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  • KeyDown event is not Working for Arrow keys ,Home , End ,Pageup,Pagedown and other similar keys in s

    - by Subhen
    Hi , I want to over ride the selection behaviour of listbox Items. We can traverse through listbox items using Up and Down arrows where as I wan to traverse the list using Left and Right arrow keys. While I am trying to add the key down event for Listbox, It shows almost all key presses except for Arrow Keys, Home, End and Similar keys. I have the following Code: private void listArtist_KeyDown(object sender, System.Windows.Input.KeyEventArgs e) { if (e.Key.ToString() == "Enter") { //Go to Some Page } else { MessageBox.Show(e.Key.ToString()); } } I am clue less about it. Please help. Thanks, Subhen

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  • How do I escape reserved words used as column names? MySQL/Create Table

    - by acidzombie24
    I am generating tables from classes in .NET and one problem is a class may have a field name key which is a reserved MySQL keyword. How do I escape it in a create table statement? (Note: The other problem below is text must be a fixed size to be indexed/unique) create table if not exists misc_info ( id INTEGER PRIMARY KEY AUTO_INCREMENT NOT NULL, key TEXT UNIQUE NOT NULL, value TEXT NOT NULL)ENGINE=INNODB;

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  • C# new class with only single property : derive from base or encapsulate into new ?

    - by Gobol
    I've tried to be descriptive :) It's rather programming-style problem than coding problem in itself. Let's suppose we have : A: public class MyDict { public Dictionary<int,string> dict; // do custom-serialization of "dict" public void SaveToFile(...); // customized deserialization of "dict" public void LoadFromFile(...); } B: public class MyDict : Dictionary<int,string> { } Which option would be better in the matter of programming style ? class B: is to be de/serialized externally. Main problem is : is it better to create new class (which would have only one property - like opt A:) or to create a new class derived - like opt B: ? I don't want any other data processing than adding/removing and de/serializing to stream. Thanks in advance!

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  • Build comma seperated string from the struct in C#

    - by acadia
    Hello, I have the following struct in C# class public struct Employee { public const string EMPID = "EMP_ID"; public const string FName = "FIRST_NAME"; public const string LNAME = "LAST_NAME"; public const string DEPTID = "DEPT_ID"; } Is there an easy way to build a string as follows const string mainquery="INSERT INTO EMP(EMP_ID,FIRST_NAME,LAST_NAME,DEPT_ID) VALUES(:EMP_ID,:FIRST_NAME,:LAST_NAME,:DEPT_ID)" Instead of doing as follows and then concatenating it. const string EMP_COLS= EMPLOYEE.EMPID + "," + EMPLOYEE.FNAME + "," + EMPLOYEE.LNAME + "," + EMPLOYEE.DEPTID; const string EMP_Values= EMPLOYEE.EMPID + ":" + EMPLOYEE.FNAME + ":" + EMPLOYEE.LNAME + ":" + EMPLOYEE.DEPTID;

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  • Receiving integers, but also want to test for char.

    - by Wayne Haworth
    Say I am looking to receive a series of numeric values and read them into an int, but I also want to test if the user hit key 'x'. I am sure I am missing something obvious, and have tried a few things but seem to be stuck. This is what I have so far... cout << endl << "Enter key (or 'x' to exit): "; cin key; if (key == 'x') { cout << "exiting";} // continue on...

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  • mysql codeigniter active record m:m deletion

