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• What production software have you written in F# in the past year or so that you would previously hav

  - by Peter McGrattan

  Over the last few years F# has evolved into one of Microsoft's fully supported languages employing many ideas incubated in OCaml, ML and Haskell. Over the last several years C# has extended it's general purpose features by introducing more and more functional language features: LINQ (list comprehension), Lamdas, Closures, Anonymous Delegates and more... Given C#'s adoption of these functional features and F#'s taxonomy as an impure functional language (it allows YOU to access framework libraries or change shared state when a function is called if you want to) there is a strong similarity between the two languages although each has it's own polar opposite primary emphasis. I'm interested in any successful models employing these two languages in your production polyglot programs and also the areas within production software (web apps, client apps, server apps) you have written in F# in the past year or so that you would previously have written in C#.

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• Why is there no .NET Community Process?

  - by michielvoo

  I was doing some research into general topics of software engineering and I came across the Java Community Process website: The JCP is the mechanism for developing standard technical specifications for Java technology. Anyone can register for the site and participate in reviewing and providing feedback for the Java Specification Requests (JSRs), and anyone can sign up to become a JCP Member and then participate on the Expert Group of a JSR or even submit their own JSR Proposal. Seems like a good idea to me, and there are lots of very well written specifications and reference implementations on the JCP website. So why is there no .NET Community Process? Is that something that Microsoft could or should start? Maybe they could install it on Codeplex.net and hand over the keys to the community.

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• How can I upload a file to a Sharepoint Document Library using Silverlight and client web-services?

  - by pclem12

  Most of the solutions I've come across for Sharepoint doc library uploads use the HTTP "PUT" method, but I'm having trouble finding a way to do this in Silverlight because it has restrictions on the HTTP Methods. I visited this http://msdn.microsoft.com/en-us/library/dd920295(VS.95).aspx to see how to allow PUT in my code, but I can't find how that helps you use an HTTP "PUT". I am using client web-services, so that limits some of the Sharepoint functions available. That leaves me with these questions: Can I do an http PUT in Silverlight? If I can't or there is another better way to upload a file, what is it? Thanks

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• Non laggy movement in Flex or WPF

  - by PaN1C_Showt1Me

  I'm trying to learn something about 2D games programming. For this purpose I've downloaded many samples developed in: Flex and Microsoft WPF. I've noticed that all the animations / moving objects are kind of non-smooth. I've seen a Flex example with double buffering which solved the image flickering, but it was laggy too. WPF example too. Just to mentioned, all examples were drawing on Canvas. I'm just curious, is it possible to have a wonderful non-laggy movement on the GUI in Flash or WPF ? (e.g. like a real game, coded in C++)

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• MessageContract serialization with DCS

  - by kurtaj

  Is there a way to make the DataContractSerializer serialize a [MessageContract] the same way it appears when transmitted over SOAP? I have a class that appears as follows on the wire for a WCF call: <TestRequest xmlns="http://webservices.test.com/ServiceTest/1.1"> <Name>Just Me</Name> </TestRequest> When serializing using the DCS, it looks like this: <TestRequest xmlns:i="http://www.w3.org/2001/XMLSchema-instance" z:Id="1" xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/" xmlns="http://schemas.datacontract.org/2004/07/ServiceTest"> <_x003C_Name_x003E_k__BackingField z:Id="2">Just Me</_x003C_Name_x003E_k__BackingField> </TestRequest> I'm convinced this inconsistency is because my class is marked up as a message contract instead of a data contract: [MessageContract] [Serializable] public class TestRequest { [MessageBodyMember] public string Name { get; set; } } Is there a way to make the DCS serialize messages the same way WCF does when it creates a SOAP message?

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• Disable Task Manager using c# from Limited User Account

  - by srk

  I need to disable and enable the taskmanager from my application. I am doing this for my Kiosk application. I know i can do this by changing the Key in registry using below code. But the problem is my kiosk application will run in limited user account which does not allow the application to change key in registry level. Code working perfectly in Administrator account : RegistryKey regkey; string keyValueInt = "1"; string subKey = "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System"; regkey = Registry.CurrentUser.CreateSubKey(subKey); regkey.SetValue("DisableTaskMgr", keyValueInt); regkey.Close(); How can i achieve this in Limited user account ?

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• What is my problem with ASP.NET pubslishing?

