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  • asp.net selecting a checkbox from the grid view

    - by baburam
    i am trying to get checkbox value ,using c# In grid view the datasource is from oracle i have added the checkbox but the value is not coming please help me in checking the value of check box this is for selecting the candidate if the checkbox is selected the particular candidate name is selected and the candidate names are appended in a string

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  • .NET integration Framework

    - by buhtla
    Is there any kind of framework that provides some generic mechanism for integration between applications or something similar? By integration I presume data exchange (import and export) between two applications via some standard interface like Web Service.

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  • [Linq & Dictionary (.NET)] A problem with compare item value

    - by Tony
    Hi, I have defined my class: public class Host { public string Name; } then a strobgly-typed dictionary: Dictionary<string, Host> HostsTable; then I try to compare a value: if (HostsTable.Values.Where(s => s.Name == "myhostname") != null) { doSomething } and the problem is, nothing is found, even I'm sure the item is on the list. What I'm doing wrong ?

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  • Count of Distinct Int32 Values in .NET

    - by Eric J.
    I am receiving a stream of unordered Int32 values and need to track the count of distinct values that I receive. My thought is to add the Int32 values into a HashSet<Int32>. Duplicate entries will simply not be added per the behavior of HashSet. Do I understand correctly that set membership is based on GetHashCode() and that the hash code of an Int32 is the number itself? Is there an approach that is either more CPU or more memory efficient? UPDATE The data stream is rather large. Simply using Linq to iterate the stream to get the distinct count is not what I'm after, since that would involve iterating the stream a second time.

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  • .NET DB Query Without Allocations?

    - by Michael Covelli
    I have been given the task of re-writing some libraries written in C# so that there are no allocations once startup is completed. I just got to one project that does some DB queries over an OdbcConnection every 30 seconds. I've always just used .ExecuteReader() which creates an OdbcDataReader. Is there any pattern (like the SocketAsyncEventArgs socket pattern) that lets you re-use your own OdbcDataReader? Or some other clever way to avoid allocations? I haven't bothered to learn LINQ since all the dbs at work are Oracle based and the last I checked, there was no official Linq To Oracle provider. But if there's a way to do this in Linq, I could use one of the third-party ones.

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  • Communicating Between .NET Programs

    - by IronManIngellis
    I wanted to set up a simple data communication between two C# applications, and I'm not sure what the best method is in doing so. I've previously used Java Sockets and ServerSockets to get the job done, but I'm new to C#, so I've come for advice :) It's going to be two way communication with two clients exchanging strings or something of the like.

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  • && Operation in .NET

    - by Ram
    Which one out of the following two should be preferred while doing && operation on two values. if (!StartTime.Equals(DateTime.MinValue) && !CreationTime.Equals(DateTime.MinValue)) Or if (!(StartTime.Equals(DateTime.MinValue) && CreationTime.Equals(DateTime.MinValue)) What is the difference between the two?

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  • Thousands separator in .Net/F#

    - by rwallace
    What's the recommended way to print an integer with thousands separator? Best I've come up with so far is let thousands(x:int64) = String.Format("{0:0,0}", x) Which works in most cases, but prints zero as 00.

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  • Asp.net with MVC multiple model in one view (create, update)

    - by Abdalmohaymen
    I have problem in asp.ne Mvc with multiple model in one view on create and update I 'm work on exams system class Questions and class Answers Question is aparent class and Answers is a child class [Bind(exclude("id"))] class Quesions { public string question{get; set;} public Datetime Timepostquestion{get; set;} } [Bind(exclude("id"))] class Answers { public string answer{get; set;} public Datetime Timepostanswer{get; set;} public questionId {get; set;} } in a view I use two classes how to use classes in insert and update what a way which I have to solve my problem

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  • code needed in ASP.NET [closed]

    - by user333366
    1) how to write a code to close a conform box by pressing esc key. 2) how to write a code to save a data what ever we entered in the present web form if we press yes in conform box.... if press no need to be in same web form..

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  • .Net file writing and string splitting issues

    - by sagar
    I have a requirement where the file should be split using a given character. Default splitting options are CRLF and LF In both these cases I am splitting the line by \r\n and \r respectively. Also I have requirement where any size of file should be processed. (Processing is basically inserting the given string in a file at given position). For this I am reading the file in chunk of 1024 bytes. Then I am applying the string.Split() method. Split() method gives options for ignoring white spaces and none. I have to add back these line break characters to the line. for this I am using a binary writer and I am writing the byte array to the new file. Issue:- 1) When line break is CRLF, and the split option is NONE, while spaces are also added in the splitted array. Second option is given (to ignore white spaces) CRLF works properly. 2)Bit ignoring white space option creates other problems, as I am reading the file byte by byte I can't ignore a white space. 3)When line break characters are other than default(e.g. '|', a null value is prepended to the resulting line. Can anybody give solution to my issues?

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  • asp.net mvc postback

    - by user266909
    I have a controller with the following two Edit methods. The edit form displays correctly with all additional dropdown lists from the FormViewModel. However, when I changed some field values and submitted the form. None of the changed fields were saved. The fields in the postbask collection have default or null values. I have another edit form which update another table. On submit, the changed values are saved. Does anyone know why? // GET: /Transfers/Edit/5 public ActionResult Edit(int id) { Transfer transfer = myRepository.GetTransfer(id); if (transfer == null) return View("NotFound"); return View(new TransferFormViewModel(transfer)); } // // POST: /Transfers/Edit/5 [AcceptVerbs(HttpVerbs.Post)] public ActionResult Edit(int id, Transfer collection) { Transfer transfer = vetsRepository.GetTransfer(id); if (transfer == null) return View("NotFound"); else { try { UpdateModel(transfer); vetsRepository.Save(); return RedirectToAction("Details", new { id = transfer.TransfersID }); } catch { ModelState.AddModelErrors(transfer.GetRuleViolations()); return View(new TransferFormViewModel(transfer)); } } }

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  • .net File.Copy very slow when copying many small files (not over network)

    - by Guavaman
    I'm making a simple folder sync backup tool for myself and ran into quite a roadblock using File.Copy. Doing tests copying a folder of ~44,000 small files (Windows mail folders) to another drive in my system, I found that using File.Copy was over 3x slower than using a command line and running xcopy to copy the same files/folders. My C# version takes over 16+ minutes to copy the files, whereas xcopy takes only 5 minutes. I've tried searching for help on this topic, but all I find is people complaining about slow file copying of large files over a network. This is neither a large file problem nor a network copying problem. I found an interesting article about a better File.Copy replacement, but the code as posted has some errors which causes problems with the stack and I am nowhere near knowledgeable enough to fix the problems in his code. Are there any common or easy ways to replace File.Copy with something more speedy?

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