Is anyone out there using a C#.NET OR mapping framework in a production environment? I'm thinking of such frameworks as nHibernate, Gentle, etc.. I've looked at quite a few but none of them seem mature enough for serious use. Looking for suggestions. Thanks. ...more >>

Any one could help how to bind two table field values into combobox display member property. I mean i have two fields in a table. One is states description and another is states codes.I want to add these two fields to combobox display property. Any body knows this solution, post it. ...more >>

Hi All, I have a column in my datatable that is named like a number i.e. 45 I know its not good to have a column named as number, but... Anyways, so when i set the DataView's RowFilter to some thing like "45='blah'" System.Data.EvaluateException is raised with message "Cannot perform '=...more >>

Hi, I'am trying to use several connections. I have got a method to get connection string from a file into a hashtbable. Then, I have got another method to get one connection string from this hashtable and get connection. But when I get a connection string, open() failed with a beautifull me...more >>

I've got a Web page written in C#, and when it runs and the user presses enter, it submits the first button on the form. As you'd expect. I want the system to redirect to a different page when a user pressed enter from a second textbox. I've used the line of code in the Page_Load: SearchStr...more >>

How come const string S = "string"; // valid is valid but const Type T = typeof(string); // invalid is not? "C# Language Specification" chapter 7.15 defines a constant expression as being of the string / char / numeric types that are aliased to System.X types, but 7.15 certainly do...more >>

hi - I have a class Node, with a child class Num, that inherits from Node. - I have a function "Evaluate" that takes two Nodes as an argument. - I call this function by sending it two "Num"'s. When i use GetType().ToSTring(), it seems to be aware that the arguments it recieved are in fact Nu...more >>

Which is the best book for C# ? Programming C# or Inside C# ? Any other suggestions? Thank You. ...more >>

Hi all, How can I open an image with MS Paint in a c# windows application? Cheers, Benny *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it!...more >>

Hi Y'all, I am inside a DataGrid control derived from a DataGridTextBoxColumn. I am in the Enter event. The DataGrid is sourced to a DataTable How do I find the actual data from row within the associated DataTable column to display in my derived control? Thanx, Bill ...more >>

Hello all- I'm pretty new here (and to C#) and am hoping you can help. The title pretty much says it all... I am doing some API testing would like to be able to pick up the arguemnts for my method calls from a text file instead of putting them in the code. Here is an example of what I'm tr...more >>

Hi, Considering code below. Will it make GC to actually collect. One application creates new instances of a class from 3rd party assembly in a loop (it has to). That class doesn't have .Dispose or any similar method. I want to make sure GC keeps up with the loop. My reasoning if Thread.Sleep(10...more >>

I have got Visual c#.net but can't find the Add-in wizard that it talks about in various articles. All I have under 'Other Projects' is 'Database projects' Should there be a folder for Extensibility projects? If so, how do I install this? Many Thanks Graham ...more >>

Hi, I have a windows form say "Form1" which has a menuitem "SetUp". When I click this item, a new form "SetUpForm" opens up. When I change the fields in the "SetUpForm" and click the "OK" button, SetUpForm should validate the fields and if all the field values are right, it should close a...more >>

How to show a form in new thread ? My form will be shown when main form doing a large process. Could you tell me how to create and control this new form? Thanks Charles Shao :-) ...more >>

Hi all, I am using a tableadapter to read data from a table - no problem, I have configured the Tableadapter to add an InsertQuery. My problem is when I first Call the InsertQuery and then re-load the data ( into a list ) the new row does not appear, however if I re-call the InsertQuery a...more >>

Hi there, I am using NDOC to generate docs for one C# project which I wrote. My assembly has some public classes that are not meant to be used by others and I have not documented them. I would like NDOC not to generate documentation for those public classes that do not have an XML documenta...more >>

You guys should install SDL.NET. I'm running the examples in monodevelop right now and they're /wicked/ !...more >>

