SQLite.Net-PCL 如何将 DateTime 插入 SQLite [英] How SQLite.Net-PCL insert DateTime into SQLite

问题描述

这个类将被 SQLite.Net-PCL 创建为一个表

 类购买{[SQLite.Net.Attributes.PrimaryKey, SQLite.Net.Attributes.AutoIncrement]公共 int QId { 获取；设置;}公共日期时间购买日期{获取；设置;}公共整数数量{得到；设置;}}

我需要将此日期插入到 SQLite DB 中的 tblPurchase 中.

strDate ="2016/08/10"strTime ="10:17:26"string[] strAr_Date = strDate.Split('/');string strYear = strAr_Date[0].ToString();string strMth = strAr_Date[1].ToString();string strDay = strAr_Date[2].ToString();

//- 基于 DateTime.Now 重新创建日期

 string strDateTime = strDay + "/" + strMth + "/" + strYear + " " + strTime;DateTime dt = DateTime.Parse(strDateTime);

此 dt 将插入以下 SQLite.Net-PCL :

 public static void InsertQueueData(string strContentA, string strContentB){var db = new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), DBPath);var newItem = new Purchase(){购买日期 = dt,数量 = 20};db.Insert(newItem);}

问题:

1) 这个 dt (PurchaseDate = dt) 会在插入时被 SQlite.Net-PCL 转换为 SQLite 格式 yyyy-mm-dd hh:mm:ss 吗?

2) 可以使用这个:
var db = new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), DBPath);

编辑_2:

使用方法(1)插入一个DateTime如下:DateTime dt = DateTime.Parse(strDateTime);该方法必须包括:var db = new SQLiteConnection(new SQLitePlatformWinRT(), DBPath,false);(1)public static void InsertQueueData(string strContentA, string strContentB){var db = new SQLiteConnection(new SQLitePlatformWinRT(), DBPath,false);var newItem = new Purchase(){购买日期 = dt,数量 = 20};db.Insert(newItem);}2)采购类必须这样声明:课时购买{[SQLite.Net.Attributes.PrimaryKey, SQLite.Net.Attributes.AutoIncrement]公共 int QId { 获取；设置;}公共字符串 PurchaseDate { 获取；设置;}//不要使用 DateTime PurchaseDate公共整数数量{得到；设置;}}Edit_3 <br/>公共静态字符串 DBPath = Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path, "Purchase.sqlite");public static string strDbName = "Purchase.sqlite";私有无效 CreateDBNow(){var DBPath = Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path, "Purchase.sqlite");使用 (SQLite.Net.SQLiteConnection conn = new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), DBPath)){conn.CreateTable();}}请帮忙.谢谢

InEdit_3

使用:new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), DBPath))

解决方案

这个 dt (PurchaseDate = dt) 会在插入时被 SQlite.Net-PCL 转换为 SQLite 格式 yyyy-mm-dd hh:mm:ss 吗?

答案是否定的.Datetime 将在 SQLite 中转换为以下格式:

我正在使用

This class will be created as a table by SQLite.Net-PCL

 class Purchase
    {
        [SQLite.Net.Attributes.PrimaryKey, SQLite.Net.Attributes.AutoIncrement]
        public int QId { get; set; }
        public DateTime PurchaseDate { get; set; }
        public int Qty { get; set; }
    }

I need to insert this date into this tblPurchase in SQLite DB.

strDate ="2016/08/10"   
strTime ="10:17:26"

string[] strAr_Date = strDate.Split('/');
string strYear = strAr_Date[0].ToString();
string strMth = strAr_Date[1].ToString();
string strDay = strAr_Date[2].ToString();

//- Recreate Date base on DateTime.Now

 string strDateTime = strDay + "/" + strMth + "/" + strYear + " " + strTime;    
  DateTime dt = DateTime.Parse(strDateTime);

This dt will be inserted with below SQLite.Net-PCL :

 public static void InsertQueueData(string strContentA, string strContentB)
{
 var db = new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), DBPath);

var newItem = new Purchase()
            {  
                PurchaseDate = dt,                
                Qty = 20
            };

            db.Insert(newItem);
}

Questions:

1) Is this dt ( PurchaseDate = dt) will be convert to SQLite Format yyyy-mm-dd hh:mm:ss by SQlite.Net-PCL when insert?

2) Can use this:
var db = new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), DBPath);

Edit_2:

to use method(1) to insert a DateTime as below:

DateTime dt = DateTime.Parse(strDateTime);


The method must include :
var db = new SQLiteConnection(new SQLitePlatformWinRT(), DBPath,false);

(1)
public static void InsertQueueData(string strContentA, string strContentB)
{

var db = new SQLiteConnection(new SQLitePlatformWinRT(), DBPath,false);

var newItem = new Purchase()
   {  
     PurchaseDate = dt,                
              Qty = 20
    };

  db.Insert(newItem);
}

2) The purchase Class  must declare in this way :

class Purchase
 {
   [SQLite.Net.Attributes.PrimaryKey, SQLite.Net.Attributes.AutoIncrement]
   public int QId { get; set; }

   public string PurchaseDate { get; set; } // Dont use DateTime PurchaseDate

   public int Qty { get; set; }
 }





   Edit_3 <br/>

    public static string DBPath = Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path, "Purchase.sqlite");

    public static string strDbName = "Purchase.sqlite";

private void CreateDBNow()
{
 var DBPath = Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path, "Purchase.sqlite");
using (SQLite.Net.SQLiteConnection conn = new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), DBPath))
  {
     conn.CreateTable<Purchase>();
 }

 }


        Please help. Thanks

InEdit_3

use : new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), DBPath))

解决方案

Is this dt ( PurchaseDate = dt) will be convert to SQLite Format yyyy-mm-dd hh:mm:ss by SQlite.Net-PCL when insert?

The answer is No. The Datetime will be convert to following format in SQLite:

I'm using SQLite Toolbox to inspect the data.

If you want to convert the DateTime in format of yyyy-mm-dd hh:mm:ss. You need to use:

//false stands for 'storeDateTimeAsTicks'
//And the table need to be recreated if the table aready exists 
db = new SQLiteConnection(new SQLitePlatformWinRT(), DBPath,false);

Then the DateTime format in SQLite will be like this:

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