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• .net thread safety

  - by george9170

  Why is locking a type considered very bad? For example, lock(typeof(DateTime)) I understand that static methods of any class in .net is considered thread safe, and that instance members are not. So it isn't necessary to lock DateTime while you are using it. The book I am reading doesn't explain why it is bad it just says it is. Any explanation will…

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• Designing a game database

  - by Ronald

  I'm trying to design a database to record game histories for a game I'm working on. I have 3 different tables: users, gamehistories, and gamescores. Columns for tables: users: uid, displayname, email gamehistories: gid, pubID, start (datetime), end (datetime) gamescores: gid, uid, score I am trying to produce the following result set given…

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• How to persist an entity which contains a field of user type using JPA2

  - by Marcin Bialon

  I'm looking for a way to persist an entity which contains a field of a user type. In this particular example I would like to persist the ts field as number of milliseconds. import org.joda.time.DateTime; @Entity public class Foo { @Id private Long id; private DateTime ts; }

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• sql: Group by x,y,z; return grouped by x,y with lowest f(z)

  - by Sai Emrys

  This is for http://cssfingerprint.com I collect timing stats about how fast the different methods I use perform on different browsers, etc., so that I can optimize the scraping speed. Separately, I have a report about what each method returns for a handful of URLs with known-correct values, so that I can tell which methods are bogus on which…

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• Handling FormatExceptions using XmlSerializer.Deserialize

  - by qntmfred

  I have a third party web service that returns this xml <book> <release_date>0000-00-00</release_date> </book> I am trying to deserialize it into this class public class Book { [XmlElement("release_date")] public DateTime ReleaseDate { get; set; } } But because 0000-00-00 isn't a valid DateTime, I get a…

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• How do I return all conflict documents from a Notes Database?

  - by ssg31415926

  I want to get all conflict documents from a Notes database. So far, i've got this: Domino.NotesSession notesSession; Domino.NotesDatabase notesDatabase = this.OpenDatabase(out notesSession); Domino.NotesDateTime dateTime = notesSession.CreateDateTime(String.Empty); Domino.NotesDocumentCollection results = …

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• Dynamic DateTimeRangeValidator using Enterprise Library 4.1?

  - by Toran Billups

  I'm trying to add a range of - 365 days and + 365 days but it appears that using this attribute in EL 4.1 only accepts a special ISO formatted string ... thus I can't simply add a normal string to this validation routine. <DateTimeRangeValidator(DateTime.Now.AddDays(2), DateTime.Now.AddDays(4))> _ I…

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• Access to modified closure, is this a ReSharper bug?

  - by hmemcpy

  I have the latest ReSharper 5.0 build (1655), where I have encountered the suggestion 'Access to modified closure' on the following code: var now = new DateTime(1970, 1, 1); var dates = new List<DateTime>(); dates.Where(d => d > now); and the now inside the lambda expression is underlined with…

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• ASP.NET MVC3 Custom Membership Provider - The membership provider name specified is invalid.

  - by David Lively

  I'm implementing a custom membership provider, and everything seems to go swimmingly until I create a MembershipUser object. At that point, I receive the error: The membership provider name specified is invalid. Parameter name: providerName In web.config the membership key is <membership…

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• how to predict which section have to put in critical section in threading

  - by Lalit Dhake

  Hi , I am using the console application i used multi threading in the same. I just want to know which section have to put inside critical section my code is : .------------------------------------------------------------------------------. public class SendBusReachSMS { public void…

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• Python mysql check for duplicate before insert

  - by Michelle Jun Lee

  Hi here is the table CREATE TABLE IF NOT EXISTS kompas_url ( id BIGINT(20) NOT NULL AUTO_INCREMENT, url VARCHAR(1000), created_date datetime, modified_date datetime, PRIMARY KEY(id) ) I am trying to do INSERT to kompas_url table only if url is not exist yet any…

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• How do you calculate the number of weeks between two dates?

