I need to create ExecuteQuery() method with signature: System.Collections.Generic.IEnumerable<TEntityt> ExecuteQuery<TEntity>(string selectCommand) selectCommand is sql SELECT statement like "SELECT Name, Id, City FROM Customers" This function should use Data Reader to get data fro...more >>

Hello, Until recently, I had been developing on an XP machine. Updated to Vista as the development environment and now when I try to access a file that I need to load I get an UnauthorizedAccessException Pardon, my ignorance but what is different in Vista security wise that would prevent...more >>

Hi, "THREAD_UI" = thread under which the UI controls were created. "THREAD_XX" = another thread. "FUNC_UI" = function that needs to run on THREAD_UI. From THREAD_XX I need to start the execution of FUNC_UI, that needs to run on THREAD_UI. Inside FUNC_UI, I will modify many controls presen...more >>

I'm almost positive that this isn't possible in C#, unless there's something REALLY esoteric I haven't come across, but I was curious why something akin to multimethods in Lisp isn't possible in C#. Specializing function arguments by type is useful, but sometimes it would be really nice to be...more >>

Does any one know how to caputer text data sent to a printer to a file. I have seen a window service that captures text data sent to a printer on the server and save it to a file. I would like to know how to do this. I have many reports that are produced on an IBM mainframe as text that I woul...more >>

I have these two methods that are chewing up a ton of CPU time in my application. Does anyone have any suggestions on how to optimize them or rewrite them without Regex? The most time-consuming operation by a long-shot is the regex.Replace. Basically the only purpose of it is to remove spaces ...more >>

I have sent a message to the apache listserver, but thought I would ask here, too, just in case anyone has seen this problem. I am using log4net to do logging in my .Net 2.0 application. I am using the most current version. It's been working great (AFAIK), but today a couple of the QA pe...more >>

I have a web service that pass me a DataSet, I get all data correctly, I can even load it on a DataGridView, buyt I want to pass tha dataset to a Internal SQL Server, exact data structure , with no modification. What is the best wat you pass the Dataset to a table on the Internal SQL Server? ...more >>

Hello all: I am working on a C# program and I need to invoke a method on an external web service. I have done many such method invocations from .NET web services where I am able to add the web reference to my project, but for this all I have is a WSDL and the URL for the external service. ...more >>

Hello, Can anyone point me to the code for a simple example of 2 classes and / or forms referencing each other using Fields or Get/set properties. I want both to be able to acces each others Properties and Functions. I want the correct way, so I learn the correct way. I know this is simple stuf...more >>

I have an application where I wish to display and update some text in place, eg: Status1 = val123 Status2 = val345 Status3 = val456 The valXXX is real-time data which needs to be periodically updated and re-displayed at the same location in the console (effectively overwriting the old v...more >>

Hi, I have always had a problem when programming with ADO.NET and Windows Forms. It is about how to access database through WinForms. For example I have an application with several forms and each form deals with a part of the database. There are some options available: 1- I can create a datase...more >>

Hi all, Trying to validate a password with a regularexpressionvalidator But cant get the regex to work correctly I' look for a Alpha-numeric password of at least 7 in length and no upper limit in length Thanks Robert ...more >>

Hello, I have written a sample async code (using callback/async). I am now seeing a situation where-in if two messages are received at the same-time, both of them show-up in the data-buffer. Given that i am new to this, can you point to resources or suggest ways to handle this scenario? (th...more >>

Hi all, I'm having some trouble reflecting the attached class. I have an IList<ICell<object>> collection of them. I get the first instance of ICell<object> in the list and call GetType() on it to get the concrete type of the implementation of ICell<object>, which is the class below...more >>

I want to get my hands dirty with Linq, so I watched a few videos from www.asp.net, and then turned to http://msdn2.microsoft.com/en-us/library/bb397687.aspx for some introduction about the new lamda feature of C#. In the article linked above, there is an example reproduced here: int[]...more >>

