C# SQLite数据库操作

WinCE项目开发   VS2008

自己写的SQLite数据库管理类代码如下：

SQLiteManager.cs 

using System.Data;
using System.Data.SQLite;
using System.IO;
using System.Reflection;

namespace TeachHMI
{
public class SQLiteManager
{
public SQLiteManager(string DataBaseName,string DataTableName)
{
this.dbName = DataBaseName;
this.dtName = DataTableName;
}

//数据库文件名
string dbName;
//数据表名
string dtName;
string appPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase);
//数据库连接语句
string ConnStr;
//数据库连接
public SQLiteConnection conn;
//SQLiteCommand实例，用于对SQLite发出指令
SQLiteCommand command;
//SQLiteDataAdapter实例，用于将数据库数据填充至DataSet
SQLiteDataAdapter adapter;
//SQLiteDataReader实例，用于读取数据表中数据
SQLiteDataReader reader;

/// <summary>
/// 数据库连接
/// </summary>
public void InitializeSQLite()
{
this.ConnStr = "Data Source=" + appPath + "\\" + dbName + ";Pooling=true;FailIfMissing=false";
conn = new SQLiteConnection(ConnStr);
//打开连接
conn.Open();
}

/// <summary>
/// 创建数据表
/// </summary>
/// <param name="CreateCommand"></param>
public void CreateTable(string CreateCommand)
{
command = new SQLiteCommand(conn);
command.CommandText = "CREATE TABLE IF NOT EXISTS " + dtName + CreateCommand;
command.ExecuteNonQuery();
}

/// <summary>
/// 执行SQL命令，返回受影响的行数
/// </summary>
/// <param name="Command">命令语句</param>
public void ExeNonQueryCmd(string Command)
{
command = new SQLiteCommand(conn);
command.CommandText = Command;
command.ExecuteNonQuery();
}

/// <summary>
/// 执行SQL命令，返回SQLiteDataReader
/// </summary>
/// <param name="Command"></param>
/// <returns></returns>
public SQLiteDataReader ExeReaderCmd(string Command)
{
command = new SQLiteCommand(conn);
command.CommandText = Command;
reader = command.ExecuteReader();  //返回类型为SQLiteDataReader
return reader;
}

/// <summary>
/// 填充DataSet
/// </summary>
/// <param name="ds"></param>
public void DataFill(DataSet ds)
{
adapter = new SQLiteDataAdapter("SELECT * FROM " + dtName, conn);
adapter.Fill(ds, dtName);
}
}
}

读取数据表中某单元格内数据：

public static SQLiteManager SQLlog;
public static SQLiteDataReader Reader;
int Num = int.Parse(dataGrid1[dataGrid1.CurrentRowIndex, 0].ToString());
string SearchCmd = "SELECT * FROM InfoLog WHERE 序号=" + Num + "";
Reader = SQLlog.ExeReaderCmd(SearchCmd);
Reader.Read();
listView1.Items[0].SubItems[1].Text = Reader.GetString(7);  //得到数据表中序号为 Num 的这条记录中索引为 7 的列中数据
listView1.Items[1].SubItems[1].Text = Reader.GetString(8);
Reader.Close();

插入指令：INSERT INTO UserInfo VALUES 1,小李
更新指令：UPDATE UserInfo SET 用户ID=1
删除指令：DELETE FROM UserInfo WHERE 用户ID=2,姓名='小李'