Hi! I have done a couple of ComClasses in vb, and from now on i want to code ComClasses in C# is there an equilent of this in c#? If not how to proceed to get the same functionallity to be able to expose the com class? Regards Martin ...more >>

Hello, Is there a way to call a printDialog from a printPreviewDialog (from print icon for example)? Indeed, the print icon in the printpreviewdialog prints directly the document without lunching the printdialog (i.e. the user can't choose the print parameters). Thanks a lot. ...more >>

hi all. in my dev team we have an argument about retrieving Records from DB to DataSet. the big question is: should i retrieve all the records from my table (max 4000 records) to my DataSet, and then, inside the client i'll filter a DataView, or should i filter the records in the SqlComand...more >>

Looking for an idea here. I've got a .Net app connecting to SQL2005 where I allow users to add pictures to the database. But I don't want them adding gigantic images, so I'm looking for an idea on how to control how big of an image they might add. I'm not interested in simply saving a pointer ...more >>

Hello I'm writting a c# app, and I've got a computer that has two built in nic's. One is a Intel Pro/100 and the other is a Intel Pro/1000. I want to get the mac and ip address assigned to the Intel Pro 100. Anyone have idea, examples of how I can get that information to display to a u...more >>

Hi, guys! How can I make ListView to be transparent? Transparency in C# seems to be a problematic part at all. It's not truly transparency I used to in Delphi. Thanks a lot ...more >>

Hey all, I need to validate a large binary file. I just need to read the last 100 or so bytes of the file. Here is what I am currently doing but it seems slow: private bool ValidFile(string afilename) { byte ch; bool bGraybar = true; FileStream fs = null; BinaryReader reader =...more >>

I'm trying to ensure that all the characters in my XML document are characters specified in this document: http://www.w3.org/TR/2000/REC-xml-20001006#charsets Would a function like this work: private static string formatXMLString(string n) { if (string.IsNullOrEmpty(n)) return...more >>

I've written a function that might return multiple e-mail addresses. I've been returning them in an XML string, and parsing it using ReadString, but I get the error below. (Code for ReadString is also included). Does anyone have any advice as to the best way to proceed? 1 - See if there's ...more >>

Hi group, i need a bit of help with this: public abstract class BusinessComponent<TData, TDataMapper> where TData : BusinessEntity,new() where TDataMapper : DataMappers.DataMapper<TData>, new() I want BusinessComponent to implement an interface i created, however i can't get the syntax righ...more >>

Greetings, When my data is updated in my sql server database there are a number of jobs that my current process performs that analyzes the new data. This only happens once a day very early in the am. When I want to add a new job I have to add new code to the current process. You probabl...more >>

just wondering.... Say i have a class with 3 nonstatic properties P1, P2 and P3. Now somebody creates an instance of my class and calls any of them (instance1.P2) Is it possible to execute some other function say (checkIfLoaded) before the property accessor is executed? I realize i could do ...more >>

Can anyone tell me which group to use to discuss WPF? Thanks Pete ...more >>

Hi, We have figured out that System.Timers.Timer should be avoided because it occasionally stops firing. So, we dutifully began switching over to System.Threading.Timer but somebody at work now says that System.Threading.Timer can also be unreliable. Could somebody in the know please te...more >>

I have two tables in a database. One fills the drop-down and the other records the selection. Filling the dropdown with another table seems to be breaking the binding with the table it records to. VS2005 with SQL2005. I have a lot of these to do, and don't want to hard code each box. I can dr...more >>

In a database table we will have a column "Round" for which round of feeding the record applies to at a cattle ranch. The value will always be either 1, 2, or 3 since we feed just that many times per day (kind of like breakfast, lunch, and dinner). In the table, would you make the column ...more >>

Hi, Last question (promise). I want to write out a new XML row, tacked onto the end of everything contained under the first <elementName> section. I can do the write, I'm just not sure what the xpath is to complete the following: XmlElement el = (XmlElement)cdjDoc.SelectNodes(@"first elemen...more >>