Hi I want to assign the values of properties of object A to objectB They both belong to different classes but implement on common interface. I just want to assign the properties defined in the interface. Will this work? ClassA a = new ClassA() classb b = new classB(); IMyinterfa...more >>

Hi all. I need to generically detect changes in any object from one point to the next. I can't modify the objects, nor can I use traditional serialization because the attributes aren't present and would be too slow anyway. My current approach is to recursively traverse a given object usin...more >>

We are currently targeting .Net 2.0 and including it as a prerequisite. We want to upgrade to .Net 3.5 to use some of the new handy-dandy features. I changed the Target Framework to .Net 3.5 and changed the prerequisite to ..Net 3.5. When the user runs the application and it picks up th...more >>

Hi, I need to write an application which two computers can transmit data via serial port (COM1). So I wrote two simple test program write to comm and read from comm. However, when I test these two programs, I could not read any data from COM1. Data seems to send Ok but the receive program can...more >>

Hello people, I have a performance query regarding LINQ that I would like some opinions. Currently we have a business logic framework that is used in n-tier applications. We read data from a database using a data reader and use this information to populate a set of business objects. Our ...more >>

Hi everyone, I'm wondering can you help me understanding some C# syntax. 1. What does the this do? specifically the <string> thingy? List<string> keys = new List<string>(); 2. When you preceed a class with "[Serializable()]" - what does it mean/do?: [Serializable()] public ...more >>

Hello, I have defined a real time data acquisition point as: public class DataAcqPoint { public byte DataSrc; public long TimeStamp; public float Value; } I would like to get some opinion of what would be the most efficient, fast way to store the data po...more >>

Is there an equivalent in C#.NET for the VB.NET FreeFile() function?...more >>

alright...one more try at this...at least it got people talking about it...This is just what I think would be good features...(which of course doesn't mean jack)...but I think it's good to discuss... 1. static extension methods I think they would be very useful. for instance adding other...more >>

When you pull up a second form in your program, how do you get the values from the form? Form2 dataForm = new Form2(); dataForm.ShowDialog(); if (dataForm.DialogResult == DialogResult.OK) { // I want to get the textBox1 data f...more >>

http://comp-languages.blogspot.com http://computer-language-tutorials.blogspot.com...more >>

My application appears to have a recourse leak. When the user starts a background process, the handle count in Process Explorer (PE) goes up by about 10, sometime 1 or 2 more, sometimes 1 or 2 less. When the task is completed, there are somewhere between 4 and 7 handles still open. My proce...more >>

Hi all, I am writing a program that needs to take a login name and password, and then try to authenticate against an AD server. Sounds simple enough so far... The name and password may be entered by a user (real human being), however it also may be generated by another application (actually, ...more >>

Hi, I have just migrated to C#. I need some advice on the following problem: I need to create an object/structure with characteristics A,B and C. A and B are Integers while C consists of 2 Integers. I need to store data in these, every 5 sec or so, each value with a DateTime stamp/ index. I wil...more >>

Hi all I have the following code NorthwindDataContext nw = new NorthwindDataContext(); string orderByFieldName = "ProductName"; var data1 = (from p in nw.Products orderby orderByFieldName select p); This obviouslay doesnt work, what am I doing wrong. I...more >>

When i deploy my application i want to write to the registry to make the application last about a month.I want the application to check that date everytime it starts up then when the customer registers the software i want the application to run like normal.If there is a better way to do make a a...more >>

Hello to all. Please help me. I'm inserting a date into sqlserver 2005 using C#3. my problem is while insert is successfull my date and time. It's possible to insert only a date? -- To be Happy is To be Yourself...more >>

Hi All, I've created a crontroller which has 3 text boxes. I set for all text boxes in this cotroller a key_press event. In my other app which uses this controller, I want to override the key_press event of the first text boxes in the controller. Is there a way to override an event of contr...more >>