.NETѧϰÊÖ¼ÇÖ®£ºlinq to SQL(¶þ)
ÔÚVisual Studio 2008 ÖÐʹÓÃO/RÉè¼ÆÆ÷£º
µãÌí¼ÓÏîÄ¿£¬Ñ¡Ôñ´´½¨Linq to SQLÏîÄ¿£¬Ê¹Ó÷þÎñÆ÷×ÊÔ´¹ÜÀíÆ÷Á¬½ÓNorthwindÊý¾Ý¿â£¬½«CustomersºÍOrdersÁ½¸ö±íÍϵ½Éè¼Æ½çÃæÉÏ£¬ÏµÍ³»á×Ô¶¯´´½¨app.configºÍNorthwid.designer.cs,ǰÕßÊÇÅäÖÃÁ¬½ÓÊý¾Ý¿âµÄÁ¬½Ó×Ö´®£»ºóÕß»áÉú³ÉÒ»¸ö¼Ì³Ð×ÔDataContextµÄÀࣺNorthwindDataContext¡£
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static void Main(string[] args)
{
NorthwindDataContext dc= new NorthwindDataContext();
dc.Log=Console.Out;
var query=from c in dc.Customers
join o in dc.Orders on c.CustomerID equals o.CustomerID
orderby c.CustomerID
select new {
c.CustomeriD,c.CompanyName,c.Country,o.OrderID,o.OrderDate};
foreach(var item in query)
{
Console.WriteLine(item.CustomerID+"|"+item.CompanyName
+"|"+item.Country+"|"+item.OrderID
+"|"+item.OrderDate);
}
}
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static void Main(string[] args)
{
NorthwindDataContext dc= new NorthwindDataContext();
ISingleResult<Ten_Most_Expensive_ProductsResult> result=
dc.Ten_Most_Expensive_Products();
foreach(Ten_Most_Expensive_ProductsResult item in result)
{
Console.WriteLine(item.TenMostExpensiveProducts+"|"+
item.UnitPrice);
}
}
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use Master
go
if object_id('SP_SQL') is not null
drop proc SP_SQL
go
create proc [dbo].[SP_SQL](@ObjectName sysname)
as
set nocount on ;
declare @Print varchar(max)
if exists(select 1 from syscomments where ID=objec ......
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user>0
Conversion failed when converting the nvarchar value 'dbo' to data type int.
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