Hi there, I have a application with multi-forms. The situation is that Form A(have a Dataset) is a base window,click one button to instiniate Form B(use the Database from Form A, Update the Dataset after something changed), How can I access to the dataset in Form A, supposed Form A is also ...more >>

class xyz{ public void somefunction{ if(this.folderBrowserDialog1.ShowDialog() == DialogResult.OK) { m_varFolderPath = this.folderBrowserDialog1.SelectedPath; m_varFolderPath += "\\Iamlucky.txt"; System.String a =(String)strVariable1; System.String b =(String)...more >>

Hi I don't know how to access the ODBC API through C#. The VS.NET provides OLEDB Data Provider but not ODBC E.g., select * from tbl where id= To get the data type (description) of the column 'id', the ODBC provides a function 'SQLDescribeParam()'. But, I don't know how to access this function ...more >>

Hi all, PowerAD 1.4 has been released yesterday. It is a free Open Source management console for Active Directory, with advanced possibilities that do not exist on the mmc "Active Directory Users and Computers" provided by Microsoft. This software is developped with C#, the source code is av...more >>

How do I get the window username and password information so that I can imporsonate to access a remote file server using the UNC path using asp .net or c# code....more >>

How can I bind a string-Array to a DataGrid? I've already set the MappingName in the to DataGridTablestyle to "Array", but the Grid seems to display only Garbage: Lenght| -------| 13 9 3 3 3 What is this? I didn't name a Column "Lenght", neither includes the array numbers. The conten...more >>

Hello I want to create a "print driver function" for print-to-email For eg.=20 I create a document in Excel, or Lotus 123 or any other program which = has the ability to print. I preview it to make sure it is OK. I select = as a printer: "print to email".=20 =20 Then properties button pops ...more >>

Hi Al I would just like to know, When I am developing my C# Windows application, would it be better for me in the long run, to make Web services instead of DLL's so that when/if eventually we have a Web application that needs the same functions, it will be easier to integrate this web service, or ...more >>

Hi All Can someone please tell me the difference between an Array and an ArrayList, and where I would be likely to use one over the other Thanks alot for any help...more >>

Does GhostScript provide any library so that we can reference it in our C# project to programmatically handle printing of ps / pdf files? I have tried to use the gs command (call by process) in C# application to handle printing. gswin32 -dPrinted -dBATCH -dNOPAUSE -q -sDEVICE=ljet4 -dFirstPage...more >>

How can i convert Word file to txt file in ASP.NET using CSharp?...more >>

i wanna use keys combo to show and hide my app could someone show me how to capture global key strokes ??? essentially it behave like a keylogger program, but it not :-) thanks ...more >>

Hi All, I have a requirement where I have a piece of C++ code and C# code which i need to compile and call the methods in it( the signature of the methods that will be in it, i know before hand ) from a C# code. I got how to do it for C# code. Using CSharpCodeProvider class. But i want to kn...more >>

Creating an Windows application with C# (a.exe). My program a.exe has default icon (in Windows Explorer). How to change default icon for my program ? (Certainly, not by creating an shortcuts to a.exe) Thanks ...more >>

Hi, I am designing webservice component. I am defining a class for the entity user. UserId, UserName will be frequently used. I have created a class for them class UserHeader { public string userId; public string userName; public bool ValidateUserHeader(); } All other user det...more >>

I have created an application that has a command button. The button is clicked and the click even contains code that looks like the following: private void cmdCall_Click(object sender, System.EventArgs e) { this.lblState.Text = "Attempting Connect"; ...more >>

Hi, y'all. Can anyone help me on this problem? I'm working with a third-party C dll, and I'm having trouble importing into C# the dll's methods that return one of the dll's defined types, which are all defined as opaque pointers. What I tried to do is use IntPtr for the opaque pointer retu...more >>

With code like this: public void SomeMethod() { for (int i = 0; i < SomeLargeNumber; ++i) { int n = GetANumber(); DoSomethingWith(n); } } Would the "int n" part be optimized out somewhere along the line? i.e.: would something like the following happen instead: public void SomeM...more >>

Hello, Say I have three classes inheritance A <-- B <-- C And in A I have the Create method: class A { public override bool Create() { // do stuff return true; } } class B : A { public override bool Create() { if (!base.Create()) ...more >>