    - by sea_1987
    Hi There, I have a table 2 tables that have a m:m relationship, what I can wanting is that when I delete a row from one of the tables I want the row in the joining table to be deleted as well, my sql is as follow, Table 1 CREATE TABLE IF NOT EXISTS `job_feed` ( `id` int(11) NOT NULL AUTO_INCREMENT, `body` text NOT NULL, `date_posted` int(10) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ; Table 2 CREATE TABLE IF NOT EXISTS `job_feed_has_employer_details` ( `job_feed_id` int(11) NOT NULL, `employer_details_id` int(11) NOT NULL, PRIMARY KEY (`job_feed_id`,`employer_details_id`), KEY `fk_job_feed_has_employer_details_job_feed1` (`job_feed_id`), KEY `fk_job_feed_has_employer_details_employer_details1` (`employer_details_id`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; So what I am wanting to do is, if the a row is deleted from table1 and has an id of 1 I want the row in table to that also has that idea as part of the relationship also. I want to do this in keeping with codeigniters active record class I currently have this, public function deleteJobFeed($feed_id) { $this->db->where('id', $feed_id) ->delete('job_feed'); return $feed_id; }

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  • Passing parameters among views in a navigation frame INSIDE a custom control

    - by NetWriter
    I created a silverlight 3 application with a navigation frame and 3 views: search, add and edit. I used the app file to pass parameters among the 3 pages, eg: ((App)Application.Current).SNIPSELECTED = currentSnip; Then in the receiving page: currentSnip = ((App)Application.Current).SNIPSELECTED; currentSnip is a SnipItem object: public class SnipItem { public string itemID {get;set;} public string category {get;set;} public string itemDescription {get;set;} public string codeSnip {get;set;} } This worked fine until I decided to make this entire application into a user control and put that inside a second silverlight application with its own navigation frame and app file. The app files are getting confused. The first app file with all my parameter passing is not being read. I know how to pass a simple parameter between views in the first application without the app file (in a query string), but how about these custom types like my currentSnip above?

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  • How to make a copy of a char and not a reference in C++

    - by Phenom
    If I declare a function like this: string hash (char* key) then any change I make to key will also change it's value when the function exits, correct? I want to make a copy of it in the function so that I can safely change it without changing the original value. I tried this, but it doesn't work. string temp = key; How can it be done?

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  • How do i generate random data with RSA?

    - by acidzombie24
    After loading my RSACryptoServiceProvider rsa object i would like to create a key for my AES object. Since i dont need to store the AES key (i only need it to decrypt on my prv side) i figure i dont need to store it and i can generate it with my public key. I thought doing rsa.Encrypt(byte[] with 4 hardcoded bytes); would generate the data i need. It turns out everytime i call this function even with the same data i get different results. So theres no way for me to recreate the AES key if its different everytime. How can i generate data with RSA in a way that i can recreate anytime i need?

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  • c# class design - what can I use instead of "static abstract"?

    - by Ryan
    I want to do the following public abstract class MyAbstractClass { public static abstract int MagicId { get; } public static void DoSomeMagic() { // Need to get the MagicId value defined in the concrete implementation } } public class MyConcreteClass : MyAbstractClass { public static override int MagicId { get { return 123; } } } However I can't because you can't have static abstract members. I understand why I can't do this - any recommendations for a design that will achieve much the same result? (For clarity - what I am trying to do is provide a library with an abstract base class but the concrete versions MUST implement a few properties/methods themselves and yes, there are good reasons for keeping it static.)

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  • PHP : apc_store doesn't work as intended

    - by Industrial
    Hi everyone, I have started to try APC to store some specific data on each webserver as an complement to memcached. However, the following code piece is giving me headaches: echo apc_store('key', 'value'); echo apc_store('key', 'newvalue'); echo apc_fetch('key'); Result: value Why is apc_store not working as properly?

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  • how do i insert into two table all at once in a stored procedure?

    - by user996502
    Doing a project for school so any help would be great thank you! I have two tables how do i insert into two tables? so both tables are linked. First table called Customer with primary key called CID that auto increments CREATE TABLE [dbo].[Customer]( [CID] [int] IDENTITY(1,1) NOT NULL, [LastName] [varchar](255) NOT NULL, [FirstName] [varchar](255) NOT NULL, [MiddleName] [varchar](255) NULL, [EmailAddress] [varchar](255) NOT NULL, [PhoneNumber] [varchar](12) NOT NULL CONSTRAINT [PK__CInforma__C1F8DC5968DD69DC] PRIMARY KEY CLUSTERED ( And a second table called Employment that has a foreign key linked to the parent table CREATE TABLE [dbo].[Employment]( [EID] [int] IDENTITY(1,1) NOT NULL, [CID] [int] NOT NULL, [Employer] [varchar](255) NOT NULL, [Occupation] [varchar](255) NOT NULL, [Income] [varchar](25) NOT NULL, [WPhone] [varchar](12) NOT NULL, CONSTRAINT [PK__Employme__C190170BC7827524] PRIMARY KEY CLUSTERED (