  - by Shankarooni

  I am done testing my site and I want to upload it to a site like this http://www.university.edu/mydepartment/myname the admin told me the server runs on .NET 3.5. So i used Linq ... now i tried to upload the site by two ways: when i just copy everything (with modification of web.config database settings) i get an error: CS0246: The type or namespace name 'DataClassesDataContext' could not be found (are you missing a using directive or an assembly reference?) Version Information: Microsoft .NET Framework Version:2.0.50727.3082; ASP.NET Version:2.0.50727.3082 Note here it says version 2.0 did he just lie to me? or its my configuration mistake? anyway, i added the reference, nothing changes. I tried also publishing (Build, publish) with option to keep the pre-comiled site updatable, and I get one line saying: this is a makefile and should be deleted! what is going on?

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• Get only latest row, grouped by a column

  - by Cylindric

  I have a large data-set of emails sent and status-codes. ID Recipient Date Status 1 [email protected] 01/01/2010 1 2 [email protected] 02/01/2010 1 3 [email protected] 01/01/2010 1 4 [email protected] 02/01/2010 2 5 [email protected] 03/01/2010 1 6 [email protected] 01/01/2010 1 7 [email protected] 02/01/2010 2 In this example: all emails sent to someone have a status of 1 the middle email (by date) sent to them has a status of 2, but the latest is 1 the last email sent to others has a status of 2 What I need to retrieve is a count of all emails sent to each person, and what the latest status code was. The first part is fairly simple: SELECT Recipient, Count(*) EmailCount FROM Messages GROUP BY Recipient ORDER BY Recipient Which gives me: Recipient EmailCount [email protected] 2 [email protected] 3 [email protected] 2 How can I get the most recent status code too? The end result should be: Recipient EmailCount LastStatus [email protected] 2 1 [email protected] 3 1 [email protected] 2 2 Thanks. (Server is Microsoft SQL Server 2008, query is being run through an OleDbConnection in .Net)

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• C# database file directory

  - by Simon

  I'm using the windows forms aplication with an ms access database. And i would like to know if there is a way to show the directory of the database file (to save data in it)excpet like this: string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=save.mdb"; or this: "Data Source=D:\Simonova aktovka na namizju\matura\test5\save.mdb"; couse if i use the first one the aplication undos the changes i've made when i close it(the aplication) the second one makes me have to change the path everytime i bring the aplication to another computer(cous the direktory is different of coars) So... is there another way?

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• How to create and update spreadsheet using OLEDB in C#?

  - by vamshi

  HI! all I am creating .xls spreadsheet file using following code using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\temp.xls;Extended Properties='Excel 8.0;HDR=Yes'")) { conn.Open(); OleDbCommand cmd = new OleDbCommand("CREATE TABLE [NewSheet] ([Column1] string, [Column2] string)", conn); cmd.ExecuteNonQuery(); } but i am getting an exception at cmd.ExecuteNonQuery(); Exception is: Cannot modify the design of table 'NewSheet'. It is in a read-only database. Please help me to resolve this Thank You

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• Asp.net cached objects staying in memory

  - by GordonB

  I have a asp.net web forms app that uses System.Web.Caching.Cache to cache xml data from a number of web services for 2 hours. webCacheObj.Remove(dataCacheKey) webCacheObj.Insert(dataCacheKey, dataToCache, Nothing, DateTime.Now.AddHours(2), Nothing) Every 90 minutes a Microsoft Search Server hits a particular (spider) page which calls the code to put the objects into the cache. The issue i have is that over a period of time, the memory usage of the application grows exponentially. Lets say that in a week, the memory usage of the application pool grows to over 1gb. I'm using IIS7 and no application pool recycling is currently enabled.

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• Where to store things like user pictures using Azure? Blob Storage?

  - by n26

  I have just migrated a project of mine for test cases to Microsoft's azure. But for functionalities similar to an avatar upload I need write access to the files on the harddrive. But this is a cloud, so this is not possible. How can I build such functionalities instead? Should I use the Blob Storage or is there a better solution? Does it make sense to store all website images (f.e. layout images) in the Blob Storage? So I would have a Cookie-free Domain for my static content?