Hi In the following code, I get an Error when I try to Fill the Dataset String sql = "SELECT * FROM Table1 UNION SELECT * FROM Table2 UNION SELECT * FROM Table3" SqlDataAdapter earnAggAdapter = new SqlDataAdapter(sql, con) earnAggAdapter.Fill(tempDS, "Earnings"); // I get a "System Error" he...more >>

I was wondering if I have an existing DataAdapter created and I had killed the connection to it. How do I setup a new connection to same DataAdapter without having to resetup the DataAdapter? So reconnect the DataAdapter after a disconnect is what I'm after. Thanks, JJ ...more >>

I have this problem with .NET remoting: my remote class is called RemoteHandler which implements an interface called IEazyRemoting which has only one method to be implemented which is [GetSum(int x,int y)] my server configuration file looks like this: <configuration> <system.runtime.remot...more >>

How do I find out what the network IP address is? For example if I have a cable modem with 68.57.200.50 as the IP address and the linksys router assigns PC's on the network 192.168.1.1 how do I find out that the address is 68.57.200.50 running my code on the PC with the IP address assigned to it ...more >>

I wish to link up the enabled property on a Save button so that it is set true if any table in the underlying Data set is changed. I figured that the OnPropertyChanging event in DataSet would be the correct place to handle this but I have not been able to get it to work. Any ideas, cheers D...more >>

I have the following requirements: Build a stand-alone C# application that asks the user to click in a cell in an Excel spreadsheet, and then displays the address of that cell in the C# application. It seems simple enough, but the problem I'm encountering is as follows: In order for the use...more >>

I am trying to find how to bring another applications window to the top of the screen from a C# application. I can get the process by using this code: Process[] processes = Process.GetProcessesByName("ToolParamEditor"); But I bring the window of the app to the top. Thanks, ~Boyed...more >>

getting "Object reference not set to an instance of an object." from a web app. here's the code snippet if (dsVendorNames1.Vendors.Rows.Count > 0) { this.ShowVendor(ddlVendors.SelectedItem.Value); } please tell me what's wrong, a c# newbie!...more >>

Does anyone know of any EASY way to convert rtf to html and back again??? I'm going nuts looking for an answer to this, but perhaps that's redundant... NWOP. ...more >>

Any way to evaluate aspects of what was passed? I have a need to add multi functional operations to a text box. I need to take a # an multiply it, divide it, just change it to the new one, or leave it alone. I was hoping to get fancy with Switch & Case. string lc1 = textbox15.Text; switch ...more >>

I am writing a Windows service. I have a timer that is set to 5 seconds. On the elapsed event i stop my timer and i start a process that triggers an exe app. It all works fine until I need to see when the exe finished its work. I tried to use the following code to capture the event. Any code sam...more >>

Hello can someone tell me why i get "One or more files do not contain components or type libraries. These files cannot be installed" when i try to register it in Components Services? using System; using System.EnterpriseServices; namespace COMTest { public class Class1 : Serv...more >>

I have loaded a file from disk with the Assembly.LoadFrom() method. What do I have to do so the file can be released and the file deleted ? Regards Tomas Palmquist Pointsec Mobile Technologies ...more >>

Hi, I need to preinstall silently some applications and runtimes (.net runtimes) before I install my application but want to do this from a .bat file. I tried to add this as a custom action in the setup project in "Add files" but its not allowing .bat files. Are .bat files no longer suppor...more >>

Hi there, I have created class library project called DSResolver in an attempt to create a SQL server Custom Conflict Resolver dll. My project contains on class called DataSafeResolve which implements the SQLResolver.IVBCustomRsolver interface. The project also has a reference to the SQLResolve...more >>

C#: Is it possible to make a property of which the get accessor is public and the set is not (e.g. internal) ? ...more >>

I am getting error at the time of compilation, However application runs = successfully 'System.Web.UI.WebControls.DropDownList' does not contain a definition = for 'SelectedValue'. It is giving error in following line. ddl.SelectedValue=3DddlSelectedValue If I change this to=20 ddl....more >>

Does anyone know of any database engines out there that can be used with ..NET. I seem to be having a hard time finding reviews on this topic. thanks, The Bear ...more >>

Hi, I would like to know if the following int cr = 13 sw.Write(Convert.ToChar(cr)); int lf = 10 sw.Write(Convert.ToChar(lf)); Will give me the equivalent of a "Cariage Return" and a "New Line" in ASCII I know that the ToChar function uses Unicode so that's why I want to know if it is...more >>

