what is the difference between the two forms of converting to integer from string string strVal = "10"; Convert.ToInt32(strVal); Int32.Parse(strVal); which method is more efficient in terms of performance? ...more >>

Hi guys, Maybe someone can explain thisi have this enum: public enum LimitType : int { BottomLimit, TopLimit, Limit } In another class i read values from my db and cast them to the enum, where my db id is 1, it will match the enum that is first and...more >>

I can't figure out why VS2005 has a problem with the following definition Regex rx = new Regex(@"('|\")"); //here put squiggle under "); what I think I am writing is a regular expresion that will give me all the matches for single or double quotes and remember the match so that I can t...more >>

Has anyone heard of an open-source .NET engine that calculates the winning and losing percentages of hands? Regards, Chris ...more >>

When reading about generics, one benefit is to have different implementations depending on reference/value type. As far as I know, List<T> does not box/unbox ValueTypes. How do they do that? A lot of if/else statements in the list? Or can you do something like class MyList<T> where T : ...more >>

Hi, I use the following statement to get a range in Excel worksheet: Excel.Range oRange = oSheet.get_Range("A1", "A10"); How can I get the entire column? Thanks....more >>

Hello everyone, I encountered an interesting bug in a program I was writing that was caused by the following unexpected behaviour. Basically, creating a new Stack object from another results in a reversal of the item ordering. Example: Stack<string> a = new Stack<string>(); a.Push("a"); a.P...more >>

I bought a USB IR reciever and installed the driver. The developer kit gives a DLL with the following information: C++ Builder / Microsoft Visual C++: #ifdef __cplusplus extern "C" { #endif int __stdcall DoGetInfraCode(uchar * code, int extra, int * codeLen); #ifdef __cplusp...more >>

Hi all, I recently built a small prototype smart device project with C# under VS2005 SP1, and was surprised to see that a 'trivial' statement did not work to be able to verify the existence of a file that I had created i.e. System.IO.File.Exists(filename) I verified the existence of th...more >>

Hi All, I am new to .Net and Compact Framework. So I have a really basic question for you all. I am building an application in C# for Windows Mobile 5.0 in VS2005 CF2.0 I would like this application to have some customizable features with out having to recompile. ...more >>

Hello, I sure this is simple, but I cannot see my way through it. I simply want to add the boolean parameter to the sql string - but can't, as I get the error message below. Help much appreciated. MyConnection.Open(); SqlCommand mySqlCommand = new SqlCommand( ...more >>

I'm new to c# and want to know the preferred way to reverse a Boolean value. for example: in vb I can do this: dim flag as Boolean flag=not flag Is there something similar in c# or do I need to use and if statement? Thanks. -- moondaddy@noemail.noemail ...more >>

I have a windows form, there are button , textbox label etc. controls on it. and i can programmatically get each of their names. and i also have a printPreviewDialog on a form. I cannot get it through loop. i know that it does not have an appearance. so - how can i get it programmatically ...more >>

Hi A common situation is a database using an ID number for a table and the front end code needing to read this same id and store it back when used in foregin key tables. For example: database table RoomType ------------- RoomTypeId RoomType and assume values RoomType ------...more >>

Hi, I am wondering if C# always assumes small-endian byte order, if not, = how should I test the endianess of the platform, there doesn't seem to = be a way to check as pointers are implicit (as opposed to being explicit in = C)? Thanks jz...more >>

Hello , I am developing an application which it contains one MenuStrip and ToolStrip. now i have to replace these controls with some other controls. is dotnet providing any alternate controls to this . I am dynamically adding the toolstripitems to the toolstrip, Help me. Thanks c...more >>

I usually do singleton implementatios like this: static readonly myClass instance = new myClass (); public static myClass Instance { get { return instance; } } static myClass(){} but in this situation my constructor has variables an...more >>

Hello! I use VS 2003. I just wonder how do I start an exe from another exe. //Tony ...more >>

All example codes I found with DirectX or XNA access the joystick by pulling... ?? is there anybody who has been able to use the joystick with events (with C#)?? Is it possible? If it is not possible, I only want to know it. In that way I would tell it inmediately to my boss... thank you ...more >>

Hi All, I have a total new server with win2k3 and .net framework 2.0. I have copied an exe which I had built on my machine (.net 1.0) works super on my local box. I need to debug this exe on the server..I cannot install Visual Studio on the server.How can I debug this exe? TIA PS: The ca...more >>

Hi I want to be able from my csharp button to start an application ( which I can do) and then somehow send a message to the win32 application that says "press the button" The win32 application ( borland app) has a button on it that I need to click in order for it to start correctly. Is ...more >>

I have an Angle class that I store angles in. It's basically just a bunch of fancy functions for manipulating a double. It has implicit casts for converting to/from double. Due to the project structure and where it stores the preferred SI units for display, I wanted to have the TypeConverter in ...more >>

I have a PropertyGrid question. My task is to replace a legacy dialog box presentation with a modern one. The dialog itself allows the user to set [key/value] configuration settings in our application, so it seems to me that a PropertyGrid is a perfect modern replacement. I won't bore you ...more >>

When a Microsoft help topic says to use this code, where woudl you place it? Sorry, I know its a lame questions. I am a beginner. [TypeConverterAttribute(typeof(DataGridViewRowConverter))] public class DataGridViewRow : DataGridViewBand ...more >>