AM I missing something? How can I create a method that returns a generic data type without making a formal declaration. For Example: public List<> getData { } I want my function to be able to return any data type that a caller wants. I do not care what datatype they invoke with ...more >>

I know this question is stupid, but I really don't know how to do? I am trying string[][] s = new string[10][10] and it is wrong? Can someone give me a help? Or tell me where I can find answer, Thanks Cheers FAN ...more >>

Hi, I have an xml file with structured like this: <?xml version="1.0" encoding="UTF-8"?> <Soldiers> <Soldier name="Billy Smith" rank="Private" serial="34" /> (a bunch more soldiers) </Soldiers> In my program, I have a struct: public struct soldierStruct { public string...more >>

Hi, I'm a newbie with WCF, I would like to know whether it's possible or not to send a message to JMS (on a JBOSS Server) with WCF? Thanks for your help Rod ...more >>

I run a search on my database and get items that fit that search in a datagrid. There are checkboxes already for each item. I need to create a select/deselect all checkbox at the top of the column and be able to select.deselect all items that I have found. I am using C#.Net Thanks in advan...more >>

Hi, I have the following code : string sData=@"{\*\bkmkstart adresse1} FORMTEXT }{\rtlch \af0 \ltrch \f1\fs22\insrsid16733897\charrsid10567516 {\*\datafield 000000000000000008616472657373653100000000000000000000000000}{\*\formfield{\fftype0\fftypetxt0{\*\ffname adresse1}}}}}{\fldrslt {\rtlc...more >>

Java has this. Anyone know of a .Net equivalent? Thanks, Eric ...more >>

..Net 2.0 Hi, I'm getting a nullreferenceexception when calling a function from a worker thread: private void CallbackProc(string response, Exception ex) { if (this.InvokeRequired) { this.Invoke(new MyCallback(CallbackProc), new object[] { response, ex }); } els...more >>

BenchMarking and Profiling .NET Application Tools>>>Which should be World class providing accurate output. The Tools should Benchmark MY ..NET Remoting Server/Client and SQL Server Database. ...more >>

Hi. I am trying to learn about array lists, and found an example on MSDN. I tried to compile it but it's not producing any output. I can't see why. Any ideas? Here is what I did. 1. Started new windows application. 2. Deleted the code files (program.cs, form.cs) 3. Created a new code fi...more >>

Hi all, I have a two-dimensional array of data, f.x int's. We can imagine that the array is "really large". Now I want the data in it and store this in a one-dimensional array. The obvious way to do this is a nested for-loop - but we all know O(n^2) is bad. So I am looking for something lik...more >>

Hi, Is there any way to build or distribute a C# application with a Powerpoint component, so that the application can display Powerpoint presentations on PCs that do not have Microsoft Office installed? Thanks for any insight! Rgds, Manny ...more >>

Can you explain why using ref keyword for passing parameters works slower that passing parameters by values itself. I wrote 2 examples to test it: //using ref static void Main(string[] args) { List<TimeSpan> times = new List<TimeSpan>(); DateTime start; DateTime end; for (int ...more >>

Hi, As I continue to explore C# , Visual Studio, and Programming in general I am becoming increasingly hooked. I see myself definately studying and learning c# with visual studio over the next year or two and am frequently finding pieces of code i'd like to save for later use. Is there a be...more >>

Hi, I read somewhere recently that the strategy pattern could be used instead of using switch command on an enum (for example). How would this work? A small example would be great. Thanks, Nick ...more >>

there are some dos command < or > it can use like this if there is a batch file as sample.bat sample.bat < parameter sample.bat parameter > result . i just wanna use this when i use Process.Start() method. but < is not recongnise a parameter . how can i do? ...more >>

Imagine I subclass Panel into MyPanel and set a few property values to my own defaults as shown below. Eg. I set BackColor to by LightYellow. When I add MyPanel to a form, it will write the non-default property values into the InitializeComponent of the form. So it will explicitily set myPa...more >>

