在类库中填充Combobox
我有一个带控件的WPF项目,
我想在我的类库中访问WPF控件并且我得到错误
The type or namespace name 'Controls' does not exist in the namespace
'System.Windows'
(are you missing an assembly reference?)
从WPF项目访问函数时不会发生问题当我尝试从类库中执行某些操作时它只会成为一个问题
我在TSQL中有以下查询
select * from users
inner join linkUserPhoneNumber on users.UserId = linkUserPhoneNumber.UserId
INNER JOIN PhoneNumber ON PhoneNumber.PhoneNumberId =
linkUserPhoneNumber.PhoneNumberId
where UserName = 'superuser' and password ='password'
我在Entity Framework中有以下查询
var query = (from u in myEntities.Users
join link in myEntities.linkUserPhoneNumbers on u.UserId equals link.UserId
join p in myEntities.PhoneNumbers on p.PhoneNumberId equals link.PhoneNumberId
where u.UserName == Username && u.Password == Password
select u).ToList();
当我尝试编译它时,我得到了
错误3名称'p'不在'equals'左侧的范围内.考虑交换'equals'两侧的表达式.
错误4"链接"名称不在"等于"右侧的范围内.考虑交换'equals'两侧的表达式.
我有以下 HEAD 标签
<head>
<title>Test</title>
<link id="css1" href="demo.css" rel="stylesheet" type="text/css">
</head>
我希望能够在 Javascript 中以某种方式实现
document.head.children["css1"].href = "demo2.css";
任何想法，我希望能够通过 id 进行更改，因为头部可能有更多标签
我的网格视图中有以下列
<asp:BoundField ItemStyle-Font-Bold="true"
DataFormatString="£{0:C2}" DataField="PriceBasePrice"
HeaderText="Price you pay" ItemStyle-Width="120" />
传递给 Column 的值为 180.0
我认为：
DataFormatString="£{0:C2}"
价值将返回为 £180.00
但它返回为 180.0 英镑
有谁知道我应该使用什么 DataFormatString ？
我有以下代码:
#!/usr/bin/python
# -*- coding: iso-8859-15 -*-
import pygame, random
from pygame.locals import *
pygame.init()
clock = pygame.time.Clock()
and so on
应用程序都显示正常,但是当我编译代码时,我收到以下错误:
Traceback (most recent call last):
File "fish.py", line 4, in <module>
import pygame, random
File "/home/pi/pygame/pygame.py", line 2, in <module>
ImportError: No module named locals
------------------
(program exited with code: 1)
Press return to continue
有人可以帮忙吗？我是Python和Linux的新手.
我做了以下事情:
pi@raspberrypi:~$ sudo apt-get install python-pygame
Reading package lists... Done
Building dependency tree
Reading state information... Done
python-pygame is already the newest …c# ×3
asp.net ×1
class ×1
css ×1
gridview ×1
html ×1
javascript ×1
pygame ×1
python ×1
raspberry-pi ×1
sql ×1
sql-server ×1
stylesheet ×1
wpf ×1