C#SQLiteWindowsMobile数据库手机技术开发

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Data.SqlClient;

using System.Data.SqlServerCe;

using System.Net;

using System.IO;

namespace WinAppGrid

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

//创建数据库的表

private Boolean CreateTable()

{

try

{

SqlCeConnection myconn = new SqlCeConnection("DataSource=mysdf.sdf");

SqlCeCommand com = new SqlCeCommand("create table PC (PCNO NVarChar(10) primary key,XH NVarChar(10) NOT NULL,WERKS NVarChar(4) NOT NULL,PC_DATE NVarChar(10))");

myconn.Open();

com.Connection = myconn;

com.ExecuteNonQuery();

myconn.Close();

MessageBox.Show("创建数据库成功！");

return true;

}

catch (Exception ex)

{

MessageBox.Show("创建数据库失败" + ex.ToString().Substring(1, 60));

return false;

}

}

private void button1_Click(object sender, EventArgs e)

{

//创建数据库

try

{

if ( File.Exists("mysdf.sdf"))

{

MessageBox.Show("数据库已经存在");

}

else

{

SqlCeEngine eng = new SqlCeEngine("DataSource=mysdf.sdf");

eng.CreateDatabase();

eng.Dispose();

MessageBox.Show("创建数据库成功");

}

Boolean rtu;

rtu = CreateTable();

if (rtu = false)

{

MessageBox.Show("数据表已经存在！");

}

else

{

MessageBox.Show("创建数据表成功！");

}

}

catch(Exception ex)

{

MessageBox.Show("创建数据库失败"+ ex.ToString().Substring(1,60));

} 

}

}

}