Hi I am writing to file using a StreamWriter in a Windows Form application I must write different records with a specific length However, I have more bytes at the end (in my file) than the number of character that I wrote Why is that? Isn't each letter take one byte If not, is there a specific...more >>

Hi, I am wondering why my comments do not appear in intellisense. I have written the following method: /// <summary> /// testing /// </summary> /// <param name="stem">will this work?</param> public void test(string stem) { } If I compile/build this code, and try to ...more >>

Hi, Can anyone please tell me how to convert an object say, a System.Web.Mail.MailMessage object, to a byte array and then convert the byte array to a Base64 string? Any assistance gratefully received. Best regards, Mark Rae ...more >>

I read a book, Programming Microsoft WINDOWS with C# by Charles Petzold, which shows ho to set or get string and image to and from Clipboard. It says even a button object can be set or go to and from a Clipboard I defined a class, e.g public class AB string s int i public ABC(...more >>

Hello, What is the best way to accomplish the following. 1) An ASP.NET program (consiting of one file somepage.aspx) receives about 25,000,000 requests pay day. 2) The requests come from a limited set of IP addresses. 3) How to count the total number of request from each IP address per ...more >>

I keep getting the following error 'member names cannot be the same as their enclosing type' with the code below. public class HelpText { private string _textToDisplay; private string _cssClass; public string TextToDisplay { get {return _textToDisplay;} set {_textToDispla...more >>

Hello I'm trying to build a simple COM+ app in vs.net using C# and i cant register it in component manager..... what more is needed than this: using System; using System.EnterpriseServices; namespace COMTest { /// <summary> /// Summary description for Class1. /// </summar...more >>

Hi All, This may be a stupid question, and may not be the correct solution for my problem, but here goes. I want to include a datalist within a datalist, in order to effectively group items according to one of the columns in a dataset. For example: I have 2 artists and 7 items. I want to ...more >>

I want to create a form with a few text boxes, labels, etc, and then use that form on a tab control, and re-use it as a stand alone dialog, can you drop forms onto forms and into dialogs like you can in Java? Thanks in advance! Derrick ...more >>

I keep seeing code like this in tutorials: public void Start() { Thread thread = new Thread(new ThreadStart(Callback)); thread.IsBackground = true; thread.Start(); } This seems erroneous to me. Surely thread is then subject to garbage collection, since it has a reference count of 0 a...more >>

Does anyone have any sample code for a multi threaded form that refreshes itself while an extended operation is executing: Example: I am updating a local dataset which could potentially have 1000's of records. I would like to update a label in the meantime but the problem is that the form se...more >>

Hi, Sorry I am new to object oriented. I was trying to build a class from which I could retrieve DataSets, = DataReader, execute SQL, etc. Some kind of SQL class. I thought that = creating methods such as "RunSql" and "RunProc" would be a good idea, = but then realized that it is not poss...more >>

I have been searching for information on getting the Global Address List from my exchange 2003 server to create a control that will display this information. I have read to use the directoryservices namespace, but then I read elsewhere that CDO works better. I would greatly appreciate some ass...more >>

Could anyone give me a code sample for launching a XSLT transformation embedded as assembly resource and which in turn references (xsl:include or xsl:import) other embedded XSLT scripts? I have managed to call an embedded XSLT script and also to extend it with my own functions via AddExtensionOb...more >>

With who way I can remove the focus from a DataGrid Control using the key Tab in a WinForm in C# ? The key Tab transports the focus in the next column of DataGrid and no in the next WinForm Control.? Thanks ...more >>

With who way I can remove the focus from a DataGrid Control using the key Tab in a WinForm in C# ? The key Tab transports the focus in the next column of DataGrid and no in the next WinForm Control. ...more >>

I know that OpenGL is written for C/C++ programming languages. How about in C#. How would we display 3D graphics in C# ? ...more >>

I have code like this: SHDocVw.WebBrowserClass webCtl= new SHDocVw.WebBrowserClass(); object theURLobj; string theURL="overview.htm"; theURLobj= (object)theURL; object nullObj = null; webCtl.Navigate2(theURLobj,nullObj,nullObj,nullObj,nullObj); //GIVES ERROR : Argument '1': cannot convert ...more >>

