samples
下面是样本应用程序之一的示例。
using System;
using System.Text;
using System.Data;
using IBM.Data.DB2.DB2e;
/*
* Sample1
*
* The following example creates a table, insert some rows to it, fetches
* all the rows from the table, and finally drops the table.
*
*/
namespace IBM.Data.DB2.DB2e.Samples
{
class DB2eSample1
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main(string[] args)
{
DB2eConnection conn = null;
DB2eCommand cmd = null;
DB2eDataReader reader = null;
String connString = @"database=.\; uid=user1; pwd=user1";
int rowsAffected = 0;
try
{
conn = new DB2eConnection(connString);
conn.Open();
Console.WriteLine("creating table t1...");
cmd = new DB2eCommand("create table t1 (c1 int primary key not null,
c2 smallint, c3 char(10), c4 varchar(10), c5 decimal(8,2), c6 date,
c7 time, c8 timestamp )", conn);
rowsAffected = cmd.ExecuteNonQuery();
Console.WriteLine("inserting a row into table t1...");
cmd.CommandText = "insert into t1 values (1, 10, 'John',
'Yip', null, current date, current time, current timestamp)";
rowsAffected = cmd.ExecuteNonQuery();
Console.WriteLine("inserting a row into table t1...");
cmd.CommandText = "insert into t1 values (2, 20, 'Mary', 'Jann',
2.2, current date, current time, current timestamp)";
rowsAffected = cmd.ExecuteNonQuery();
cmd.CommandText = "select * from t1";
Console.WriteLine("fetching resultset from table t1...");
reader = cmd.ExecuteReader();
while (reader.Read())
{
if (!reader.IsDBNull(0))
Console.Write(reader.GetInt32(0) + "\t");
else
Console.Write("NULL " + "\t");
if (!reader.IsDBNull(1))
Console.Write(reader.GetInt16(1) + "\t");
else
Console.Write("NULL " + "\t");
if (!reader.IsDBNull(2))
Console.Write(reader.GetString(2) + "\t");
else
Console.Write("NULL " + "\t");
if (!reader.IsDBNull(3))
Console.Write(reader.GetString(3) + "\t");
else
Console.Write("NULL " + "\t");
if (!reader.IsDBNull(4))
Console.Write(reader.GetDecimal(4) + "\t");
else
Console.Write("NULL " + "\t");
if (!reader.IsDBNull(5))
Console.Write(reader.GetDate(5) + "\t");
else
Console.Write("NULL " + "\t");
if (!reader.IsDBNull(6))
Console.Write(reader.GetTime(6) + "\t");
else
Console.Write("NULL " + "\t");
if (!reader.IsDBNull(7))
Console.Write(reader.GetDateTime(7) + "\t");
else
Console.Write("NULL " + "\t");
Console.WriteLine();
}
reader.Close();
reader = null;
Console.WriteLine("dropping table t1...");
cmd.CommandText = "drop table t1";
cmd.ExecuteNonQuery();
}
catch (DB2eException e1)
{
int cnt = e1.Errors.Count;
for (int i=0; i < cnt; i++)
{
Console.WriteLine("Error #" + i + "\n" +
"Message: " + e1.Errors[i].Message + "\n" +
"Native: " + e1.Errors[i].NativeError.ToString() + "\n" +
"SQL: " + e1.Errors[i].SQLState + "\n");
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (reader != null)
{
reader.Close();
reader = null;
}
if (conn != null)
{
conn.Close();
conn = null;
}
}
} // end of Main
} // end of class
} // end of namespace
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