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  • How do i escape reserve names in a column? MySQL/Create Table

    - by acidzombie24
    I am generating tables from classes in .NET and one problem is a class may have a field name key which is a reserved mysql keyword. How do i escape it in a create table statement? (Note: The other problem below is text must be a fixed size to be indexed/unique) create table if not exists misc_info ( id INTEGER PRIMARY KEY AUTO_INCREMENT NOT NULL, key TEXT UNIQUE NOT NULL, value TEXT NOT NULL)ENGINE=INNODB;

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  • Adding an element to a multidimensional array

    - by stef
    How can I loop through the array below and an element per array, with key "url_slug" and value "foo"? I tried with array_push but that gets rid of the key names (it seems?) Doing a foreach($array as $k = $v) doesn't do it either, I think. The new array should be exactly the same only having 4 elements per array instead of 3, with the key / values above. Array ( [0] => Array ( [name_en] => Test 5 [url_name_nl] => test-5 [cat_name] => mobile ) [1] => Array ( [name_en] => Test 10 [url_name_nl] => test-10 [cat_name] => mobile ) [2] => Array ( [name_en] => Test 25 [url_name_nl] => test-25 [cat_name] => mobile ) ) EDIT: full working solution. A little more complex than originally described foreach ($prods as $key => &$value) { if($key == "cat_name") $slug = $value['cat_name']; $url_slug = $this->lang->line($slug); $value['url_slug'] = $url_slug; }

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  • How to use multiple restrictions in C# Generics properly?

    - by plouh
    I am attempting to bind c# generics to a class and an interface like this: public class WizardPage<T> where T : UserControl, IWizardControl { private T page; public WizardPage( T page ) { this.page = page; } } And use it with this: public MyControl : UserControl, IWizardControl { //... } Somehow C# doesn't seem to be able to decide that MyControl is a proper instance of T as public class Wizard<T> where T : UserControl, IWizardControl { private WizardPage<T> Page1; public Wizard( MyControl control ) { this.Page1 = new WizardPage(control); } } fails with error The best overloaded method match for 'Controls.WizardPage.WizardPage(T)' has some invalid arguments Am I doing something wrong or is this just not going to work?

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  • Problem in populating a dictionary object using Enumerable.Range() (C#3.0)

    - by Newbie
    If I do for (int i = 0; i < appSettings.Count; i++) { string key = appSettings.Keys[i]; euFileDictionary.Add(key, appSettings[i]); } It is working fine. When I am trying the same thing using Enumerable.Range(0, appSettings.Count).Select(i => { string Key = appSettings.Keys[i]; string Value = appSettings[i]; euFileDictionary.Add(Key, Value); }).ToDictionary<string,string>(); I am getting a compile time error The type arguments for method 'System.Linq.Enumerable.Select(System.Collections.Generic.IEnumerable, System.Func)' cannot be inferred from the usage. Try specifying the type arguments explicitly. Any idea? Using C#3.0 Thanks

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  • Custom Global Hotkey Win32 C - Problem

    - by UK
    Hello , I am trying to get the user defined global hot key for my application. Here is my application code, user.rc CONTROL "", IDC_MHOTKEY, HOTKEY_CLASS, WS_TABSTOP, 91, 86, 68, 14 function.cpp WORD wHotKey = SendDlgItemMessage(hwnd, IDC_MHOTKEY, HKM_GETHOTKEY, 0, 0); GLOBAL_HOTKEY= wHotKey; RegisterHotKey ( NULL, TURN_OFF_HOTKEY, HIBYTE(LOWORD(wHotKey)) , wHotKey); main.cpp if ( messages.message == WM_HOTKEY && ( HIWORD ( messages.lParam ) == GLOBAL_HOTKEY) ) alert("Coming only for Single Key"); This code works well, Only If the user selects a single key and not working when he selects multiple key combined like CTRL+F8. I know I am doing something wrong here. Really appreciate If someone guide me in a right path.

