lets say there are 3 int ncount variable in every method private void x_method1() { int ncount = dv.length; } private void x_method2() { int ncount = drarr.length; } private void x_method3() { int ncount = dr.length; } Is it best to do this? and why? int m_ncount; priva...more >>

I need to enter null value from combobox to business object property. My combobox datasource does not contain ValueMember with null value. So I tried to create combobox which stores null to bound object when text is deleted. However bound object contains old value in this case. To reproduce...more >>

I have a string field and a decimal fields and was wondering what the best way to check for numeric is? I have to do something like: If (myAmount is numeric) { total += myAmount; } Thanks, Tom ...more >>

Was looking through a C# book today and come across something like this: class Circle... Circle c = x Circle d = c My understanding is: o Both c,d contain the same value x o But this is the exact same value of x o Assignment d=c would do the same o If I change part of c, then d also ...more >>

Is there a difference between datarow.length == 0 and datarow == null in terms of performance?...more >>

I'm using the ajax control toolkit... for 2 cascading dropdown menus. The dropdowns call the webservice to get their values and everything works fine, but I want to be able to pass the end user's web browser to the app file of the web services. I want to use the global resources, but it always ...more >>

Hi have data in a hash table that I copy into an array list. The data is in the form name(string) number(string)-because it can have some letters in it user(string) starttime(datetime) endtime(datetime) I want to sort it by name and then starttime,could you do this from the arraylist? ...more >>

Hi, Is it possible to declare multiple arrays of the same name. Eg if I tracking share prices and I use a array STOCKPRICE. Im adding a new tabpage for each stock I want to follow. So today I follow ony one so I use STOCKPRICE. Next day I want to follow 3 so I want to use STOCKPRICE, STOCKPRICE(...more >>

Somewhat I remember I used to be able to do sth like the the following double[,] values = (double[,])excel_range.Value2 But it seems to be not working any more, throwing an exception "cannot convert System.Object[,] to System.Double[,]" Of course, I can do iteration and, as a bottom line, ...more >>

..Net 2.0 VStudio 2005 C# I know this is going to seem like a strange question, as even I am sure I have missed something - but I cant find it. I want a simple event on any of the objects (BindingSource, DataSet, DataTable) that fires when data in a bound control changes. Eg someone t...more >>

Hi Ive added a usercontrol to a form. When I hover over the control with the mouse, it shows the timer icon, but my control is just a layout and Im not actively updateting it. If I come of the control ten I have the arrow. Im assuming that the timer meens that somethings actively happening withi...more >>

Hi, I am trying to implement the following: connect to data source, run stored procedure, store data in data table. This all works fine, data table is accessed and the rows and columns are writing their data into a string. What I want to do is put XML data tags around the returned data, if I ...more >>

Hello, I would like to know how to do pooling of some external event (not via callbacks because the event won't come from c# module) in once in a while according to what user will decide? How to implement this? Thank u ! *** Sent via Developersdex http://www.developersdex.com ***...more >>

I'm just playing around, to confirm my mental picture of what is happening in CSharp. Looks like I got the wrong mental picture, because I thought this would work. I created a class, MyDGVR, which extends the DataGridViewRow, and just added a little functionality by adding a property called N...more >>

I seem to get two file watcher changed invocation for a file change. I thought may be the cause is third party software effect the change I checked the general attributes of the files, it clearly shows the original created date and new modified date time.. I also tried notepad on the file ...more >>

Hi I want to search all ms word documents' contents in a fold by search patterns, like searching 'Wind' and 'Rain' not 'Hail'. Then return all file names that meet the searching criterion. Thanks Peter ...more >>

Hello Using c#, I've got a struct, in which I use the NEW keyword and make a reference to a class, so now I've got a struct on the stack, that contains a reference to the HEAP. Is there a way in VS2005 when I'm debugging to see what type of memory is getting used, stack versus heap? T...more >>

Hi Ive created a usercontrol containing a graph and label. What setting do I use so when I maximise the window, the control auto scales also. Regards Robert...more >>

Hi, When adding roles to the GenericPrincipal, is this a per request object or is it in session? In my global.asax.cs , which event should I be adding the roles to the GenericPrincipal?...more >>

Hello, Can we see all the source code for the built-in membership provider somewhere? It would make customizing it a little easier for me....more >>

Dear All, I must write a client program in C# which will communicate with a switch throught telnet. When I create a socket connection on port 22, the switch responds with some text and at the end with some unreadable characters. I found out that the operating system of the switch is redhat...more >>

Someone in a post mentioned the Oracle Data Provider. Can anyone tell me about it? I'd like to know the following: 1. Is it much faster than OleDB? 2. Is it essentially the same approach, eg, new Connection, new Command, set CommandText, ExecuteDataRead(), cursor through a DataReader, a...more >>

Good noon, community! Please help me solve my problem. I need use Microsoft(r) Virtual Earth in the my application. How can i do it? Thanks in advance! ...more >>

I am working on my first VS2008 project and using DataSet's, which I am not super familar with. I have a user table in the data set that has a first name and last name, I would like to add a computed field/ column that is "<fname> <last name>". In .Net 3.5, what is the best way to do this? ...more >>

Hi All, I'd like to start up a personal coding for fun project which performs some desktop movement recording/(then)streaming. Basically all i want to do is to have few users on LAN to be able to see what I am doing on my desktop sort of like MS Live meeting but this is for LAN. I did so...more >>

I need to create Factory() method which creates entity objects from string type names ( e.q. "Customer", "Product" ) for 3.5 WinForms Linq application. I tried code below but got error shown in comment. How to fix this code? How to create constructor from string type name and call it usin...more >>

Hi if I am developing a "class library" which contains some classes which should be exposed to the outside world, and other classes which I really would rather have "private" to my library (helper/utility classes), how do I achieve this? Obviously public classes can just be declared "pub...more >>

Hello I am getting some odd answers when i use doubles in c# 0.55-0.5 = 0.050000000000000044 why am i not getting 0.05...more >>

Sincerly is a little bit complicated to explain to you what I have in my mind, but I will try: Above all the problem is the type of data that I want to passe between these two applications. The complete application that I want to create consiste of two applications: - the console developped ...more >>

ADO has GetChunk & AppendChunk, features that are not supported by ADO.NET. Is there a workaround in ADO.NET? I am trying to write large files to LOB fields in a database table....more >>