hello can i make to captur the key down event on cell's datagridview?? thx ...more >>

I am trying to create a custom DataGridView control that displays data from a DataSet, but with the additional functionality that it shows "headlines" in the data. Example (pardon my lack of ASCII art skills): --------------------------------- | Name | Age | Oranges | ---------------...more >>

Not sure if this is the correct forum, but here goes. What I am trying to do is open up a PDF file from my application, but can't seem to figure this out. I can find the path and determine whether the file is there, but not how to open it. I would also need help on how to determine if acroba...more >>

Hi, What MS recommends regarding naming .NET executable files? Is it better to name my assembly as MyCompany.MyProduct.exe or MyProduct.exe? Is there any guidelines from MS? Specifically, if the product contains many assemblies (exe + many dlls). Many thanks in advance! Alexander...more >>

Hi anyone and everyone, Could anybody tell me clearly wats the use of PostMessage and sort explain to me in simple english...Its just that i searched lot of places and i am still not getting it right... Regards, Jacob ...more >>

Is it possible to attach to an open process and perform automation on it? I have an application that needs to manipulate Excel files extensively. Most of the manipulation goes on with Excel application hidden. But sometimes I need the user to edit the Excel files. Before parsing the file again, ...more >>

I am looking for some references to any user interface design standards, particularly those for .net / winforms applications. I am developping an application for a sales company (large number of of order entrys a day, new and experienced users). I have read several reports of people like Jacob...more >>

Hi all, I recently installed framework 1.1 and .net studio 2003. I am facing strange problem while displaying messagebox. I created one form and added one button control. On button click i displayed one messagebox. But while executing this application, content which i set in messagebox are...more >>

I have a problem with Application.Idle event. It's not being called when an application (Windows Forms) is without focus. If you pass with mouse over the application's form (without activating it) Application.Idle *IS* being called. No mouse over form and no focus -> no Application.Idle b...more >>

Hi, I have an app with a Form whose TopMost property set to true so that it display on top of everything else on the desktop, including the Windows TaskBar. This form's ContextMenuStrip property is set so that when you right-click the form, it displays this as the context menu. So far so ...more >>

We have an app which can have a number of forms launched via the main form. We do not wish these other forms to be minimised when the main form is minimised, so we have set TopLevel = false on these forms. However what we find is that if we launch a modal dialog from the main form, we can stil...more >>

I have a question about how well resource files and the Resource Manager handle complex objects. Can complex objects be serialized into resource files and consumed by applications using the Resource Manager? Can objects such as a toolbar be serialized into resource files, rather than storin...more >>

I would like to provide the users of my Windows Forms (2.0) app with a 3-step wizard. What is a standard practice for building the wizard: one form with 3 GroupBox controls (with only one visible at a time)? Multiple Forms? Something else? I'd prefer to avoid a tabbed dialog. Just looking f...more >>

How to change the grid (vertical and horizontal lines) color of a TableLayoutPanel? Thanks for your help....more >>

I have a context menu strip. I can Add elements to its "Items", but there is nothing in there to add a sub context menu strip. Menu Item 1 Item 2 Sub Item 1 <-- impossible to add! How do I achieve that? There seems no API's to do that and the internet is simply "empty"...more >>

I'm running an SQL Server DTS job class from a windows form. However, once the DTS class call is made, the form is inaccessible or all the controls are gone and the form is blank until the DTS class process completes. I'm using Application.DoEvents(), but no go. Does this need threading? ...more >>

Hi, Just need a little advice. Id like to build *dynamic* context menus for tree nodes. I'm pretty versed in building context menus and attaching them to tree nodes. My question is, what event to I "capture" in order to build the tree node menu in real time? right click on a tree node? o...more >>

Hello, I have an application that uses my.settings to hold a boolean value if the program has been setup (IsProgramSetup). When it is installed the value is False, and the first time the application opens, an extra process is ran. When the process completes it sets the my.settings.IsProgramSet...more >>

I am developing a touch screen application and as such, we have minimum button size requirements (for example, the touchable area of a button has to be at least 9mm^2, etc.) Now, if the user changes the resolution, what can I do to maintain my button sizes? ...more >>

Hi folks, I have custom painting code that renders data from a datatable. The datatable can be refreshed with new rows being added and the old ones being deleted. As this happens async, I frequently get the nasty red cross on my controls. What is a good pattern for handling this scenario? D...more >>

Hi, I'm writing an application that uses a PictureBox. When the mouse cursor is above the PictureBox the OnPaint-Method uses DrawString to write some information into the PictureBox. Since I do not know what the image will look like I do not know which color to choose for the text. I think ...more >>

Hi all, I have created an MDI application. I would like to open a windows form, from a child window of the MDI application, that is modal only to its parent (not to the whole MDI application). Can I do that and how ? If I use the Form.ShowDialog() method, then the form opened is modal ...more >>

Hi, I need to create an application in C# that will be fairly simple from a UI prospective and that will be able to retrieve some information from a db. The overall look and feel should be nice but not too sophisticated. There are two areas that will need to shine though: first a datagrid which...more >>

I am developing a Windows Form application that uses a SQL Server Express 2005 database, which it connects to using the AttachDBFilename property. That works well when you know where your database file is. I would like to run some queries against the master database in my SQL Server Expres...more >>

I have a multi-form application that uses a treeview for navigation, which checks the NodeMouseClick event and simply issues these commands: theNewForm.Show() : Me.Hide() ....depending on the node the user clicks, of course. My problem is that when the form is shown it doesn't have focus. ...more >>

