小编cag*_*gin的帖子

我想做这样的事情.我知道这是错的:

 var a = from h in xdoc.Root.Elements()
         where h.Element().value like = "1234"
         select h;

using System;
using System.Collections.Generic;
[Serializable]
public partial class user
{
    public int UserId { get; set; }
    public string Name { get; set; }
    public string Surname { get; set; }
    public string UserName { get; set; }
    public string Email { get; set; }
    public string Password { get; set; }
    public System.DateTime Creation { get; set; }
    public bool Status { get; set; }
    public int UserTypeId { get; set; }
}

正如您在我的代码中看到的那样,我的类被设置为可序列化.但在我更新我的.edmx文件后,此设置被删除.更新edmx文件后如何保留Serializable？

我想为mscorlib添加一些方法.例如:

string abc;

abc.IsNumeric()

我希望可以解释我的问题.

我想在for循环中创建一个var,例如

for(int i; i<=10;i++)
{
    string s+i = "abc";
}

这应该创建变量s0,s1,s2 ...到s10.

我想通过JavaScript从其他浏览器重定向到Internet Explorer.我怎样才能做到这一点？

我想在我的查询中调用我的sp,但有2个错误:

Msg 156, Level 15, State 1, Line 17
Incorrect syntax near the keyword 'EXEC'.

Msg 156, Level 15, State 1, Line 19
Incorrect syntax near the keyword 'AS'.

这是我的查询:

    SELECT O.OrderId
  ,O.Number
  ,O.Creation
  ,(SELECT Name + ' ' + Surname FROM [User] WHERE UserId = (SELECT CreatedBy FROM [User] WHERE UserId = O.UserId) ) AS OrderOwner
  ,(SELECT Name + ' ' + Surname FROM [User] WHERE UserId = O.UserId )AS Customer
  ,(SELECT Telephone1 FROM [User]  WHERE UserId =  O.UserId) …

正如您可以从标题中理解的那样,我想通过使用动态select语句来创建临时表.这是我的代码:

 declare  strwhere varchar(30);
if hour(now()) >= 16 and minute(now()) >=30 then
    set strwhere = ' day(now()) +1 ';
else 
    set strwhere = '  day(now()) ';
end if;
set @query = concat("select  pc.customerid,
                    deliverytimespanid,
                    pc.id,
                    ca.districtid,
                    pc.status,
                    pc.orderid,
                    deliverydatetime
                from packages as pc
                inner join  customeraddresses as ca on ca.id = pc.addressid
                where pc.status = 1
                and day(pc.deliverydatetime) =",strwhere,"
                and month(pc.deliverydatetime) = month(now()) 
                and year(pc.deliverydatetime) = year(now()) ");

prepare resultset from @query;
execute resultset;
deallocate prepare resultset;
create temporary table …

我正在使用Windows 7 Pro并希望在本地运行我的Web项目,但该URL www.localhost.com不起作用.

如果使用http://127.0.0.1:2710/default.aspx它有效.我检查了C:\Windows\System32\Drivers\Etc\hosts文件夹中的主机文件.如果我删除行:

#   127.0.0.1       localhost
#   ::1             localhost

没有什么变化.如何让www.localhost.com在我的机器上运行？

我想在Entity Framework中使用SQL查询.

这是我的代码:

 string sql = (@"SELECT G.GainId,
                (SELECT Name FROM Carrier WHERE CarrierId = G.CarrierId) AS Carrier,
                (SELECT Name + ' ' + Surname FROM [User] WHERE UserId = G.GainerId) AS Gainer,
                (SELECT Name + ' ' + Surname FROM [User] WHERE UserId = G.GiverId) AS Giver,
                (SELECT Name + ' ' + Surname FROM [User] WHERE UserId = G.CustomerId) AS Customer,
                    P.Name,
                    G.Gained,
                    G.Paid
                    FROM Gain AS G 
                    INNER JOIN Product AS P ON P.ProductId = G.ProductId");

            DataTable …