I'm embedding IE in my app, and I want to display a toolbar with the back, forward, stop, home, etc icons of IE. Is it possible? Or is there some (C) problem? If possible, where do I get them? ...more >>

Hello, i want to temporary disable the listBox object's selectedItemChanged event. how can i achieve this? Regards, Ziver ...more >>

I used SmtpMail class sent email in asp.net before, no problem. Now I moved to Windows XP and Visual Studio .NET 2003. My ASP.NET app can not send out any email. The following exception is thrown: System.Runtime.InteropServices.COMException: The "SendUsing" configuration value is invalid. I don...more >>

I have a windows form MyForm and a picturebox PicBox on it. I need a funtion that return MyForm as object.(the parameter is PicBox. Is it possible to do that? (To get the name of a parent class from a child class such as PictureBox)?...more >>

Hi All, How do I create a custom paint treeview control or an owner drawn treeview control ? Any tutorials on this anywhere? Thanks, JJBean...more >>

I'm just wondering if there is way to detect if an object (Object type) points to an instance of a a derived class of a given base class. For example, class Base{...} class DerivedA : Base{...} class DerivedB : Base(...} class DerivedAA : DerivedA{...} class X{} bool IsTypeBase( Object...more >>

Hi all, you know how with DllImportAttribute you can specify a calling convention, can you specify one for a COM interface as well? Im trying to talk to some COM objects and it turns out they were compiled CDECL instead of STDCALL. As theyre all 3rd party I cant recompile them properly. My tem...more >>

Hi! This might be a stupid question. With what language was C# compiler created? I guess assembly. Or C? I am just curious. Sam ...more >>

Hi, I am using C# to develop Windows forms applications. I previously worked with VB 6. My question involves the following scenario. I want to create a splash screen, which on application start-up will be displayed and at the same time load some data from a database, and do some initializa...more >>

How do I add help strings to my .dll functions in C# -Lou ...more >>

Why do my Events defined in an Interface show up as procedures I have this so I can use it as a COM object in VB6. The object browser in VB^ does not show it as an event (with the lightning symbol) but as a procedure???? All the other definitions show and work correctly. public interface IMyI...more >>

How to set an user environment variable from C#? -- Johnny ...more >>

I have a C# WinForm application (.net 1.0). On my Menu and Buttons I use the '&' (in the .Text properties) for Hotkey access. No biggie. The strange behavior is that the '&' is converted to the appropriate underscore while in design mode BUT DOES NOT appear at Runtime. At runtime the H...more >>

Hello I'm sorry for mistakes - my English isn't very well. I've got the problem with sorting objects in ArrayList. If I put there only strings, Sort method works great, but it doesnt work when I put there objects (even if ToString method is override in object class). I think that i have to ov...more >>

I am developing an application for use on laptop computers. I need to be able to programmatically determine if the laptop is connected to the network. If the connection exists I want to use the database on the server, otherwise I want to use a cache on the laptop. I do know the address of a...more >>

yes i want to get beyond the basics of .NET remoting at least the one thing that im quite interested in is what goes on at runtime, for example when a client invokes a remote method how is the channel formatter sink at client side going to start doing its job (how does it get called )? and the ...more >>

I have an odd question that I'm hoping someone can help with. I simply (or not simply?) need to enumerate through all of the data types in the .Net framework. I do understand that if this is possible, it will take a long time, and I really don't care :) I need to go through all of the types, lo...more >>

I have a ASP.NET app that I want to add user login data and use a Primary Key for an UserID number now I tried INSERT INTO SQL statement(I didn't include the Primay Key column in both (...) for the stamement) but the ASP.NET app debugger show that the statement is trying to set the Primay Key co...more >>

I'm new to this type of programming, so please bear with me. I just came over from Top Down style Pascal. (Yes lots of books, evidently the wrong books). My program will read data from an ADC card, and then grabs some readings from the serial port (PLC) each time the timer fires its event set...more >>

We have developed a large C#, MDI application. One of the components of the application is a document assembly/script execution engine (ie a small language that we have developed). This brings up a series of modal dialogs when running scripts. What we want, is to run this execution engine on a...more >>

