<?xml version="1.0" encoding="utf-8" ?>
<configuration><startup useLegacyV2RuntimeActivationPolicy="true"><supportedRuntime version="v4.0"/></startup>
</configuration>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SQLite;
using System.Data;
using System.Data.Common;namespace Com.Luminji.DataService.SQLHelpers
{public class SQLiteHelper{/// <summary>/// ConnectionString样例：Data Source=Test.db3;Pooling=true;FailIfMissing=false/// </summary>public static string ConnectionString { get; set; }private static void PrepareCommand(SQLiteCommand cmd, SQLiteConnection conn, string cmdText, params object[] p){if (conn.State != ConnectionState.Open)conn.Open();cmd.Parameters.Clear();cmd.Connection = conn;cmd.CommandText = cmdText;cmd.CommandType = CommandType.Text;cmd.CommandTimeout = 30;if (p != null){foreach (object parm in p)cmd.Parameters.AddWithValue(string.Empty, parm);}}public static DataSet ExecuteQuery(string cmdText, params object[] p){using (SQLiteConnection conn = new SQLiteConnection(ConnectionString)){using (SQLiteCommand command = new SQLiteCommand()){DataSet ds = new DataSet();PrepareCommand(command, conn, cmdText, p);SQLiteDataAdapter da = new SQLiteDataAdapter(command);da.Fill(ds);return ds;}}}public static int ExecuteNonQuery(string cmdText, params object[] p){using (SQLiteConnection conn = new SQLiteConnection(ConnectionString)){using (SQLiteCommand command = new SQLiteCommand()){PrepareCommand(command, conn, cmdText, p);return command.ExecuteNonQuery();}}}public static SQLiteDataReader ExecuteReader(string cmdText, params object[] p){using (SQLiteConnection conn = new SQLiteConnection(ConnectionString)){using (SQLiteCommand command = new SQLiteCommand()){PrepareCommand(command, conn, cmdText, p);return command.ExecuteReader(CommandBehavior.CloseConnection);}}}public static object ExecuteScalar(string cmdText, params object[] p){using (SQLiteConnection conn = new SQLiteConnection(ConnectionString)){using (SQLiteCommand command = new SQLiteCommand()){PrepareCommand(command, conn, cmdText, p);return command.ExecuteScalar();}}}}
}