台州海关TD3600上线版本

JJServer/Sqlite.cs

@@ -0,0 +1,162 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Common;
+using System.Data.SQLite;
+using System.Linq;
+using System.Text;
+using System.Threading;
+
+
+namespace JJServer
+{
+    /// <summary>
+    /// 说明：这是一个针对System.Data.SQLite的数据库常规操作封装的通用类。 
+    /// </summary>
+    public class SQLiteDBHelper
+    {
+        /// <summary>
+        ///  
+        /// </summary>
+        public string connectionString = string.Empty;
+
+
+        /// <summary>
+        /// 
+        /// </summary>
+        public static SQLiteConnection connection = null;
+
+
+        /// <summary>
+        /// 构造函数
+        /// </summary>
+        /// <param name="dbPath">数据库文件路径</param>
+        public SQLiteDBHelper(string dbPath)
+        {
+            this.connectionString = "Data Source=" + dbPath;
+        }
+
+        /// <summary>
+        /// 创建数据库文件
+        /// </summary>
+        /// <param name="dbPath"></param>
+        public static void CreateDB(string dbPath)
+        {
+            using (SQLiteConnection connection = new SQLiteConnection("Data Source=" + dbPath))
+            {
+                connection.Open();
+                using (SQLiteCommand command = new SQLiteCommand(connection))
+                {
+                    //command.CommandText = "CREATE TABLE Tranlist(ID INTEGER PRIMARY KEY,Name TEXT,IDNo TEXT,Sex TEXT,Nation TEXT,Phone TEXT,Address TEXT,Remarks TEXT,Time TEXT)";
+                    //command.ExecuteNonQuery();
+                    //command.CommandText = "DROP TABLE Tranlist";
+                    //command.ExecuteNonQuery();
+                    bool ret = ExecuteCommand("CREATE TABLE Tranlist(ID INTEGER PRIMARY KEY,Name TEXT,IDNo TEXT,Sex TEXT,Nation TEXT,Phone TEXT,Address TEXT,Remarks TEXT,Time TEXT)");
+
+                }
+            }
+        }
+
+
+        /// <summary>
+        /// 打开连接
+        /// </summary>
+        /// <param name="dataSource"></param>
+        /// <param name="password"></param>
+        public void SetDataSource(string dataSource, string password)
+        {
+            connectionString = string.Format("Data Source={0};Pooling=true;FailIfMissing=false", dataSource);
+
+
+            connection = new SQLiteConnection(connectionString);
+
+
+            if (!string.IsNullOrEmpty(password))
+            {
+                //connection.SetPassword(password);
+            }
+            connection.Open();
+        }
+
+
+        #region 通用方法
+        /// <summary>
+        /// 查询表
+        /// </summary>
+        /// <param name="sqlStr"></param>
+        /// <returns></returns>
+        public static DataTable ExecQuery(string sqlStr)
+        {
+            DataTable dt = new DataTable();
+            try
+            {
+                SQLiteDataAdapter OraDa = new SQLiteDataAdapter(sqlStr, connection);
+                OraDa.Fill(dt);
+                return dt;
+            }
+            catch (SQLiteException e)
+            {
+                string s = e.Message;
+                return null;
+            }
+        }
+
+
+        /// <summary>
+        /// 增、删、改操作  
+        /// </summary>
+        /// <param name="commandStr">sql语句</param>
+        /// <returns>是否成功</returns>
+        public static bool ExecuteCommand(string sqlStr)
+        {
+            using (SQLiteCommand cmd = new SQLiteCommand(sqlStr, connection))
+            {
+                try
+                {
+                    if (cmd.ExecuteNonQuery() > 0)
+                    {
+                        return true;
+                    }
+                    else
+                    {
+                        return false;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    ex.ToString();
+                    return false;
+                }
+            }
+        }
+
+
+        /// <summary>
+        /// 根据查询语句，获取表中记录的条数   select count(*) from t_Developer
+        /// </summary>
+        /// <param name="sqlStr"></param>
+        /// <returns></returns>
+        public static int GetRecordCount(string sqlStr)
+        {
+            using (SQLiteCommand cmd = new SQLiteCommand(sqlStr, connection))
+            {
+                try
+                {
+                    cmd.CommandText = sqlStr;
+                    SQLiteDataReader dr = cmd.ExecuteReader();
+                    if (dr.Read())
+                    {
+                        return dr.FieldCount;
+                    }
+                    return 0;
+                }
+                catch (Exception e)
+                {
+                    e.ToString();
+                    return 0;
+                }
+            }
+        }
+        #endregion
+    }
+}