Is there some equivalent to Exit Sub in C#?...more >>

I made a class that extends DataGridColumnStyle. In the Paint override I draw a border around each cell in the column. All cells look fine except for the last one (final row). The lines I draw in the far right and bottom of the cell don't show. I can draw 1 pixel up from the bottom and ...more >>

right now, for printing HTML in .net I use a AxBrowser and I do ExecWB(SHDocVw.OLECMDID.OLECMDID_PRINT, SHDocVw.OLECMDEXECOPT.OLECMDEXECOPT_DONTPROMPTUSER) I then call Application.DoEvents() in a loop for 1 min and hope all of it was spooled. Unfortunately, I'd say for every 600 times I use t...more >>

does anyone know where the docs are (or sample code) to register an extension so that FileExplorer launches your application when the user double clicks your file? i havent seen this in the dotnetframework itself.. thanks in advance! ...more >>

How can i do a time out based on seconds or milliseconds. I need to exit loops based on a time value. The VB6 equiv is: Dim markTime As Date marktime=Now If DateDiff("s",markTime,Now).2 then exit do Thanks -Lou ...more >>

I am inside a timer thread and have found that File.Delete is not blocking. File.Delete(x) Checkitexists(x) = true Checkitexists(x) = true Checkitexists(x) = false Not a problem but it would be nice to be warned in the documentation. ...more >>

Hello, I have done a little VB Programming and now I am giving C# a try. Right now I am working with Dataset and DataTables and there are a couple of compile errors that I would work in VB, but are apparently different in C#. If I want a table from a DataSet, in VB.Net I would enter the co...more >>

hi I am currently developing an Access DB driven windows application in c#. I need some help on design ideas. There are two ideas I am considering. 1. Use dataset. 2. Have a middle layer. Map each table in database as object(for example, Table customers would be mapped to Customer object). Use...more >>

All I wanted to do was implement a web service where I'd receive an XML document and return one in response. I'd already figured out how to use XmlReader and XmlWriter classes to do the XML work I need to do. And all that fancy ASP.NET serialization really got in my way. Reading articles by ...more >>

Hi, When only the "runtime" (dotnetfx.exe, 20mb thing) is installed, I dont see the gacutil any where which is installed with the framework sdk or vs.net. I need it to register some of my comps to the gac. How do I do it ? I dont wanna use installer for registering my components. Regards n th...more >>

Hi all, I was wondering if anyone has found a way to represent the following expressions 'AS IS' using the CodeDom: 1. if(!collection.Contains(value)) - negate an expression 2. i++ or i-- - increment or decrement operator expression I can re...more >>

The MSDN documentation says that if you dont compile with DEBUG or TRACE flags then you cant use the BooleanSwitch object. is this true? If i have a BooleanSwitch wrapping a conditional statement and build for RELEASE, and then turn my BooleanSwitch on to true, will the condition exec...more >>

Hello Newsgroup, I am searching for function which returns me filename from a string that has the file + filepath. ( string sFile = "C:\DIR\SUBDIR\TEST.XML" => TEST.XML) Is there a functional class for this or what have I to do? Thanks alot ... ...more >>

I'm trying to change the file where the application starts. I moved the main method to the code that I want to start the app and I removed the main method where it use to be. But now I get an error saying the previous file does not have a a 'suitable main method'. How do I get VS.Net to recogn...more >>

Hi All, Can I set individual nodes to certain fonts/colors if I like? and how do u do this? Thanks, JJBean...more >>

Does anybody know any reason which could cause Ms. word automation to crash? I try to call word automation to open a document and use find and replace function. For some reason it works but I don't know why it crash some time. ...more >>

I'm trying to use the ErrorProvider in order to validate my form. This is working well except that in the event of a failure on my modal dialog, I'd like to keep the dialog open. I open the dialog like this: if (formOptions.ShowDialog(this) == DialogResult.OK) When the user clicks on "S...more >>

using System.Data; using System.Data.SqlClient; //etc... SqlConnection conn = new SqlConnection(connString); SQLDataSetCommand myCmd = new SQLDataSetCommand("select * from Test;", conn); DataSet ds = new DataSet(); myCmd.FillDataSet(ds, "test"); Compile Error: The type or namespace name...more >>

The scenario: ------------- I've created a simple COM object according to a tutorial I found: http://www.csharphelp.com/archives/archive281.html It automatically creates a Type Library (TLB) so that I can hook into the object using the virtual table provided in the tlb file. On t...more >>

In web applications (VB), you can store your connection string in the web.config file and then you can use the ConfigurationSettings.AppSettings ("EntryName") to retrieve the information. Is there an equivalent for windows based applications (C#)?...more >>