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  • PHP : flatten array - fastest way?

    - by Industrial
    Is there any fast way to flatten an array and select subkeys ('key'&'value' in this case) without running a foreach loop, or is the foreach always the fastest way? Array ( [0] => Array ( [key] => string [value] => a simple string [cas] => 0 ) [1] => Array ( [key] => int [value] => 99 [cas] => 0 ) [2] => Array ( [key] => array [value] => Array ( [0] => 11 [1] => 12 ) [cas] => 0 ) ) To: Array ( [int] => 99 [string] => a simple string [array] => Array ( [0] => 11 [1] => 12 ) )

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  • onUpdate in MySQL means?

    - by ajsie
    i know that if you create a foreign key on a field (parent_id) in a child table that refer to a parent table's primary key (id), then if this parent table is deleted the child class will be deleted as well if you set onDelete to cascade when creating the foreign key in the child class. but what happens if i set it to onUpdate = cascade?

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  • structure in .NET

    - by redpaladin
    My problem is very simple.. My problem is to send a structure beetween a program in C to a C# program.. I made a struct in C#: public struct NetPoint { public float lat; // 4 bytes public float lon; // 4 bytes public int alt; // 4 bytes public long time; // 8 bytes } Total size of the struct must be 20 bytes When i do a sizeof() of this struct System.Diagnostics.Debug.WriteLine("SizeOf(NetPoint)=" + System.Runtime.InteropServices.Marshal.SizeOf(new NetPoint())); The debug console show : SizeOf(NetPoint)=24 But i expected to have 20 bytes ? Why do I have a difference ? Thank you in advance

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  • Thread toggling

    - by sid
    Hi all, In Ubuntu, I am running 2 'C' applications, When I press key up/down the applications are alternatively getting the events. What might be the problem/solution? Ex: I have 'A application' and 'B application', I launch 'A application' and press the key up/down its working fine. If I simultaneously launch 'B application' and focus is on 'B application' then pressing key up/down will toggle between 'A application' & 'B application' so 2 times I have to press the key to move on 'B application'(focus is on 'B application'). 'A application' and 'B application' are threads. Thanks in advance-opensid

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  • Generated PersonController expects Authority to contain word ROLE

    - by Chip L
    I'm brand new to acegi and relatively new to Grails. I just followed the tutorial to set up a new role and a new user. Every time I saved the user (with a role checked), it saved the user information fine, but not the role associated with the user. I finally dug into the controller code that was generated, and noticed this: private void addRoles(person) { for (String key in params.keySet()) { if (key.contains('ROLE') && 'on' == params.get(key)) { Authority.findByAuthority(key).addToPeople(person) } } } So to be sure I was interpreting it correctly, I added the word ROLE to my authorties, and it worked like a charm. Am I missing something obvious, is this a bug, or.......? The examples showed simple role names like "user" or "manager".

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  • Multiple WCF Services implementing same Service Contract interface

    - by andrewczwu
    Is it possible for multiple wcf services to implement the same service contract interface? What I want to do is allow for a test service to be interchangeable for the real service, and to specify which service to be used in the configuration file. For example: [ServiceContract] public interface IUselessService { [OperationContract] string GetData(int value); } Test implementation public class TestService : IUselessService { public string GetData(int value) { return "This is a test"; } } Real class public class RealService : IUselessService { public string GetData(int value) { return string.Format("You entered: {0}", value); } }

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