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• How to insert a large number of records quickly using ADO.Net Entity Model?

  - by esac

  I am using the ADO.Net Entity Model. Everytime I create a record, I am calling _entity.AddToTable(object); _entity.SaveChanges(); What is the fastest way of inserting the data? Is there any "batch" or "SqlBulkCopy" option for entity model?

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• How can I automate the "generate scripts" task in SQL Server Management Studio 2008 ?

  - by Brann

  I'd like to automate the script generation in SQL Server Management Studio 2008. Right now what I do is : Right click on my database, Tasks, "Generate Scripts..." manually select all the export options I need, and hit select all on the "select object" tab Select the export folder Eventually hit the "Finish" button Is there a way to automate this task? Edit : I want to generate creation scripts, not change scripts.

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• JMF. Create new custom streamdatasource

  - by Afro Genius

  Hi there. I am looking to create a means of building a DataSource object (and hence a Processor) that gets data from a stream instead of a file, RTP, and so on. I am writing a module for a much larger application that is meant to transparently transcode audio data. Going through the JMF docs only specify how to create a source from file however I need to be able to create a source from a stream within my application. Any idea where I can start looking?

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• Poll C# app's memory usage at runtime?

  - by maxfridbe

  I have an app that, while running, needs to poll its own memory usage. It would be ideal if it could list out the memory usage for each object instantiated. I know this can be achieved by WMI, but I was hoping for something that doesn't rely on WMI.

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• It's possible to create variable to hold fields of class dynamically???

  - by yossharel

  hi all, In my 'Person' class, I have some fields like 'firstname','lastname','nickname' and so on. I want to write code to search dynamically, sometimes by 'firstname' and sometimes by 'nickname' field. The code I want to write, should be like this: Object someVariable = "firstname"; Person result = ListOfPerson.Where(p => p.someVariable = "exp").FirstOrDefault(); Can anyone Know if it's possible?

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• Does this data structure have a name? Sort of a "linked matrix"?

  - by Bob

  Let's say I wanted similar functionality to a doubly linked list but needed a matrix instead so that each node was structured like this: public class Node { Node Up, Down, Left, Right; object Value; } Is there a name for such a structure? I've looked through this Wikipedia listing of data structures but didn't see anything similar. Unless I just missed it.

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• Sorting a GridView

  - by Markus

  Hi, I have a question regarding GridView windows forms control. As a datasource, I am using a DataTable object. When the grid view is sorted, the DataTable's row indices are not sorted. In this way, when accessing the DataTable using indices from GridView, I get the unexpected rows. How can this situation be handled?

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• how to save a WPF image to a file

  - by tbischel

  in WPF, the System.Windows.Clipboard.getImage() function returns a BitmapSource object. As a newbie in WPF coming from a WinForms background, its not clear to me how to save this image to a file. What are the steps I must take?

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• How to report DataContext.SubmitChanges() progress with LINQ2SQL

  - by kzen

  If there is a foreach loop that contains DataContext.Customer.InsertOnSubmit(cust) for example: foreach (Object obj in collection) { Customer cust = new Customer { Id = obj.Id, Name = obj.Name ... }; DataContext.Customer.InsertOnSubmit(cust); } And outside of the loop there is a call to: DataContext.SubmittChanges(); Is there a way to obtain the SubmittChanges progress in order to report the progress back to the user (or a different approach without moving the SubmittChanges into the loop)?

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• How do I display a dynamically resized image in Kohana without saving it?

  - by Ygam

  I have an image path string stored in a database It goes like: img/uploads/imagename.jpg I have a controller: $this->image = new Image($wines->image) //this is assuming that I have a wines table with the image property $this->image->resize(60, 250, Image::AUTO) echo $this->image->render(); //the problem is nothing is rendered //Is there a better way of doing this? the image path that I am passing at the Image object //instantiation is the result of a query

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• [Iphone-Dev] Assigning values : difference between properties and class variables ?

  - by gotye

  Hey guys, I noticed that I rarely use properties, due to the fact that I rarely need to access my object's variables outside my class ;) So I usually do : NSMutableArray *myArray; // not a property ! My question is : even if i don't declare myArray as a property, does iphone make a retain anyway if I do myArray = arrayPassedToMe; I think so but I just wanted to confirm ;) Any thoughts welcome ! Gotye

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• Does a HashMap retain the order of its elements on the next read if it is constructed as a LinkedHas

  - by javanix

  Suppose I have a Java method that returns a HashMap object. Because a LinkedHashMap is a subclass of HashMap, I can return a LinkedHashMap from this method just fine. On the next "read" action (no adding/removing/modifying of K/V pairs), would iterating over the keys of the resulting method (which returns a HashMap) go in the same order as the originating LinkedHashMap, even though the HashMap lacks the key links?

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• How does .NET compiler compare two strings?

  - by Pankaj

  string a="I am comparing 2 string"; string b="I am comparing 2 string"; if(a==b) return true; else return false; How does a .NET compiler compare two strings? Does a string work like a struct(int)? string is class so a=b means we are comparing 2 object, but i want to compare 2 values.