I am developing a web form that has several labels on it. I want to show information from a database in the labels. I have built the select string programatically. Since the label control has no data source property, how can I bind the label control to the data source? Thanks, Dave...more >>

Does anybody know what this means? *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it!...more >>

This should be easy but I'm drawing a blank. I have N arrays of strings. Each array has X elements. I need to output every possible combination of these strings as follows: 1) Array1 = {"A"} 2) Array2 = {"B", "C"} 3) Array3 = {"D", "E", "F"} The output should be: A A.B A.B.D A.B.E A...more >>

Hello, I want to show progress to the user while some method is running so I thought I'd use a progress bar. But I don't see how I can do this without writing GUI code in the model? In Smalltalk I would fire of notification exceptions that a progress bar would catch, increment progress, ...more >>

Hi, In a winform application (in C#) I am trying to write to a file with the following: String filepath = @"C:\Documents and Settings\MyAccount\MyDirectory"; FileStream fsCurrentFile = new FileStream(filepath,FileMode.Append); StreamWriter sw = new StreamWriter(fsCurrentFile); But I get t...more >>

A little preamble A year ago I had a very odd bug in my program, in an if clause it picked and executed the else statement even though the if clause should evaluate to true. Normally you know that it is you who are doing something wrong, but not this time. Contacting microsoft and providing them wi...more >>

I just need to host my HTML file within my WINFORM. I am sure there are articles on that, but I cant seem to find one or a simple KIOSK sample. ( No interaction, just view ). Thanks Andrew...more >>

Would anyone out there tell me how to make my C# datagrid wrap the text in the cells. I haven't seen a good how to out there that does this. I know it has something to do with using styles but haven't got styles to work right yet with my grid that get's dynamically populated by xml files. H...more >>

i am not able to connect through my modem if i use win xp but if i use win 98 ican (internal modem )could you help me ...more >>

Hi, From my understanding DataSet is used for disconnected data access in ADO.NET. However, I haven’t come across an example to use continuous data access with ADO.NET using C# . Is continuously connection possible and allowed in ADO.NET and Is there a simple example available? Thanks....more >>

I'm creating a Windows App in C#(Smart Client)that calls a webservice. The webservice returns this: <?xml version="1.0" encoding="utf-8" ?> <table id="klasse" records="4792"> <record locator="1"> <KlaKey>04424</KlaKey> <KlaOms>(Niet in gids of internet)</KlaOms> </reco...more >>

Hi, Is there a way to lock a combobox ( pseudo read-only) for direct text editing, such that it only can be changed/edited by selecting one of the values in Combobox.Items. Best regrets Jesper...more >>

What is the best way to return to the calling code when calling a asynchronous i/o call in C#. I have in other situations written systems that were totally event driven so the callback fires an event. My initial C# attempt has involved the callback re-calling the origination function with a para...more >>

Hi Does anyone know how to remove the link between Visual Studio, and SourceSafe? Without manually editing the registry? Thanks in advance Kind regards D...more >>

I'm writing here in hopes that someone can explain the difference between the new and virtual/override keywords in C#. Specifically, what is the difference between this: public class Window { public void Draw() { Console.WriteLine("The WINDOW Draw method is running!"); } } class...more >>

I have two applications, and they use the same xml doc as a data exchange channel. I mean each application holds a reference of this xml doc. each can change the xml doc, in the mean time the other can get node-changed events. how should I implement this senario? THANKS! ...more >>

I know with SQL you can create a datatable with an SQL string, but is there anyway of creating an entire database using an sql string and some sort of command line program? (Command line; see: program i can run, pass an SQL string into and execute without any hassle) If it is not possible with SQL ...more >>

I want to do mouse drag event in the image button of Web form, have any method for me to use to do that event like java using C#? thx for help!!!...more >>

I'm building an array of strings on the fly from a database. What is the best method for eliminating duplicates? (I can do this before or after the strings are added to the array) ...more >>

I got this problem for the web application I try to access files on a remote server. string[] dirs = Directory.GetDirectories(@"E:\vehicles") E drive is a map to a network drive. I get the DirectoryNotFoundException. How do I solve the problem or the is another way to write the code Thank yo ...more >>

-- -- ...more >>

Often you don't wish that clientcode does not depend on a certain implementation of your methods: class MyClass { public IList DoIt(){return new ArrayList();} } clientcode could now cast the return value in Arraylist. In a later version you may find it more effective that your method retu...more >>