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• Help to convert PostgreSQL dates into SQL Server dates

  - by Earlz

  Hello I'm doing some data conversion from PostgreSQL to Microsoft SQL Server. So far it has all went well and I almost have the entire database dump script running. There is only one thing that is now messed up: dates. The dates are dumped to a string format. These are two example formats I've seen so far: '2008-01-14 12:00:00' and the more precise '2010-04-09 12:23:45.26525' I would like a regex (or set of regexs) that I could run so that will replace these with SQL Server compatible dates. Anyone know how I can do that?

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• Getting Google Chrome to Ignore IE Javascript

  - by swajak

  I'm creating a slideshow using javascript that fades images. Awhile back, I discovered that to change the opacity of an image, I have to use a different API, depending on whether the page is viewed in Firefox or IE. Firefox: img.style.opacity = [value 0 to 1]; IE: img.style.filter="progid:DXImageTransform.Microsoft.Alpha(opacity= [value 0 to 100] )"; So, currently, I use <script LANGUAGE="JScript"> for code that is meant for IE. This was suggested in the Mozilla docs. The problem: Chrome thinks my <script LANGUAGE="JScript"> code is valid, when it is not. How to make Chrome ignore the code inside <script LANGUAGE="JScript"> ? Or how to make my opacity code cross-browser?

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• Win7: Right place to install a program that may be 'shared' with other computers

  - by robsoft

  We have an app that currently installs itself into 'program files\our app', and it puts the internal data files into the common Application Data folder. This means the program is available to any user on that particular PC. Now we want to make a multi-user version of this program, multiple PCs accessing the program at the same time across the network. In the bad old days, under XP, we'd just have the user who installed the app 'share' the app directory and off we'd go. In principle, is this still the 'right' way to do it under Vista/Windows 7? We'd like to do this 'properly' and be as compliant as possible! Is there a recommended 'Microsoft' approach for doing this, or is it largely down to whatever we can get away with and subsequently support (hah!). I've tried researching this on the MS websites but not found anything too helpful at all - it'd be really useful to have a 'if you're trying to install this kind of thing, put it here' type guide for developers!

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• Why AutoResetEvent and ManualResetEvent does not support name in the constructor?

  - by Ikaso

  On .NET Framework 2.0 AutoResetEvent and ManualResetEvent inherit from EventWaitHandle. The EventWaitHandle class has 4 different constructors. 3 of the constructors support giving a name to the event. On the other hand both ManualResetEvent and AutoResetEvent do not support naming and provide a single constructor that receives the initialState. I can simply inherit from EventWaitHandle and write my own implementation of those classes that support all the constructor overloads, but I don't like to re-invent the wheel if I do not have to. My questions are: Is there a special problem in naming events? Do you have any idea why Microsoft did not support it? Do you have a proposal better than inheriting from the EventWaitHandle class and calling the appropriate constructor as in the following example? public class MyAutoResetEvent: EventWaitHandle { public MyAutoResetEvent(bool initialState) : base(initialState, EventResetMode.AutoReset) { } public MyAutoResetEvent(bool initialState, string name) : base(initialState, EventResetMode.AutoReset, name) { } public MyAutoResetEvent(bool initialState, string name, out bool createdNew) : base(initialState, EventResetMode.AutoReset, name, out createdNew) { } public MyAutoResetEvent(bool initialState, string name, out bool createdNew, EventWaitHandleSecurity eventSecurity) : base(initialState, EventResetMode.AutoReset, string.Empty, out createdNew, eventSecurity) { } }

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• Is it a good idea to use .Net for commercial software?

  - by user146780

  I was playing around with .Net reflector today and realized that Miicrosoft's entire Expression suite is written in .Net. As a result I was pretty much able to see the underlying code for expression. This makes it far easier than binary to break copy protection. I think that that's a big deal. Is it generally recommended to make commercial software in .Net where it is fairly easy to see the source code down to the variable names? I was surprised that Microsoft didn't at least dotfescate it. Thanks

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• Download office document without the web server trying to render it

  - by Dan Revell

  I'm trying to download an InfoPath template that's hosted on SharePoint. If I hit the url in internet explorer it asks me where to save it and I get the correct file on my disk. If I try to do this programmatically with WebClient or HttpWebRequest then I get HTML back instead. How can I make my request so that the web server returns the actual xsn file and doesn't try to render it in html. If internet explorer can do this then it's logical to think that I can too. I've tried setting the Accept property of the request to application/x-microsoft-InfoPathFormTemplate but that hasn't helped. It was a shot in the dark.

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• How can i determine the version of the Windows SDK installed on my computer?

