我从以下代码中收到错误:
int dreamX[];
private void Form1_Load(object sender, EventArgs e)
{
sumX();
}
private void sumX()
{
for (var i = 0; i < 8; i++)
{
dreamX[i] =
from Control control in Controls
where
control.GetType() == typeof(TextBox)
&& control.Name.StartsWith("box")
select Convert.ToInt32(((TextBox)control).Text);
}
}
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我收到此错误,如何显式转换此错误.
"无法将类型'System.Collections.Generic.IEnumerable -int-'隐式转换为'int'"
这个线程安全吗?
private static bool close_thread_running = false;
public static void StartBrowserCleaning()
{
lock (close_thread_running)
{
if (close_thread_running)
return;
close_thread_running = true;
}
Thread thread = new Thread(new ThreadStart(delegate()
{
while (true)
{
lock (close_thread_running)
{
if (!close_thread_running)
break;
}
CleanBrowsers();
Thread.Sleep(5000);
}
}));
thread.Start();
}
public static void StopBrowserCleaning()
{
lock (close_thread_running)
{
close_thread_running = false;
}
}
Run Code Online (Sandbox Code Playgroud) 我已经实现了在生成一个Xml序列化程序集的接受答案中提到的更改作为我的构建的一部分
<Target Name="AfterBuild" DependsOnTargets="AssignTargetPaths;Compile;ResolveKeySource" Inputs="$(MSBuildAllProjects);@(IntermediateAssembly)" Outputs="$(OutputPath)$(_SGenDllName)">
<!-- Delete the file because I can't figure out how to force the SGen task. -->
<Delete Files="$(TargetDir)$(TargetName).XmlSerializers.dll" ContinueOnError="true" />
<SGen BuildAssemblyName="$(TargetFileName)" BuildAssemblyPath="$(OutputPath)" References="@(ReferencePath)" ShouldGenerateSerializer="true" UseProxyTypes="false" KeyContainer="$(KeyContainerName)" KeyFile="$(KeyOriginatorFile)" DelaySign="$(DelaySign)" ToolPath="$(SGenToolPath)" Platform="$(Platform)">
<Output TaskParameter="SerializationAssembly" ItemName="SerializationAssembly" />
</SGen>
</Target>
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构建exe项目时出现错误信息:
错误14反映类型'myNamespace.myAssembly.myForm.MicroContact'时出错.C:\ dev\src\myClient\myClient\SGEN myClient
这是MicroContact的代码(这里没有什么独特之处):
Public Class MicroContact
Implements IComparable
Private _id As Long
Private _name As String
Public Property Id() As Long
Get
Return _id
End Get
Set(ByVal value As Long)
_id = …Run Code Online (Sandbox Code Playgroud) 我有一个外部数据库,正在向我提供信息.一个将其数据保存为本机GUID格式,而我的其他数据源提供标准.NET GUID格式字符串.
有没有一种整洁的方式从Native GUID转换为GUID结构?
还有任何验证位来确定提供的值是否为Native GUID?如果有的话我似乎找不到任何东西.
区别如下:
typedef struct _GUID
{
DWORD Data1;
WORD Data2;
WORD Data3;
BYTE Data4[8];
} GUID;
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Data1,Data2和Data3的字节顺序相反,但Data4保持不变,请参阅http://en.wikipedia.org/wiki/Globally_unique_identifier了解更多信息
类似于:成员名称不能与其封闭类型相同,除非我无法更改元数据,我想完全忽略该类.
我试图在Visual Studio 2010中添加服务引用,但我收到以下错误.
自定义工具"DataServiceClientGenerator"失败.数据服务客户端代码生成失败:指定的架构无效.错误:(0,0):错误0042:名称foo不能用于Microsoft.Crm.Sdk.Data.Services.foo类型.成员名称不能与其封闭类型相同.
我明白这个错误是因为有人foo在对象中命名了一个字段,foo但我无法改变它.
因此,如果无法在CRM中进行任何更改,我该如何生成服务参考?
我想过下载$metadata然后删除有问题的类型,然后保存它(因为类型不是我将使用的类型).但我不知道如何让它发挥作用,因为它不是过于直接.
我已经尝试用C#和VB.NET制作服务引用并且都没有工作,理想情况下它将是一个适用于两者的解决方案,但在这一点上,我将开放一个只适用于其中一个的解决方案.
我正在尝试使用交换网络服务从交换机访问共享日历,有人可以向我提供有关如何执行此操作的信息吗?
我试过了:
ExchangeService myService = new ExchangeService (ExchangeVersion.Exchange2007_SP1);
myService.Credentials = new NetworkCredential ("user@domain.com", "12345");
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但我可能并不总是拥有这些帐户的密码,而我登录的帐户确实具有共享日历访问权限.
在SQL中,在插入预先排序的表时,是否可以在将行与整个表一起排序时插入一行?如
create table positional_order (
num number,
txt varchar2(10)
);
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现有表格
row 1 (3, 'three' );
row 2 (4, 'four' );
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插入一个新行
row 3 (1, 'one');
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插入后
桌子变成了
row 1 (1, 'one');
row 2 (3, 'three' );
row 3 (4, 'four' );
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这可能吗?
或者我必须将行插入表中,然后选择顺序?
顺便说一句,我正在使用sqlite.
谢谢,
CRUD被归类为DDL或DML或两者.CRUD是操作Create Read Update and Delete
我试图在MVC3项目中使用LINQ获取十进制值.
我怎么得到它?它看起来很简单,但我不能得到单个十进制值而不是Product.aWeekPrice列表.
我怎样才能得到特定的ThreeDayPrice?获得threeDayPrice之后,它将在if条件中用于给出不同的条件,如下面的代码中所示:
public decimal GetTotal(decimal price)
{
// Multiply product price by count of that album to get
// the current price for each of those product in the cart
// sum all product price totals to get the cart total
//In select part, I have got error, 'cannot convert type
//'System.Linq.IQueryable<decimal>' to 'decimal'
decimal threeDayPrice = (from cartItems in db.Cart
where cartItems.cartId == ShoppingCartId
select (decimal)cartItems.Product.threeDayPrice);
decimal aWeekPrice = (from cartItems in db.Cart
where cartItems.cartId == ShoppingCartId
select …Run Code Online (Sandbox Code Playgroud) 下面的代码完美*如果我将光标限制为几个组,但如果我让它在我的整个域上运行,我在AD中遇到1000个记录限制.关于如何获得此分页的任何想法?
*完美是因为它应该只返回数量低于1000记录限制的有限数量的记录.
CREATE TABLE #MemberOfGroups
(
groupName VARCHAR (400),
cn VARCHAR (400),
displayName VARCHAR (400)
);
SET NOCOUNT ON;
DECLARE @t AS VARCHAR (100),
@t2 AS VARCHAR (1000),
@ot AS VARCHAR (4000),
@tt AS VARCHAR (4000);
DECLARE gC CURSOR
FOR SELECT cn,
distinguishedName
FROM OPENQUERY (ADSI, 'SELECT cn, distinguishedName
FROM ''LDAP://DC=coal,DC=local''
WHERE objectCategory = ''group''');
OPEN gC;
FETCH NEXT FROM gC INTO @t, @t2;
WHILE @@FETCH_STATUS = 0
BEGIN
SET @ot = '''SELECT cn, displayName
FROM ''''LDAP://DC=coal,DC=local''''
WHERE objectCategory = …Run Code Online (Sandbox Code Playgroud) sql t-sql sql-server active-directory active-directory-group
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