I dont know what happend to my tool box icons, but most of them seam to have taken a hike. Installing frameworks 3 didnt help bring them back. Where in VS would I set the path for them? And what is the typical location for them?...more >>

Dear All, I have create an excel (COM Object) using this code Excel.Application xls = new Excel.Application(); but I can not remove it from memory although I have using close and quit wb.Close(false, false, 0); xls.Quit(); If I open task manager there is excel.exe. If I run multipl...more >>

Hi, I'm trying to find a method to save bmp, jpg and png files as ico files, 16x16 size. I have managed to convert and save bmp files to icon, but only in 32x32 size. I can't figure out how to save it in the size: 16x16, and I hope someone could help me out a bit? Code that saves from bmp to i...more >>

What method will return which row is currently being edited in a grid?...more >>

I need to get the time from NOW and get how many milleseconds until 1:00am for my countdown timer please. Any help is appreciated. Thanks, Trint ...more >>

Hi to all, I have a file that when I try to open gives the exception message "Access to path c:\data\abc.mpg is denied". As soon as I try to do file = new FileStream(filename, FileMode.Open); the exception is raised. I have rebooted my machine to make sure that nothing is locking the fi...more >>

Hello! I have VS 2003 which use .NET 1.1 but I have download and installed .NET 2.0 from MS but some files are missing. The download and installation was successful. The main reason for me to use .NET 2.0 is to be able to use the ClickOnce technology that exist in VS 2005 but according to an...more >>

I'm creating a UserControl that uses a LinkLabel. For reasons that I won't bore everyone with, I don't want the LinkLable to show the default hand cursor when the mouse enters the control. Should be a simple setting on the LinkLabel.Cursor property, right? Not so simple. I set the property,...more >>

Hi All, I am using VS2005/wse3.0 in winform application and using web services. When I try to write a large file say about 5 to 10 MB file (large for me) I get an error something like the following; I found bunch of postings on this. but they are old and for older WSE. I am able to download...more >>

I wrote the plea below several days ago and got some good help. Thanks to Robin, who responded and helped me solve a real hair-puller for me. Now I have a different question: the changes are appearing in my dB, and all are ok except my dates don't go in. I have tthree date fields, and all of t...more >>

hey all, what does the @ symbol in front of a string mean? @"mystringvalue" thanks, rodchar...more >>

Contrary to what the title might make you believe; this is not a n00b question. I recently came across a problem with using a property which made me question the way I use/see properties in general. The problem was with changing item values in a DataRow. The dotNET DataRow class has a ItemVal...more >>

situation: when i click capture button i need to capture a weight everytime i hit it (5 fields to fill) pluse incriment a counter to let me know which field to fill. I need a code skelaton. -- i have no experience be kind...more >>

Hi, I would like to get information from remote computer. I can't use Wmi because I don't have the rights on every computers connected to the network. I use Netbios protocol to know computer name and Mac address. Do you know other solutions ? Thank for your help. ...more >>

I'm a bit confused hopefuly someone can help. I have a text file which stores names and an associated number. Each line in the text file represents one person, and a semicolon ' ; ' seperates person from associated number. The associated number is used as a que position reference (i.e. the ...more >>

m using this code :........................... ======================================================================= OleDbConnection con =new OleDbConnection (@"Provider=Microsoft.Jet.OLEDB.4.0; Data Source = C:\Documents and Settings\ic411242\My Documents\db2.mdb"); con.Open (...more >>

I have a .net exe a client has given to me to modify. Unfortunately client claims source code was accidentally lost, however they do indeed own the app. App is dot net I ran ildasm.exe and did indeed get something I could follow. What I need is a good decompiler to actually produce something I ...more >>

The WebBrowser control is described as exposing numerous public mouse events. See: http://msdn2.microsoft.com/en-us/library/ayestehw.aspx. many of the event are described as: "This event is not supported by this control. (inherited from WebBrowserBase)". Does this mean that I can't access t...more >>

I have searched a lot but is unable to find a sample code for developing CAD like application where we can drag circles, square etc. from tollbar connect them with line etc. If anyone of you are able to find please provide me the link for the same....more >>

I have searched a lot but is unable to find a sample code for developing CAD like application where we can drag circles, square etc. from tollbar connect them with line etc. If anyone of you are able to find please provide me the link for the same....more >>

Hi, I am working on program to cop data from the main database (Oracle or SQL Server) to a local Access-database used on laptops. The databse is quite large so the routine nedds to be fast. The stripped down code looks like this: OleDbCommand cmd = new OleDbCommand("SELECT * F...more >>

Hi, im trying to do something and just been caught off guard. I want to implement an interface but only for certain class, but of course when i derive from this base class the derived class also inherits the interface. public class Base : IGetType { protected byte m_type; ...more >>

I have a comboBox. evevry time I selected an item in the comboBox, the dropdownlist resized. It flashed before disapeared. In my code, I handled the comboBox SelectionChangeSubmitted event, and in the event handler, I cleared the items in comboBox and refill it. Who knows why it flashed ? Is t...more >>

Hi Group, I have a little confusion over the use of static class in C#. I have a static method in my static class. This method reads an xml and returns a collection of objects. This collection of objects can be different for different users. This method uses some non-static variables which ar...more >>