  - by Kip Birgen

  How do you calculate the number of weeks between two dates? Declare @StartDate as DateTime = "01 Jan 2009"; Declare @EndDate as DateTime = "01 June 2009"; @StartDate and @EndDate

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• Sql-server Database query help

  - by menacheb

  Hi, I have a Database (Sql-server) with table named 'ProcessData' and columns named 'Process_Name' (Data Type: nvarchar(50)), 'Start_At' (DataType: DateTime) and 'End_At' (Data Type: DateTime). I need to konw for each 'Time-Interval' (let's say 1 second) how many processes (Process_Name…

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• Function that creates a timestamp in c#

  - by Konstantinos

  Hi there, I was wondering, is there a way to create a timestamp in c# from a datetime? I need a millisecond precision value that also works in Compact Framework(saying that since DateTime.ToBinary() does not exist in CF). My problem is that i want to store this value in a database…

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• Cancel outlook meeting requests via MailMessage in C#

  - by BTmuney

  I'm creating an application using the ASP.NET MVC 1 framework in C#, where I have users that register for events. Upon registering, I create an outlook meeting request public string BuildMeetingRequest(DateTime start, DateTime end, string attendees, string organizer, string…

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• Returning date from Stored procedure in ASP.Net/VB.Net

  - by Mo

  Hi, I want to execute a method on VB.Net to return a date which is in the stored procedure. I tried using ExecuteScalar but it doesnt work it retruns error 'Implicit conversion from data type datetime to int is not allowed. Use the CONVERT function to run this query' Any…

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• how to version minder for web application data

  - by dankyy1

  hi all;I'm devoloping a web application which renders data from DB and also updates datas with editor UI Pages.So i want to implement a versioning mechanism for render pages got data over db again if only data on db updated by editor pages.. I decided to use Session objects…

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• ASP.NET AJAX Doesnt Work

  - by Petras

  I have a very simple AJAX example that doesn't work. It is from the Microsoft tutorials on AJAX. When I click on button "Button1" AJAX should execute but the whole page submits. Here is the code: <%@ Page Language="C#" AutoEventWireup="true" CodeFile="1111.aspx.cs"…

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• What's wrong with this date behavior in C#?

  - by Jane McDowell

  If I output a formatted date as follows: DateTime.Parse("2010-06-02T15:26:37.789 +01:00").ToString("HH:mm:sszzz") I get the expected result: 15:26:37+01:00 However, if I parse the same date, convert to UTC and output with the same format as follows: …

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• SQL error with script to create

  - by PapaDaniel

  I used the SQL Server management studio on a table with Create Script to New and did minor changes. Give me an error "Incorrect syntax near '('" for the "(" after "WITH" /* EventType Table Creation */ CREATE TABLE [EventType] ( [pkEventID] [int]…

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• SQL server SP : @Param 's with sometime NULL values

  - by openidsujoy

  I am very new to SQL Server Stored Procedures, I am trying to create a SP that will give return a list of records in a table by filter via StartDate and EndDate , but there will be 'View All' Option so sometime those @Param might not contain any…

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• Rails 3 Nested Forms with datamapper

  - by jens freudenau

  i have two models: class MeetingPoint include DataMapper::Resource belongs_to :profile property :id, Serial property :lat, String end and class Profile include DataMapper::Resource has n, :meeting_points …

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• My style/control template out my calendar's blackout dates.

  - by Chris

  Howdy, My C#/WPF project needs a calendar. We're going to be using it to pick a range of dates for appointment scheduling. I'm told the default calendar is too small to be used by some of our reps so I've been working on resizing it. …

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• "Can't mass-assign protected attributes" with nested protected models

  - by JohnnyFive

  I'm having a hell of a time trying to get this nested model working. I've tried all manner of pluralization/singular, removing the attr_accessible altogether, and who knows what else. restaurant.rb: # == RESTAURANT MODEL # # Table…

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• Transaction on Entity FrameWork Refactoring and best performance how can i?

  - by programmerist

  i try to use transaction in Entity FrameWork. i have 3 tables Personel, Prim, Finans. in Prim table you look SatisTutari (int) if i add data in SatisTutari.Text instead of int value adding float value. Trannsaction must be run!…

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