C#

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C# Development in VS.NET 23-May-01 5:17 23-May-01 5:17  Hi, I just installed VS.NET Beta1. But unfortunately if I start a new project with C# Windows Application, VS.NET Beta 1 hangs i.e the application is not responding. But others are working perfectly ( a Win32 application etc.,). Is there anything that i have do special for making C# Windows application/projects to work. I am using WindowsNT Server edition with SP 6.0. Thanks in advance. Rgds, Ganesh.M.Ramaswamy Re: C# Development in VS.NET Eric Gunnerson (msft)29-May-01 8:34 Eric Gunnerson (msft) 29-May-01 8:34  Try closing the dynamic help window. There are some "issues" with it in Beta1. Show my dataset in a datagrid... 22-May-01 1:18 22-May-01 1:18  all by code. I really hope some of you can help me, since I'm really stuck. What I have done is that I've made a datalayer which returns a populated dataset and want to show it in my grid on my webform. Using : Debug.Write(dsActivity.XmlData.ToString()); I know that the dataset that is returned is populated. What I do on the .cs class to the form is: //Gets the data from the my datalayer. dsActivity = obActivity.getActivities(); //To ensure that there is data in the dataset Debug.Write(dsActivity.XmlData.ToString()); dgActivities.DataSource= dsActivity.DefaultView; dgActivities.DataBind(); /* Below I've pasted the getActivities routine */ public DataSet getActivities() { dscActivity.SelectCommand = new System.Data.ADO.ADOCommand(null, null, System.Data.CommandType.StoredProcedure , true, null,System.Data.UpdateRowSource.None); dscActivity.SelectCommand.CommandText= "Rastafa_Activity_getActivities"; // The name of the Stored Procedure. //maps tables and columns in a collection dscActivity.TableMappings.All = new System.Data.Internal.DataTableMapping[1] { new System.Data.Internal.DataTableMapping ("Table", "Rastafa_Activity_getActivities")}; return bDBClass.DataSetExecuteStoredProcedure(dscActivity); } /* Stian Fagereng */ C# Project quote request 21-May-01 4:53 21-May-01 4:53  Hi We're looking for a C# programmer for a web project. Please email me (gia@vprex.net) with your rates (this is approx a 40 hour project) and for the specs Thanks Laura Why do i must use C# instead of C++ in an ATL or COM development? 17-May-01 1:54 17-May-01 1:54  The subject of this message is quite relevant of my post! I have an ATL or COM component to develop , and the question is : if i use C# to create the component desired, will it give more stability, performances or any improvement than a C++ development. For instance, creating events in ATL object in C++ is not really easy (of course, when you have made it sometimes it comes easier,...) but in C# is it easier? In ATL development, there are a lot of macros and sometimes you feel like you don't control all purpose of your development, is it the same way for C#? Is there a good environment for the C# development? Is C# use widely in nowadays development (it seems not!)? In brief, why use C# instead of C++? Thanks a lot! Re: Why do i must use C# instead of C++ in an ATL or COM development? 21-May-01 0:07 21-May-01 0:07  Because C# is new Technology. SUbbu Re: Why do i must use C# instead of C++ in an ATL or COM development? 29-May-01 11:50 29-May-01 11:50  Just being new is not generally enough. There have been enough new technologies over the last few years to boggle even the most capacitive mind. The benefits of C# for COM developers are best viewed in the broader discussion of the CLR: The IL that .NET compilers generate (and which the CLR executes) is easier to generate and resolves to more optimizable code than Java ByteCode offers . But even more importantly for traditional Windows developers, the CLR offers several benefits, not least of which is that the code your normal compilers generate is (usually) tuned against the lowest common denominator (typically the 80386) - with the CLR, it compiles code specifically tuned against the processor of the machine on which the code is run. This will result in a performance increase which will more than compensate for the small performance penalty exacted by the protection and safety mechanisms provided by the CLR's execution engine (which do provide an immesurably more reliable environment for your apps). At the end of the day, as a COM developer (particularly if you're a C++ dev-head), the chances are that you spend more than 60% of any project writing and maintaining plumbing code. In C# (or any other .NET supported language) most of the plumbing goes away, leaving you to write your applications rather than custom marshallers etc. Once you've spent more than a few days coding in C#, you'll never go back. Enjoy! Rich.T. Caret position Sylvain Gross13-May-01 21:37 Sylvain Gross 13-May-01 21:37  Hello, I write a C# editor using a RichEditBox (in C# langage of course !!). I want to add syntaxic coloration. I want to use the Select(), SelectionColor() functions. My problem is to know the actual Caret position: where is my keyboard cursor ? I found some function like GetCharFromPosition, GetPositionFromCharIndex, etc., but I can't retrieve the caret position with it. What for technique should I use to get this value ? Thank you in advance for your help ! Bye Sylvain.Gross@oreka.com Sylvain.Gross@oreka.com Re: Caret position Dave Kreskowiak13-Jun-05 10:47 Dave Kreskowiak 13-Jun-05 10:47  You're looking for .SelectionStart. Sadly, though, the RichTextBox is not good at colorization. The larger your document gets, the slower colorization works. RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome Registrations open for 2nd Batch of C# and VB.NET 8-May-01 3:21 8-May-01 3:21  Maxutil Computer Skills : A group of software professionals based at Lucknow( INDIA) already have ventured with the .NET Technologies and Registrations are open for 2nd