.NET (Core and Framework)

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Re: stop the flow the project kulandaivel_mca200723-Jan-09 0:57 kulandaivel_mca2007 23-Jan-09 0:57  public bool mthOpenConnection() { try { objprop.J = 0; string[] datasource = File.ReadAllLines("d:\\k2.txt"); if (datasource[0] != "") { objprop.connection = "Data Source=" + datasource[0] + ";Initial Catalog=Inventory_VS;User ID=sa;Password=sa"; objCon = new SqlConnection(objprop.connection); if (objCon.State != ConnectionState.Open) { objCon.Open(); } } } catch (Exception ex) { MessageBox.Show("ENTER CORRECT DATA SOURCE NAME IN UR TEXT FILE"); return false; } return true; } how i can throw my exceptions.... message box vedharadha22-Jan-09 20:14 vedharadha 22-Jan-09 20:14  how 2 display message to user in class file...(windows app using c#) messagebox.show is not working. Re: message box VenkatFor.NET22-Jan-09 20:31 VenkatFor.NET 22-Jan-09 20:31  In c#, MessageBox.Show() should work. Check the case of the statement you have. C# is case sensitive. Bhaskara Re: message box vedharadha22-Jan-09 20:34 vedharadha 22-Jan-09 20:34  in c# message box is working. it is not a problem. im using it in class file.. Re: message box VenkatFor.NET22-Jan-09 20:46 VenkatFor.NET 22-Jan-09 20:46  You cannot have a messagebox displayed in a class file. Bhaskara Re: message box Wendelius22-Jan-09 20:40 Wendelius 22-Jan-09 20:40  What do you mean by saying that messagebox is not working? The need to optimize rises from a bad design.My articles[^] Re: message box vedharadha22-Jan-09 20:52 vedharadha 22-Jan-09 20:52  if i type sqlconnection in my form it will shows the functions starts with letter "s"(sqlcommmand,sqladaptorm,reader) and sqlconnection also... when i type messagebox.show the option messagebox.show did not displayed Re: message box VenkatFor.NET22-Jan-09 20:58 VenkatFor.NET 22-Jan-09 20:58  In class library project, reference to System.Windows.Forms is not added. MessageBox is a class that is available in System.Windows.Forms namespace which is only added to the windows applications. Bhaskara Re: message box Wendelius22-Jan-09 21:00 Wendelius 22-Jan-09 21:00  SO the Intellisense is not working. Is the code compiling anyway? One thing could be that you haven't included the namespace (System.Windows.Forms) in you file by using directive. Also the Intellisense may often get messed, but usually restarting the development environment corrects that. If that doesn't help, you could set the intellisense off from options, restart visual studio and set it on again. Also check that you have service packs installed for visual studio. The need to optimize rises from a bad design.My articles[^] Re: message box vedharadha22-Jan-09 22:06 vedharadha 22-Jan-09 22:06  both of u got that am not included the namespace Re: message box Wendelius22-Jan-09 22:20 Wendelius 22-Jan-09 22:20  I didn't quite understand you reply, but if you haven't included the namespace, add using System.Windows.Forms; to the beginning of your file The need to optimize rises from a bad design.My articles[^] Re: message box vedharadha22-Jan-09 22:26 vedharadha 22-Jan-09 22:26  added and executed successfully... thx.. Re: message box Wendelius22-Jan-09 22:30 Wendelius 22-Jan-09 22:30  Okay, you're welcome. The need to optimize rises from a bad design.My articles[^] Re: message box houssien2223-Jan-09 4:13 houssien22 23-Jan-09 4:13  MessageBox.Show("your message goes here"); Re: message box Dave Kreskowiak23-Jan-09 4:18 Dave Kreskowiak 23-Jan-09 4:18  Since a class file shouldn't show any kind of user interface, you don't do this. A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007, 2008 how to create shell and worksapce in window form karthick sampangi22-Jan-09 20:10 karthick sampangi 22-Jan-09 20:10  how to display user control in windows form i've multiple user control and i'm trying to display usercontrol individualy please help me to solve this problem. Re: how to create shell and worksapce in window form VenkatFor.NET22-Jan-09 21:21 VenkatFor.NET 22-Jan-09 21:21  you can use use this.controls.add(this.usercontrolname) to dynamically add the usercontrol to the forms control collection. (use Me if you are doing it in vb.net) Bhaskara In C# what is the best method to parse large XML Documents(1GB size)...? sivasss22-Jan-09 18:46 sivasss 22-Jan-09 18:46  Hi Friends, Can any body help me what is the best method parse large XML File having size of 1GB.If i use XML Document and XML Reader ,result being very late.... Your answers are welcme Thanks with best regards, sivaram Re: In C# what is the best method to parse large XML Documents(1GB size)...? VenkatFor.NET22-Jan-09 20:33 VenkatFor.NET 22-Jan-09 20:33  For XML files of that size, XMLDocument or DOM is not suitable. XMLReader should give better performance than the former one. In case if you are using string manipulations, consider StringBuilder object also in place String. (Just a thought) Bhaskara Re: In C# what is the best method to parse large XML Documents(1GB size)...? malk0lm23-Jan-09 12:36 malk0lm 23-Jan-09 12:36  If you use the XML libraries in C# does it not work for your large file? I've never tried anything with a file that big. ɹǝʌo ɹoʇıuoɯ ɹnoʎ dılɟ sıɥʇ pɐǝɹ ʇ,uɐɔ noʎ ɟı Important question about garbage collector in .net Framework ... Yanshof22-Jan-09 10:48 Yanshof 22-Jan-09 10:48  I rad about how the garbage collector work. From what i rad is that any value type variable can't be application root item - so the value type is can't be collect by the garbage collector ? If not - how the garbage collector collect value type objects ? Re: Important question about garbage collector in .net Framework ... Jon Rista22-Jan-09 10:57 Jon Rista 22-Jan-09 10:57  "I read"...not "I rad"... Value types are allocated on the stack by default, so they don't need to be managed by the GC. Stack objects are discarded whenever that stack frame ends and is popped, which is a fundamental aspect of any program, regardless of whether there is a GC or not. Re: Important question about garbage collector in .net Framework ... Yanshof22-Jan-09 11:18 Yanshof 22-Jan-09 11:18  Thanks! just forgot the "e" ... in the read / rad Re: Important question about garbage collector in .net Framework ... Luc Pattyn22-Jan-09 12:40 Luc Pattyn 22-Jan-09 12:40  Jon Rista wrote: Value types are allocated on the stack by default, IMO there is no default, i.e. value types are allocated on the stack when they are local variables, and inside their containing type when they are members of an aggregated type (hence on the heap when members of a class, and where ever it resides when members of a struct). In each case, there is no explicit garbage collection involved: in the end they reside either on the stack (hence no garbage collection at all) or are part of a bigger reference type (and collection occurs at that ref type level). Luc Pattyn [Forum Guidelines] [My Articles] Good riddance W Re: Important question about garbage collector in .net Framework ... Jon Rista23-Jan-09 4:42 Jon Rista 23-Jan-09 4:42  Well, sure. I wouldn't consider a field in a class as an isolated thing...its an integral part of the class. I think the gyst of the question was "Why isn't an int allocated on the heap and GCed by default". :P

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