Can someone help me with the formula(s) to calculate the RGB components for a gradient from green to red? I'm trying to display a nice graphic with a gradient that reflects the profit or loss and I can calculate the value of red or green at each point based on the value of the profit or loss, bu...more >>

I have a following code in HttpRequestListener's ProcessRequest method which is a Windows Console Application. I'm trying to read html page with browser (Opera) and html file contains tags to include Java Applet jar too, for (int i = 0; i < numRequestsToBeHandled; i++) { HttpListene...more >>

Hi everyone, Can anyone tell me if there is a standard way of detecting an error in a process that I've started using the .net framework's System.Diagnostics.Process class? I need to regularly call a secondary application but be able to tell if a problem has occured with it and log the e...more >>

I had develop an xml schema for checking type of data as <xs:simpleType name="O_FMExchangeRate" xmlns:xs="http:// www.w3.org/2001/XMLSchema"> <xs:restriction base="xs:float"> <xs:minExclusive value="0.0000001"/> <xs:pattern value="d(0)|\d{1,5}|\d{1,5}\.\d{1,7}|\.\d{1,7}| \d{1,5}\...more >>

I'm basicly a Vb6 dev but i actually have to play around with c# alot more. I have studied C# at school at beginner/intermediate level so i understand the bases. I'm working on a project that i need to open windows explorer on a folder X. That i managed to do it with : System.Diagnostics.Process...more >>

If I get an object with its type declared as Sysem.Array(not in the explicit form like 'ElementType[]' in C#), then how to retrieve the exact element type of that array? ...more >>

Dear all, I had used partial class to extend typed dataset(ex. add a method to TypedDataTable) in my windows-base applications and it works well. But when I try it in a web services project, those extend functions which is visible within web project, but invisible to client.(I create a windo...more >>

Hello, I've come here to get some advise from the experts. Currently I am tasked with modifying a web service that currently supports one product to support multiple products. It needs to be backwards compatible so other products still work with the same method calls and the new products need...more >>

Here's the scenario: I have a form, with an unknown dataset (could be ObjectDataSource, DataTable, etc.) which populates a DataGridView. I need to cache prior values from a row on the DataGridView before updating them with current values from the DB, and then do some specific things if part...more >>

Hi all, Is there some way to execute an external process that will execute asynchronously and then notify me when it's completed? Any sort of a callback or class member that I could check periodically to see if it's still running would work. The reason for this is that the external process wi...more >>

Lets say I want to have a sparse lookup by two int values to a string value... I can do it by: Dictionary<int, Dictionary<int, string>> d = new ... d[4953][1344] = "hello"; This is fine if there is only two levels... but I have a situation where I want to declare one with more levels, ...more >>

Performance in our WCF application is very poor now that we've added a number of records to tables (not an unrealistic number, though). After doing that, we did get "max message size" errors to I bumped that number to 99999999 (see below). Can anyone please tell me if (1) my config files b...more >>

Hello! I'm using .NET 2005 (C#) and I've come across using statement. It seems ok, I was just wondering one thing. What if I returned object inside using statement using RETURN directive. Is returned object valid or not? For example: public FileStream Func1() { ... using (FileStre...more >>

I'm attempting to write a function that grabs a page from a web server and reads it into either a string or a HTML or XML object that can be parsed to retrieve the desired bits of data. My immediate use is in an ASP or ASP.NET page, but I have a need for the same sort of functionality to autom...more >>

I need to capture the HTML's code for any page in the web. Anyone can help me? thks...more >>

The .NET Framework provides us with built-in event handlers: System.EventHandler and the generic System.EventArgs<TEventArgs> It appears that those built-in event handler delegates are just a convenience for us, as we can use those instead of creating a new delegate for every event ...more >>

The following code: enum Foo { one, two }; int Bar(Foo foo) { switch (foo) { case Foo.one: return 7; case Foo.two: return 4; } } gives a compilation warning "not all paths return a value" surely this is spurious though? - there is no path I c...more >>

Hi, I have a problem sending mails with the SmtpClient class. It's strange - after I boot the pc and start the program I can send mails many times. After I close the program and start it again it sometimes works too, but often does not. If it does not, he will never - until the next reboot....more >>

I try to open a log file that is logging infomation by another process: StreamReader sr = File.OpenText(filePath); I got the exception message: The process cannot access the file 'c:\temp\myLog.txt' because it is being used by another process. How can I open, read and process the file ...more >>

I am unable to find System.Math Library. How to add it. I am trying find squre root of a number...more >>

I call a stored procedure and get the data in dataset then I do this to sort my data myDS.Tables[0].Select("" , "terminal DESC"); but it doesn't sort. If I put something in filter then it totally ignors that as well...am I missing something? ...more >>

Window's has a way to tell if Anti Virus is installed ( or at least appears to - when it's not installed - it tells you ). How can I do the same check? I just want to know if AV is installed. TIA - J. ...more >>

I'm a self learner, and i'm trying to figure out how this code should work. What is not clear to me, is why the function InsertNumber is called 3 times: wasn;t easier to call it just once and put all together? There is a call to that function at line 8, 13, 17 1 namespace ripro...more >>

In Visual Studio, I can change the name of the solution, project and other source file names. But the problem is, actual sub folder name for the project is determined at the creation of the project. As for now, I manually open sln file with Notepad, and edit the directory name, and rename the d...more >>

Is there a way to set the text for a window, but not paint the title bar? I can set the text to nothing and turn off the control box to prevent the title bar from rendering, but then there's no text for the program in the taskbar or in alt-tab. And as soon as I specify text for the window capt...more >>

Hello , I would like to build a tree structure in c# using the arraylist or hash table. what is the best way to implement it if I want to add children and to print my tree. Thank you! *** Sent via Developersdex http://www.developersdex.com ***...more >>

I am retrieving table schemas for given tables; the information returns the following items of informatin for every column in the table: ColumnName ColumnOrdinal ColumnSize NumericPrecision NumericScale DataType ProviderType IsLong AllowDBNull IsReadOnly IsRowVersion IsUnique IsKey ...more >>

Hi, I was wondering whether the Enterprise Library replaces Enterprise Services as a framework for providing services for enterprise apps, or it supplements it. I know nothing of either of these technologies, but from just looking at their feature set, I noticed that they don't exactly sha...more >>

I am trying to load an image using From image. All the code work(even a simple test version such as Bitmap bitmap; public Form1() { InitializeComponent(); bitmap = (Bitmap)Bitmap.FromFile(@"C:\Documents and Settings\Jon\My Documents\Visual Studio 2005\Projects\BMTest1\BMTest1\Eart...more >>

Hi All, I have seen the '@' character used with strings on several occasions. Comming from a vb background I am not sure what this actually does. i.e: string strScript = @'alert(document.forms[0]['Textbox1'].value);"; What is the purpose of the '@' character in this line, because as far...more >>

I need to read data from one of two file locations depending on whether the application is hosted on Vista or an older version of windows. On older systems its on a subdirectory of the application, on Vista on commonapplicationdata. How do I query windows version please? thank you Claire ...more >>