I'm new to C#, and I have only limited programming experience. I've been doing the video tutorials at MS's website, and they're very helpful, but I decided to experiment with GDI+ and have gotten stuck. I'm trying to draw a bitmap on my main form and then to draw a second bitmap, as if it ...more >>

Gidday, I am stuck trying to create a COM Callable Wrapper for the class (shell only) below. As you can see I have tried to define my interface and it would be all good if I wasn't passing my enum into the main functions (which are marked public static). I am unable to create an interfac...more >>

Hi, I have a two richtextbox with rtf content. I just want to add the content of the 2 richtextbox into a third one. When I use the code below, the richTextBox3 remains empty. richTextBox3.Rtf += richTextBox1.Rtf; richTextBox3.Rtf += richTextBox2.Rtf; And of course i can't use richTextB...more >>

Hi, How can I save the text edited in a richTextBox into a field of an Access table. I have an error using the following code: OleDbCommand toto = new OleDbCommand("UPDATE Table1 SET Field1 = '" + richTextBox1.Rtf.Replace("'","''").Trim() + "' WHERE id = 8" toto.ExecuteNonQuery. Field...more >>

I'm using TCP/IP to send a Bitmap object over Sockets. This is my first time using C# at all so I don't know if this is the "right" way to do it. I've already found out several times the way I was doing something was really inefficient and could reduce 10 lines of code with 2, etc. For reading...more >>

Hi, This gives me a runtime error that it is an invalid value. I tryed some other keys with same result. However I tryed some function keys and they work (whell I did not test if it work, I did test if there was no exception). Are there limitations or do I do something wrong here ? cance...more >>

Hi, I wasn't happy with the customisability of the standard Windows form, so I decided to implement my own. Basically what I did was extend a borderless form and add my own borders and caption bar to it so it looks and functions like a normal bordered sizable form. However the only thing I ...more >>

Hello there. This should be very simple for someone to solve. string s = System.Text.RegularExpressions.Regex.Replace( "King Henry Viii", "\bViii\b", "VIII"); Console.WriteLine(s); I think the above code should write out the string "King Henry VIII" (with capital I's), but instead it w...more >>

Hi there, Is there a syntactically cleaner way to do this: if (!(MyObject is Whatever)) { // ... } Thanks. ...more >>

I have been asked to write a ..NET Windows app using the 1.1 framework. I have both 1.1 and 2.0 on my PC. When I create a new project in Visual Studio 2005, it shows initial namespaces under references (System, System.Data) all of which are version 2.0. How can I tell my project to use on...more >>

I'm trying to write new stream from string and i can't figure out why my memory stream instance is null after i have writen to it with stream writer. Here is an example. MemoryStream stream = new MemoryStream(); StreamWriter writer = new StreamWriter(); writer.Write ("my string"); at...more >>

I'm curious as to if .NET provides any direct means to modifying its own grammar? e.g., if say I want to had some "features" to C# which can easily be reinterpreted back into the original C# but I do not want to have to write a full blow parser just to change some simple thing. Lets suppose...more >>

Hello, I'm trying to speed up a piece of code that is causing performance issues with our product. The problem is we are using serialization to convert the object to a string, this is costing us performance degrade. Does anyone know any better way to archive this which just not degrade perf...more >>

I have a webservice that returns data from a database. Our services (the clients) have been blowing up because of illegal character problems. Is there anything I can do on the server side to work around this problem. I'm OK with deleting all the "bad" characters. I have a couple DTOs that...more >>

within a loop i am building a sql insert statement to run against my (programatically created) mdb. it works but it seems unreasonably SLOW! Sorry, dont have the code here but the jist is very standard (I think!); e.g: # get connection loop { build sql (35 fields to insert) ca...more >>

Hello. Is there a method in the .NET class libraries to know if a given file is binary or just plain text (ASCII)? Thanks in advance. -- ...more >>