Hello, when my application shuts down via Application.Exit() I get a message box with the text ["unknown software exception" 0x80000003 on .....]. In the application I use DirectShow (via directshow.net) and managed DirectX. Besides that I start a tcp listener in a seperate thread but grace...more >>

Hi , I am writing a program that part of than program if to add a new network drive to the user. The adding part i know how to do (by win api "WNetAddConnection2A") but i want to check first if this path (network path) exist of his computer, if it does , what is the drive name. to do this i ne...more >>

Hi, I have a textbox and a listbox and I handle keydown events in the textbox. I'd like to pass page up/down events to the listbox if the focus is on the textbox, so that the default handler of the listbox handles them. That is I want to be able to scroll the listbox from the keyboard even ...more >>

What I have is a menustrip and inside the click event is dim t as new form2 t.show 'We are in form1 me.close and while it shows form2 I want to close the form where the call is coming from. In this instance the form1 is where the user is clicking the menu item. But for some reason ...more >>

I recently released an app that looks and works fine under any desktop resolution setting, but have discovered that if a user's machine has a DPI setting above the standard 96 DPI, my forms are distorted and some controls are even clipped, that is, off-screen. This is especially painful when t...more >>

Hey all, I have a problem where I need to manipulate the data that is about to be put into the clipboard after pressing CTRL+C - but I am unable to find anything on the net outlining how to go about this... I know about GetData and SetData - but am unable to fully TRAP the data being copie...more >>

I have a windows form that displays another Windows Form, which in turns displays a SaveFileDialog when a certain menu option is selected from the toolbar. When the SaveFileDialog opens, I can't use it. The focus is set to another window, and when I click on the SaveFileDialog, the focus is se...more >>

I am using the DataGridView in virtual mode. I respond to data needed, RowErrorTextNeeded, and such. I have done a number of these sorts of apps just fine. Trying to indicate error conditions for selected rows which I am about to perform a complex operation for, showing a different error perh...more >>

In a WinForms app, how to implement the analog of global variables in a VB6 app ? ...more >>

I have an empty, invisible form which is just used for receiving windows messages from other applications. I have overridden the WndProc like so: [System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust")] protected override void Wn...more >>

Working w/ someone in my company. We've both developed a project in VB.NET, and now we want to merge them into a single project/solution so they can communicate with each other. The communication is fairly simple stuff (e.g., if user selects a row in a DataGridView in one form, it selects a corr...more >>

Hi there I have an TableLayoutPanel with one row and two Columns. On the first Column is a Label with AutoSize on and Anchored to the Left. On the 2nd Column is, let's say, a Listbox with Docking set to "Fill". Now, if I set the Text from the Label immediately after the InitializeComponent...more >>

Hi, I'm developping a form that renders differently when hovered and trigger some processing when not hovered (leaved). The thing is, when I leave my form and another form from my application is underneath, it works fine, but if I leave my form and anything that is not from my application is ...more >>

I need to restrict ability to check/uncheck a System.Windows.Forms.CheckBox to only the actual box and not the label that is displayed next to the CheckBox. Any ideas? ...more >>

Anybody doing Click-Once deployment (VS 2005 WinForms app downloading and installing out of the browser) with IE 7 yet? Just want to know if there are any issues because I want to give it a shot... ....I don't have any extra machines available if things go haywire... -- Franklin M. Ga...more >>

I have an ASP.NET application with VB that I would like to use a confirmation box with, but only if certain conditions are met. In my case I would only want this msgbox to show up if a user entered a start and end range in a form, where the difference between the ranges is greater then 10. Howev...more >>

Hi, In VB.NET when used forms. I usually started them within an object, like so: Public Class Program Private Shared _mainForm As MainForm Public Shared ReadOnly Property MainForm() As MainForm Get Return _mainForm End Get End Property Public Shared Sub Main() ...more >>

Is there any way to change the order code is generated in InitializeComponent()? Or to keep designer generated ADO.NET code from trying to connect? If im dropping data adapters, connections, etc.. in the designer, as soon as the connection string is set any following code that references the ...more >>

I am developing a windows application that uses a SQL Server Express 2005 database back-end. I am currently connecting using user instances and I am also using a data access layer. I am trying to implement some automatic program fixing techniques during application startup; i.e. if the previ...more >>

Hi, There is no keypress event for datagridviewcell items... That is a nightmare. I would like to save data to database on the grid when users press to enter after changing value of a cell on the grid. But only cellleave event is running on current cell. I tried to create a custom cell and co...more >>

I am writing a VB.NET application that has a Splash screen. ..NET has autogenerated MyApplication Class. In that class OnCreateSplashScreen calls a shared property to get the Splash screen. In this shared property I instantiate the splash screen object. On this Splash screen I have a DevEx...more >>

Hi I'm looking for a Button Control that can act as Group Button with 2 state Pressed/Unpressed. So that when one is pressed the other are unpressed. Also i need some advanced visual features like : Normal Image, Over Image, Pressed Image I did not find this in C#... Any idea... Jonat...more >>

Dear Sir, I m develop a application in vb.net which update a live prices of stocks by a website named (www.nseindia.com) i m using datagridview control for this. Please give ur suggestion how can i bind my datagridview control to www.nseindia.com website for live updation of stocks. ...more >>

Dear Sir, I m develop a application in vb.net which update a live prices of stocks by a website named (www.nseindia.com) i m using datagridview control for this. Please give ur suggestion how can i bind my datagridview control to www.nseindia.com website for live updation of stocks. ...more >>

Dear Sir, I m develop a application in vb.net which update a live prices of stocks by a website named (www.nseindia.com) i m using datagridview control for this. Please give ur suggestion how can i bind my datagridview control to www.nseindia.com website for live updation of stocks. ...more >>