  - by NuclearCheese781

  Hello everyone :) I've very recently decided to teach myself c++ and win32 programming after learning vb.net, and i've got a very simple question: How can I determine what version of the Windows SDK is installed on my computer? I'm asking so I can install the latest version if it isn't installed allready, before i start playing around with c++. I'm using Microsoft Visual Studio 2008 SP1 as my IDE. (I spent 10 minutes using Google to search for an answer, but I couldn't find one) If anyone could help me, it would be very much appreciated. Matt.

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• foreign key constraints on primary key columns - issues ?

  - by zzzeek

  What are the pros/cons from a performance/indexing/data management perspective of creating a one-to-one relationship between tables using the primary key on the child as foreign key, versus a pure surrogate primary key on the child? The first approach seems to reduce redundancy and nicely constrains the one-to-one implicitly, while the second approach seems to be favored by DBAs, even though it creates a second index: create table parent ( id integer primary key, data varchar(50) ) create table child ( id integer primary key references parent(id), data varchar(50) ) pure surrogate key: create table parent ( id integer primary key, data varchar(50) ) create table child ( id integer primary key, parent_id integer unique references parent(id), data varchar(50) ) the platforms of interest here are Postgresql, Microsoft SQL Server.

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• Sanitize HTML before storing in the DB or before rendering? (AntiXSS library in ASP.NET)

  - by user102533

  I have an editor that lets users add HTML that is stored in the database and rendered on a web page. Since this is untrusted input, I plan to use Microsoft.Security.Application.AntiXsSS.GetSafeHtmlFragment to sanitize the HTML. Should I santiize before saving to the database or before rendering the untrusted input into the webpage? Is there an advantage in including the AntiXSS source code in my project instead of just the DLL? (Maybe I can customize the white list?) Which class file should I look in for actual implementation of the GetSafeHtmlFragment

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• Problem with dictionary key in Python

  - by Hossein

  Hi all, For some project I have to make a dictionary in which the keys are urls,among which I have this url: http://www.microsoft.com/isapi/redir.dll prd=windows&sbp=mediaplayer&ar=Media&sba=Guide&pver=6.2 the url is too long to fit in here I guess in one single line. there is a space between .dll and prd. I can build a dictionary without any errors this url is also a key. but for some reason when I want to extract the values associated to this key(url). I cannot, I get and error "error key:...." Does someone know what is wrong with this url? Are dictionary keys sensitive to some stuff? thanks

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• Performance of DirectX and Recent Windows Mobile Version

  - by Kevin

  I'm seeing very poor performance while using the managed DirectDraw wrappers for WindowsMobile. Microsoft.WindowsMobile.DirectX.Direct3D I would appear the biggest bottle neck is calling Device.Present() after building up the scene. When using the System.Diagnostics.Stopwatch and running this very trivial exmaple Using Sprites on MSDN I'm seeing it's taking approximately 150ms to call the Device.Present() method. I'm seeing this on my AT&T Tilt and on the emulator. In larger applications such as the UltimateGMan sample it's taking over a second to call this method. Does anyone have any experience with using DirectX on mobile devices? What am I missing? I would prefer to stay in the managed world but if I drop back into C++ would I see better performance?

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• I am not able to run Asp.Net MVC 2 Application

  - by Vinod B

  Hi I have trying an sample application in Asp.Net MVC 2 Application given in http://www.codeproject.com/KB/aspnet/aspnet_mvc_tutorial.aspx But i am getting the error as below Server Error in '/' Application. The resource cannot be found. Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly. Requested URL: /Views/PersonalInformation/Index.aspx Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053 Please let mw know wat is the problem

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• Can Crystal Reports Scale to Fit Page

  - by Jacob Reyes

  Hello , Can a crystal report be scaled to fit page? I'm hoping to achieve something similar to Microsoft Excel's Scale To Fit feature wherein a large spreadsheet can be scaled to fit a 8.5"x 11" page. (On MS Excel 2007 goto Page Layout Scale To Fit). Im searching of a way to make a large report fit into a smaller page during print. for example a report designed in Legal(8.5"x 14") page must be able to shrink when print previewed for Letter(8.5"x 11") page. In my crystal report, it should be scaled to fit the page by default. I was thinking maybe theres a Crystal Report Setting or C# code technique that I missed out. Any hint or link to the right direction is appreciated. Thanks!

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