Batch of C# and Visual Basic .NET .In our group we have the Green Card Holders and definitely they know the international standards of the industry and we make our curriculum acording to international community standards. Feedback : Better to ask our students of 1st Batch. For more information : info@maxutil.com Maxutil Computer Skills. ...An Engineering Appraoch to Computer Education. Address : Maxutil Computer Skills B-43,Sector-B,Aliganj Lucknow (INDIA). PHONE : +91-9839014157 Warning! This is another F'ing AD. Dave Kreskowiak13-Jun-05 10:46 Dave Kreskowiak 13-Jun-05 10:46  What horrible business practices! Try to get free advertising on a world-wide forum? With the cheap-ass way to do advertising, why on earth would I want to take your classes? RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome hi - how do i iterate thru a table 7-May-01 5:55 7-May-01 5:55  how can i iterate through a table based on one of the column entries... plz help me! thanks sai Calendar Web Control 1-May-01 19:55 1-May-01 19:55  Hi, I am using ASPX file with embedded C# code. I have a Button Web Control that needs to call a C# method on the same page. This method will create a pop-up window with a calendar web control, let the user select a date, and return the date selected as a string. How do I write this method? Thank you for any help. Dannyl. C# Applet Like Functionality 25-Apr-01 5:50 25-Apr-01 5:50  Is it, or will it be, possible to create any browser based applet like functionality with c#, (such as browser based chat, ftp, etc; or graphical display)? Re: C# Applet Like Functionality 29-May-01 11:54 29-May-01 11:54  You can develop incredibly rich apps using WebForms where most of the processing is performed @ the Server and most validation & UI stuff is done in JavaScript on the client. If you know your client is running .NET (remember it's going to be available for Win98, ME, WinNT, Win2K and WinXP initially), then of course you could develop a rich client-side WindowsForms or WebForms app, which consumes services from a Server via WebServices. Rich.T. Re: C# Applet Like Functionality Nikhil Dabas31-May-01 8:46 Nikhil Dabas 31-May-01 8:46  You can develop applet like functionality by developing controls with WinForms. You can deploy them like ActiveX controls on web pages, in Internet Explorer 5.5 and above. See http://www.gotdotnet.com/team/windowsforms/iesourcing.aspx for more. calling COM objects within .NET C# 18-Apr-01 9:06 18-Apr-01 9:06  I'm in the process of trying to call our Verity COM object from within a .NET c# class. I successfully made a reference to the COM object from within VS.NET, and it seems to have worked in that I can see the methods and properties of the object. (from my reading, my adding a reference from VS.NET, it automatically takes care of creating the metadata necessary to call the COM object from within .NET as opposed to running the command line tlbimp.exe) I am also able to create the object, and set some properties....however when trying to set some one object type to another, the compiler will not let me do it. For example: The Verity Object has a Vsearch class. A method in the vsearch class is called "GetResults()". The docs say it returns a "Result" Object. So in my code, I create a Search object, a Result object, and then try to set my result object to the contents...like this VerityIS.Vsearch mysearch = new VerityIS.Vsearch(); VerityIS.Result myresult = new VerityIS.Result(); ...set some parametes for searching on mysearch, then execute the GetResults() method. myresult = mysearch.Getresult(); The compiler complains that you cannot implicitly convert type "Object" to "VerityIS.Result"....meaning it sees the mysearch.Getresult() as returning just an "Object" type. So then I try to use explicit casting..... myresult = (VerityIS.Result)mysearch.GetResult(); The compiler let's me do this, without a problem. However, when I call this from within a ASP+ page, I get the InvalidCastException error message. My question is, Is this a bug? Or, is there someway for me to identify the mysearch.Getresult() as the type of "VerityIS.Result" to the .NET framework?? Singleton objects in C# 4-Apr-01 18:02 4-Apr-01 18:02  Does anybody know how to create a singleton object in C#? I've been looking through the documentation on MSDN, but haven't had any luck. Thanks, Lee Re: Singleton objects in C# 6-Apr-01 5:32 6-Apr-01 5:32  Nevermind. For anyone that is interested, you can go to the following site and see how it is done. http://www.clipcode.com/components/singleton_designpattern.cs.txt Lee Nowotny ertret 28-Mar-01 23:52 28-Mar-01 23:52  etewteretert;) Re: ertret Dave Kreskowiak13-Jun-05 10:42 Dave Kreskowiak 13-Jun-05 10:42  Wort wort wort... RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome GPF? 21-Mar-01 2:40 21-Mar-01 2:40  Any tips on how to either cause a GPF or emulate one? I am attempting to write a "hello world, prepare for defenestration!" program for a coworker, and can't figure out how to cause a GPF... I guess I could dig up a screenshot and call the image, as I'm not trying to make a malicious app, just a funny pointless one. Re: GPF? Dave Kreskowiak13-Jun-05 10:41 Dave Kreskowiak 13-Jun-05 10:41  Hmmm... .NET Framework -> virtual machine. Not possible unless you call unmanaged, unsafe code. The easiest way to do this, without pissing anyone off, is to dig up a screen shot. RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome about message use C# 19-Mar-01 22:16 19-Mar-01 22:16  In VC6,I can define my message:#define WM_MYMESSAGE (WM_USER+1), But how to define my message and process it in C#? thank u! Re: about message use C# 29-May-01 11:56 29-May-01 11:56  Why would you want to use this? In .NET, messages are a platform thing. Try creating your own custom event instead. Rich.T.

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