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• Create a CBitmap from Resources ID

  - by Smashery

  I need to fill a CImageList with a number of bitmaps which are stored in separate bmp files (rather than as a single bmp with numerous parts). I assume I need to create a CBitmap so I can call the Add method of CImageList. So how might one create a CBitmap object using only MFC Resource IDs?

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• How can I use linq to initialize an array of repeated elements?

  - by Eric

  At present, I'm using something like this to build a list of 10 objects: myList = (from _ in Enumerable.Range(0, 9) select new MyObject {...}).toList() This is based off my python background, where I'd write: myList = [MyObject(...) for _ in range(10)] Note that I want my list to contain 10 instances of my object, not the same instance 10 times. Is this still a sensible way to do things in C#? Is there a cost to doing it this way over a simple for loop?

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• JLS: Item 54 - Why classes having thread pool should not implement serializable?

  - by Maddy

  From what I understand, the object state is just stored (values for fields, etc.), however, the execution context is anyways going to be lost. What's the point of this? What bad can happen if so? Note* this was taken from Effective Java By Joshua Bloch

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• Visual studio ORM designer option

  - by stackoverflowuser

  linq to sql visual studio Object-Relational designer generates C# entity class names same as the table names (except pluralizing it). so if the table name is authors it generates entity class with name "author". If the table name is Customers it generates class with name "Customer". Is there any option that can be set to make the designer generate entity class names as pascal cased. I am using VS 2010 if that makes any difference. Thanks.

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• how to copy a sqlite3 table to another file in python

  - by james

  hey i was wondering how i could make a copy of a sqlite3 table and save it to a seperate file in python. im confused as in python your sqlite3 object can only be connected to one database so how would i make it save to a seperate database? the reason i want to do this is in sqlite3 the database file size can never get smaller, and ive made alot of changes so i want just copy this table to another file which wont have all the extra empty space and then delete the origonal database thanks guys

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• C# Parsing html for general use?

  - by Wardy

  What is the best way to take a string of html and turn it in to something useful? Essentially if i take a url and go get the html from that url in .net i get a response but this would come in the form of either a file or stream or string. What if i want an actual document or something I can crawl like an xmldocument object? I have some thoughts and an already implemented solution on this but I am interested to see what the community thinks about this.

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• null from C# getting converted into 'NULL' in Sql Server

  - by Anand

  I am trying to insert NULL value in Sql Server if I have null value in corresponding C# String object like below : String Residence = xmlDoc.Descendants("Appointment").Single().Element("StateOfResidence") == null ? null : xmlDoc.Descendants("Appointment").Elements("StateOfResidence").Single().Value; I am using Entity framework for Database access. So if Residence is null, 'NULL' gets inserted into Database instead of NULL. How can insert NULL for null ?

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• TextBox and Thread

  - by gloris

  Why doesn't this work? The program stops on: this.textBox1.Text = "(New text)"; Thread demoThread; private void Form1_Load(object sender, EventArgs e) { this.demoThread = new Thread(new ThreadStart(this.ThreadProcUnsafe)); this.demoThread.Start(); textBox1.Text = "Written by the main thread."; } private void ThreadProcUnsafe() { while (true) { Thread.Sleep(2000); this.textBox1.Text = "(New text)"; } }

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• Counting words in a collection using LINQ

  - by icemanind

  Guys, I have a StringCollection object with 5 words in them. 3 of them are duplicate words. I am trying to create a LINQ query that will count how many unique words are in the collection and output them to to the console. So, for example, if my StringCollection has 'House', 'Car,'House','Dog', 'Cat', then it should output like this: House -- 2 Car -- 1 Dog -- 1 Cat -- 1 any ideas on how to create a LINQ query to do this?

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• What "exotic" language feature do you use every day?

  - by fmark

  For most programmers using procedural or object-oriented languages there is a language-feature lowest common denominator: variables, procedures, standard control structures, and classes. However, almost all languages add features on top of this. Recent C# versions have LINQ and delegates. C++ has template metaprogramming. Java has annotations. What features such as these do you use every day?

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• Map entries become vectors when piped thru a macro

  - by Gavin Grover

  In Clojure, a map entry created within a macro is preserved... (class (eval `(new clojure.lang.MapEntry :a 7))) ;=> clojure.lang.MapEntry ...but when piped thru from the outside context collapses to a vector... (class (eval `~(new clojure.lang.MapEntry :a 7))) ;=> clojure.lang.PersistentVector This behavior is defined inside LispReader.syntaxQuote(Object form) condition if(form instanceof IPersistentCollection). Does anyone know if this is intended behavior or something that will be fixed?

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• "using" keyword in java

  - by DrDro

  In Java is there an equivalent to the C# "using" statement allowing to define a scope for an object: using (AwesomeClass hooray = new AwesomeClass) { // Great code } This has probably allready been asked but the keywords make it difficult to find a relevant question.

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