In a simple Windows forms application, the main form is called Form1. Within this form's class, I refer to the the running instance of this main class as "this" as in this.Text = "NEW TEXT" I want to do something like change this Text on the Form1 window from within another class. Tryin...more >>

I've an XML document that has HTML data inside one of the tags (with < & > encoding as &lt; etc) I'm Transform()ing the document using output method="html", but I get the &lt; encoding instead of < > and friends. How do I make this work? If I just throw the HTML data (it's well formed) to the d...more >>

When our staff are logged into a computer on our domain, they're still prompted for their domain login and password to get into our ASP.NET application in Internet Explorer when using Windows Authentication. Is it possible to avoid having the user to login again?? Thanks in advance. Mark ...more >>

Hi, I referenced Microsoft.mshtml in one of my projects. (Visual studio .NET 2003) The application is running fine on the developing machine, but when I distribute it to other machines with framework 1.1 installed, I always get the error message "File or assembly name Microsoft.mshtml, o...more >>

I am trying to replace the nested table tag in the follow string[1] using a regular expression, but I am not having any success. I am new at using regular expressions, so I am sure I am just overlooking something simple. I thought <table.*>.*<table.*>.*</table> or some variation of that woul...more >>

Hi all, I’m trying to read a values out of the ‘authorization’ host header. I can get the values easily enough, but the ‘authorization’ header is somewhat allusive. For connections requiring authorization the process appears to flow: Client -> Server [request] Client <- Server [401...more >>

I need to store an encrypted connection string in the web.config file. I have found several examples on the Net but nothing specific as to how to accomplish task. Thanks in advance, Dave...more >>

How can I determine the physical location of the stream reader pointer within a file? I need it to start reading data from that position when the file is read at a later time. I don't want to have to go back through the data that was already read. Any help would be appreciated. Thank...more >>

Hi Is Microsoft's Sqlhelper.cs (Microsoft Application Blocks for .NET - Data Access) Thread safe? The documentation has no references to threads. Thanks Dan...more >>

I want to show a dialog and when the form (dialog) is closed, return to the calling form. The calling form should then be able to pass the child form to another object with the form as a parameter. For example, FormOptions formOptions = new FormOptions(); if (formOptions.ShowDialog(t...more >>

Hi all, I'm trying to design a control which would display the thumbnail of a specific file (FileName property), just like the windows explorer does, i.e if no thumbnail is available it does show the large file icon. I suppose I can use a Windows API to do this, but I just can't find which o...more >>

Hi to all... When i open a file dialog and the user has selected a file, the open file dialog remains like thinking a lot cause a file is too large... How can i force to close the file dialog? Thanks Josema. ...more >>

Hello, I have the Visual Studio .NET installed under Windows XP Pro, in my laptop. Right now I learn C#, and I need an access to any available database, just for practice. It seems that I can use the Server Explorer (built-in in the Visual Studio .NET), but the problem is that the Server E...more >>

how can I add screen font names to ComboBox?...more >>

I have a directory which I want to be watched by the file- watcher. Now I have a question. I want this directory to be selected once and then be safed so that everytime I start the program I dont have to load it again. So that it is printed into the textbox and only changed if necessary. C...more >>

Hello, I have the following situation when trying to localize my software: I have BIG solution with about 80 projects. In one of the projects I have a number of dialogs (the dialog project :-) ). I have decided that I do not want to use the "form"-mechanism (using the property "localized=tru...more >>

Hi!... If i have an string like this "hello world" (with the quotes) who can i make a replace the quotes by the same in HTML? I try this: word.Replace(""", "&quot;"); but shows me an error... Thanks. July....more >>

i am doing some research on .NET technology. Our team is developing a windows application and the server application connects to a web service. However, the web service is not reliable enough so our team leader wants us to create an application that queues transactions from the server appl...more >>

Can I compile c# on win 98? Thanks...more >>

I am doing calculation in a data grid and I get the following error message: "Input format not in correct format". The following is the code in c# private void dgSalesInvoice_CurrentCellChanged(object sender, System.EventArgs e) { decimal result = 0; decimal price = 0; d...more >>

This code is used in a simple example calculator. It has a text box that displays the result. It performs addition, subtraction, multiplication, etc. on two operands. For the operands it accepts digits 0..9 and a decimal point. The insert() method isn't very clear to me. Can anyone help me conve...more >>