Answer Questions

• JamesAins Problem with Constructor

  I am new to C++ in .NET 2005 and uses of ^ I have a new application written and a data class that is instantiated on Load of a Form. Problem is as soon as the constructor of the data class is complete I wind up right in the Destructor. I have the pointer to the Data Class defined as Public in the Form1.h and still the Destructor kicks in. My declaration is fairly simple... publilc: MyNameSpace::MyDataClass ^m_pDataClass; Then in Form1_Load afte ...Show All

• A.b.cn What Event Exactly?

  I need to populate a dropdown listbox named "sub category" once the user the clicks his desired selection in the dropdown listbox named "category" e.g. clothing has subcategories like gent's clothes and ladies clothes. I need to know which event i have to use  Im not sure in what event i have to put my code in exactly.Please help.   Maxood wrote: I need to populate a dropdown listbox   Do you mean com ...Show All

• MattShepherd MSXML 6

  Is there a merge module available yet for the new MSXML 6 If not, why Thanks Can Microsoft please provide information on how MSXML6 is to be installed in a public software package if there is no merge module Especially in consideration of the fact that concurrent installations are deprecated with Windows Installer 4. I quote from the MS documentation: "Concurrent Installations, also called Nested ...Show All

• BBBruce Can I update several attribute values with Update operation in SQL 2005?

  Can I update several attribute values with Update operation in SQL 2005 I can run the Code 1 correctly. But I hope to update several attribute values in one operation, so I create the Code 2, but I get error below when run it. Is it possible to update several attribute values in one operation XQuery [cw_Bookmark.Bookmark.modify()]: Expected end of XQuery expression, found 'replace'. //-----------------------Code 1 ---------------------------- ...Show All

• modem Searching for Network Devices using VB .NET? PLEASE HELP!!!

  I am writing a change management app in VB .NET and I need to be able to scan a network for devices like switches and routers. I don't have a clue where to start! I there a way to be able to find these sorts of things by just searching snmp strings or do these devices have some special response when accessed via .NET I really need help! Thanks in advance. Thanks for your response. I have been looki ...Show All

• João Marcelino class design question

  I have my class with properties and methods. I create an instance of the class and get some of its properties in my forms. When I go back to the class and try to access that property from inside the class itself, I see that it has a NOTHING value. 1/ How do I keep the value of the property between calls and instantiations of the class when I sometimes instantiate the class from different forms in my application. 2/ What is this techniqu ...Show All

• dungcoi how to force several typed data adaptors join into one transaction

  I have two typed data adaptors and I want to make a transaction so that the two typed adaptors can submite or rollback at the same time. The data adaptors may use same connection may be not.Currently, they are use a same dbconnection. I think it is easier to be solved. The question is,when I try to get the dbconnection I found that the dbconnection is a internal attribute. I wondered if I have to wrapper another public c ...Show All

• Krop Serial data to a text box

  Hi I am just starting out with C#. All i want to do is collect data from the serial port and show it on my form Text box etc. Eventually I want to save the data to a file. I have created a form with a button and a textbox, plus serialPort1 tool. The following does not build private void button1_Click( object sender, EventArgs e) { textBox1.Text = serialPort1.ReadExisting; ...Show All

• ChampAmp Web service that returns a complex type

  Hi all! If I try to create a WebMethod that returns a complex type, i.e. a class with some properties, the proxy generated by WSDL contains the definitions only for the methods in the class that are getter/setter (if a method is only getter, the proxy doesn't contain it). So, what must I do if I want the web service returns a complex type, but I don't want the user to modify the properieties values of the class he receives Thanks in advanc ...Show All

• paulta How to generate "plain" SQL with OleDb or Odbc providers, in database independent sintax ?

  In VS2005 all generated SQLs in new dataset designer are database dependent, even if we use OleDb provider, for example, if we prepare TableAdapter over Microsoft.Jet.OLEDB.4.0 we get next SQL : Me ._adapter.InsertCommand = New System.Data.OleDb.OleDbCommand Me ._adapter.InsertCommand.Connection = Me .Connection Me ._adapter.InsertCommand.CommandText = "INSERT INTO `TBSIMPLE` (`SIMPLEID`, `CODE`, `DESCRIPTION`) VALUES ( , , )" ...Show All

• Armoghan ADO.NET V2 Oracale Data Access Sample

  Hi, I am looking for some code sample shows me how to access Oracle by using ADO.NET version 2 model. Any help would be apprecited, Alan Don't believe anything has really changed there from 1.1 to 2.0 ...check here: http://msdn.microsoft.com/library/default.asp url=/library/en-us/cpguide/html/cpconconnectingtooracledatasourceusingadonet.asp ...Show All

• tobyxu HTTPwebrequests and cookies?

    I have a class that will do two way interactions with webpages and it will also interact with webservices. I have a client who needs this to periodicall watch a page and gather information displayed by the page. This class would log onto the page just fine, however, cookies are required and I have no idea how they work or how to add cookies because I'm totally unknowledgeable about cookie protocols ot cookie manangement.   C ...Show All

• Terence Lee BackgroundWorker a 'One trick pony'?

  If one uses the ComponentModel.BackgroundWorker and drops it as a component, it gets wired in and one can use it to do non GUI work on your form. All is fine... But what happens if the action it performs is a common occurance and one needs to reuse the object after it has performed its operation There is no reset method that I have found. As far as I can tell, it would be better to programmatically create the worker instead of dropping it as a c ...Show All

• Ahmed Ismaiel Trouble getting value from xml file

  Hi I am new to c# and xml but progressing nicely (I think) anyway I am reading in an xml file and then extracting information from a particular tag and rewriting it to a new file. I have almost got it but I am having a problem getting the value from the element and then writing it as an attribute to the new one. Code is while (reader.Read()) { if (reader.Name == "text" && reader.NodeType == XmlNodeType .Elemen ...Show All

• acplus Pulling images from Microsoft Access

  Hi peeps. Iam completely new to all this. I belong in a macromedia world of flash. lol. But I though I would come see what all the fuss is about and downloaded myself a copy of visual web developer. It looks a really nice program and really powerful. I have probably thrown my self in at the deep end a little as I have nooo idea how anything else works. But I have been looking at pulling data from an access database in to a data list ...Show All