I have an assembly that I compile on my machine with debugging symbols on. So when I add a reference to it and call one of its method, I can "step into" the assembly code. Now, I take the assembly and send it to my friend sitting in the cube next to me, and when he tries to step into the as...more >>

I'm trying to learn the very basics of using an unmanaged C++ DLL from C#. This morning I thought I was getting somewhere, successfully getting back the correct answers to a C++ " int SumArray(int ray[], int count)" Now I'm having problems with C++ "return(false)" being True in C#. Here is t...more >>

La función Environment.GetLogicalDrives() devuelve una lista con las letras de las unidades lógicas que hay disponibles, pero me gustaría saber si se puede distinguir de que tipo son (disco duro, cdrom etc) Gracias ...more >>

I'm sending parameters into store procedure but when I send a null value it gives me an error. It only works if I put a null value directly into store procedure. Why? Hrcko ...more >>

I have created my first application and stepped through the deployment walkthrough. I've created an deployment project which works very well. However, I several stored procedures that need to be added to an existing database but I'm not sure how to install the stored procedures through the ...more >>

I have to 2 Data classes have the same methods with defferent implemention which work with 2 tables in the database.. I want to chnge the instance referance depend on if condition or switch case.. like this... myclass.AddRow() where my class can be instance of Categories or Employees so i ...more >>

I am having problems making a question work. I have a vb6 function I am porting to C# (still very new to CSharp) and am not able to make sense of this. Any feedback would be appreciated! one is - how do I replicate this in C# I need to ask this service if this is more than null then die ...more >>

Hello, I am using singleton class in my application. I want that the singleton class object onc created should be alive as long as the appliation is running. But when I try running my application after say 24 hours, it doesn't work. I think the object is being killed at some ins...more >>

I have to 2 Data classes have the same methods with defferent implemention which work with 2 tables in the database.. I want to chnge the instance referance depend on if condition or switch case.. like this... myclass.AddRow() where my class can be instance of Categories or Employees so ...more >>

Hi, I can't figure out why my HasRows code is always true. Below is a snippet of my code. sqlConnection1.Open(); //Check that quiz name is not a duplicate during the Create(0)task string cmdCheckName="SELECT Count(Quiz_Name) FROM Quiz WHERE Quiz_Name = '"+valName+"' "; SqlCommand cmdCheck ...more >>

I have a program that I've written a class for. I need to call the function in the program from the class. When I try to call the function I receive the error, the name xxx does not exist in the class or namespace. Where xxx is the function being called. How do I call the function?...more >>

The example of KB 326080 doesn't work...especially the Join TIA ...more >>

Hi, I'm trying to create an instance of Visual Studio and open a file in it, in a console C# application. EnvDTE.DTE aDTE = (EnvDTE.DTE) Microsoft.VisualBasic.Interaction.CreateObject( "VisualStudio.DTE.7", ""); aDTE.ItemOperations.OpenFile("J:\\toto.hpp", EnvDTE.Co...more >>

Can I make that an object to destroy himself? I want to put some code in the constructor of a class (call to my security service). If it doesn't have the permissions I want to not let the object be instantiaded. TIA ...more >>

I am writing software to mimic the actions of a device connected to the serial port. I want my software to create a virtual COM port, so that other applications can talk to it. Is it possible to write a virtual device driver in c# for this? S....more >>

I am doing a project where we need to read a write data to a database (SQL Server 2K in this case). I have seen the use of data binding to link a property of a control to a field in a record set from a database. It seems like this can give some benefit like being able to easily ignore all cha...more >>

Hello, there's another languages that can do a macro substitution, how can I do this in Csharp. This is an example of what I want to do Dataset ds = new Dataset; string a = "ds"; DataSet ds2 = &a; This is a little more complex int i = 6; int j = 5; string a = " i == j"; bo...more >>

Hi, How can i create control dynamically in C# (Window Application) whose property value retrive from database ? regards, ...more >>

