linq to sql Ôöɾ¸Ä²éÈëÃűà[linqѧϰ±Ê¼ÇÒ»]
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public class LinqTosql
{
public static GameCardSaleDataContext data = new GameCardSaleDataContext();
//Êä³öÐÂÎűíËùÓбêÌâ
public void output()
{
foreach (var item in data.News)
{
Console.WriteLine(item.Title);
}
}
//¸ù¾ÝID²éѯһÌõÊý¾Ý
public void selectbyId(int id)
{
IEnumerable<News> query = from m in data.News
where m.NewsId == id
select m;
foreach (News item in query)
{
Console.WriteLine(item.Content);
}
}
//²åÈëÒ»ÌõÊý¾Ý ·µ»ØÖ÷¼ü×ÔÔöÁÐID
public int Insert(News news)
{
data.News.InsertOnSubmit(news);
data.SubmitChanges();
return news.NewsId;
}
//ÐÞ¸Ä
public void Upade()
{
News news= data.News.Single(m => m.NewsId == 1);
news.Title = "ÄãµÄ±êÌâ±»ÎÒÐÞ¸ÄÁË!";
data.SubmitChanges();//Ìá½»µ½Êý¾Ý¿â
}
//ɾ³ý
public void delete()
{
News news = data.News.Single(m => m.NewsId == 1);
data.News.DeleteOnSubmit(news);
data.SubmitChanges();
}
}
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