Hi, I am using the below code to search GATE=1 from the xml file but not getting the output.How to do it?I want to display the contents of GATE=1 in my console application.How to query that particular gate in c#.net? XPathDocument doc = new XPathDocument("C:\\gates.xml"); XPathNav...more >>

One of the nicest things about Delphi was the wide range of freeware components easily found on the net. Are there similair libraries for C#? (Not looking for war3z -- only components which are legitimately freeware or shareware.) *----------------------------------------------------* Evolution...more >>

I'm trying to write a function that can reliably know the name of the calling method. I've figured out how to do this: string methodname = (new StackTrace()).GetFrame(1).GetMethod().Name; This seems to get the name of the method that called the current method. But there are two problems. ...more >>

When I bind a dataset to a SQL query that contains a blob field it comes back as a byte array. Is there any way to have it interpreted as a string or somehow convert it to a string? I'm using the blob field to store large amounts of text and I need to be able to interpret it as such. Re...more >>

Hi Having a system where I'm being called from clients (applications), I need to identity the calling method and class as this class is decorated with custom attributes I need to perform some logic dependant on this custom attribute. How do I in robust manner identify the calling methods...more >>

I need a really good logging system for an application. Is there a way to programatically get the current line, in the ide, that has been executed. That way, i can log the line at which the error or an event was fired. Thanks, ...more >>

How can I create a class property such as the 'DockPadding' one from the UserControl class? What I mean is a property which can be expanded and have its own properties modified. In the design view, the DockPadding property looks like this when expanded: DockPadding .. All .. Left .. T...more >>

Hello, Is it possible to find out how many methods are listening to a certain event? For example, if a number of methods subscribed to a controls DragDrop event using +=, can I find out how many methods in total are listening to the DragDrop event of the control? If I can't find out the ...more >>

I have a date and time field which looks like the following: 01/Oct/2004:13:49:19 I thought I could use the DateTime.Parse(myTextDate) method to convert this into a date and time object, but it does not like my date value. Am I using the wrong method? Is there an easy way to get this con...more >>

I have, at one point in time, been a pretty good programmer, but that was years ago. I can pass programming classes with and A with no problem, but writting a business class application is a bit of a struggle. I am relitively new to .NET and C#, but do have pretty strong background in compute...more >>

Hey, I am stuck on this little problem, I have a database which I use to fill a dataset when my application loads, however at certain intervals Im filling another dataset using the same database. What i need to do is find any new records added. Ive tried all kinds of thinks like DataSet.Mer...more >>

I have an XML contains a time like 02:22:14 PM where it is read by windows service i need to make a thread to start on a time specifed in the XML, how can I achieve this? ...more >>

How can I add text to the next line of a textbox without disturbing the previous line? Thanks, Trint ...more >>

I wanted to know why the output is different & also like to know if C# i can get the user name using DirectoryEntry > find. C# String myADSPath = ("WinNT://"+ Environment.MachineName+",computer"); DirectoryEntry m_drentry = new DirectoryEntry(myADSPath); // "admin" is user name Directo...more >>

I'm a C# (but not programming in general) novice, but I couldn't find any answer to this elsewhere. I'm trying to make a text scroll on the form. I thought this was a good example to get started with the encapsulated GDI+ functions. So, I essentially have a Timer that raises a Tick event e...more >>

Hello, everyone I am a newbie in the data access in .NET environment. I was trying to show something from an MDB file in the form, but nothing seems to work. In Visual FoxPro it would take me a couple lines of code to do anything in the DBASE database or table. A little more with other f...more >>

I'm using TcpClient and getting the Stream by: TcpClient tcpclnt = new TcpClient(); . . . Stream stm = tcpclnt.GetStream(); Now, when I'm trying to send a big buffer via stm.Write(...) I get an exception saying that the buffer is too big. I tried to set the tcpclnt.ReceiveBufferSize to...more >>

Currently, my code reads from a database without knowing the order of the columns like this: string name = (string)datarow["name"]; However, is there a way to write or do an INSERT back to a database without getting caught up in the order of the columns? Right now I do something like this...more >>