Hi, Can a winform have 2 overloaded constructors? Thanks ushas ...more >>

I have a drawing application written in C++, and want to use it in a framework written in C#. Since the amount of C++ code is very large, it's unpractical to translate them to C#. So I want to use the window in C++ as a control in C#. It seems there are a lot of method to do this : 1. Rebuild ...more >>

I've created a custom component that is derived from the Component class. This component can be added to a form. What I've noticed is that I run into problems if I call methods on the component from a different thread than the one in which it was created. I'm aware that you should never access...more >>

How do I invoke the standard windows dialog which allows the user to browse the filing system and choose a directory or a file ? ...more >>

I have a windows forms app that interacts with a windows service that I made. My windows forms app can iteract with the windows service well. It can start & stop the service, etc. But one thing it cannot do is call the ExecuteCommand method of the windows service. I get an "access denied" err...more >>

How do I programatically scroll a RichTextBox to the end of it's contents ? ...more >>

My question on hand is to retrieve a list of running Excel instances to attach from a ..NET C# application. I did some research on the group and learned from Mr Yu[MSFT] of a code snippet that enumerating the ROT using UCOMIRunningObjectTable interface. My problem is that when I pass the...more >>

I have implimented a custom data grid and property gid on several of my forms. I find it really nice when updating multiple record. I select a dozen record or so and the property grid gives me the fields to change and the ones I change affect all. The problem is I have several customer compl...more >>

I have a multi page form, and in some processing I need the user to switch to a different page. This code doesn't seem to get the switch to happen. this.dsVehicle = this.oSingle.GetVehicle(lnKey); // update dataset for editing this.VehiclesPage.Show(); // sw...more >>

Is there an easy way to garner the build information from the assemblyinfo.cs file in my Windows forms application and then display that in a label or labels in an "About" box?...more >>

I have a c# winform application. I want to pass a file-path on the command line, however when the app checks the command line arguments, the argument has a '@' prefixed to it. Anyone know why? ...more >>

I'm developping in C#. I need to provide information between 2 form (formely Form1 and Form2) I need to do the following: Form 1 creation .... Form1 call Form2 passing information(way1) .... Form2 data validation Form2 unload and passing validated data (way2) .... Form1 unload Way 1...more >>

I am getting a very strange crash deep inside the S.W.F.dll when closing a window. Basically when the Window 'X' is pushed, or I call 'this.Close();' from inside the form, I get a crash inside the main WinForms DLL. I have done some deep debugging via the disassembly of that DLL, and it appear...more >>

Hie Can you please assist me on how to automatically select/check a radiobutton depending on a value from a SQL Server database. I have several groups of windows radiobuttons in VB.Net. This is easier done in a web application but not so obvious in a windows application. Thank you -- ...more >>

I created a BindingListView that subclasses from ListView ... when switch to designer mode I get ... The designer must create an instance of type 'System.Attribute' but it cannot because the type is declared as abstract. Poor designer. Anyone know how I can help him out? ...more >>

Greetings, I have an array of DataGrid classes. Each DataGrid in the array needs to handle the SizeChanged event. How do I dynamically accomplish this using vb.net? In other words, how do I programmatically set a handler for each DataGrid in the array? Thanks! --- Outgoing mail is c...more >>

Hi I have this application that I am fighting with for days now. Here is the whole project; www.infovis.biz/tasks.zip. Please run and press the new task button to see what I mean. Much of the code is either form taskvision or infragistics samples btw and requires netadvantage 2004 vol2. I h...more >>

I have a custom control A, that has two text fields and a datagrid object. the datagrid is populated within the control, quering the information from the database at the time of construction. Now I have a Form, with a tabbed control, let's name it B. On the object B we need to display N instances...more >>

Hello How do you get the control if the click event handler for ContextMenuItem was invoked by the assigned shortcut? In this case the SourceControl property may be incorrect if the context menu is shared by more than one control. The SourceControl will be the last control that displayed the ...more >>

I'm attempting to format rich text with C# by sending messages to the underlying richedit control. The text can be formatted by sending an EM_SETPARAFORMAT message. However, when I set the wAlignment to be PFA_JUSTIFY, it doesn't work. I know that this option only works with Rich Edit 2.0 or l...more >>

Hello I open a new form and do some stuff, and when I am done I want to call a function on the original form... how can i do this? Do I need to send in the calling form as a reference or something? if so, how exactly do i do this? thanks. **Form1:** public void UpdateSchedule() { ...more >>

I'm just starting to learn VB.Net (winforms) - having known classic vb for years... I was trying to build a 'dll compiler' just for grins, using the vbc.exe that resides in the DotNet Directory. I have a form that browses to that directory, and builds a string from it, adding "vbc.exe", alo...more >>

How do I programmatically find the most recent DotNet Directory on the machine of the app that's running? Is there a variable/method/property? ...more >>

Hello, I need a button control that will allow me to display mutiple icons/bitmaps simultaneously. Say for example you had a standard Forms.Button with text "Device 1" and you need to display small icons in each corner of the button to show state/status of Device 1. Is an owner-drawn butto...more >>

I would like to trap TextChanged events and validate them for correct values from values coming in from a pen panel. If the values are valid, I want to automatically tab to the next control. But.... How do I raise the tab event in software? ...more >>

Hello, Bitmap.MakeTransparent( ) causes some really wild graphical anomalies. This must me a bug. Does anyone know a work-around? Can anyone shed some light on this issue? To see this in action just do the following: 1. Create a new Windows Application Project 2. Add two buttons to th...more >>

I am trying to delete some controls from a windows form but the VS 2003 designer doesn't allow me to do that. Simply the Cut, Copy, Paste and Delete options aren't available. The form isn't readonly. I am just hiding the controls I don't want anymore but the form is getting clogged. Any help w...more >>

I have a progress bar which is nested control and I want to persist the design time properties of this nested control. I thought all I needed to do was mark it with the DesignerSerializationVisibility.Content attribute, as below: [DesignerSerializationVisibility(DesignerSerializationVisibility...more >>

Hi, I've got some custom control buttons created with circular gif images. When I place them on top of a panel using a .wmf file as its background I see the form's color poking through the transparent corners of my buttons instead of the pretty .wmf image. Any ideas why that would happen? ...more >>

Hi, I have a question. How to enter a new value in a combobox at runtime in VB.NET ?...more >>

Hi, I have a VB.Net winforms program that monitors some report folder. All works well in that respect. I have the program start 'Minimized' and I also have the program automatically start when the system starts. However, the program sits Minimized as a big block in the Task Bar (Bar at ...more >>

I have a multi-page form where I need to switch the user to the second page after I fetch it's data. Here is my code : this.dsVehicle = this.oSingle.GetVehicle(lnKey); this.PropertiesPage.Show(); But it doesn't work. Any ideas on how to get the switch of page? TIA. ...more >>

I have 2 forms Form1 and Form2 Form1 is the owner of Form2 and should activate it on Button1_Click Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click ' Create another form and display it Dim newForm As New Form2 ...more >>

Hi, I want to do something and I didn't find a solution yet. I want to have a webbrowser which displays HTML pages that are stored in my executable's ressources, using the res:// protocol to access them. I want to do it in VB.NET. I find that specifying 'Embedded Ressource' at the 'Build Action' ...more >>

Hi, Is there any codes or functions for ASP.NET that can set the focus on a control. e.g. after i hit a Search Button to find an employees information, i want the cursor to be on the control name of "LastName" like LastName.Setfocus??? Thanks Ed...more >>

I want to synchronise files between directories as part of my .NET application. Ideally I'd like to invoke an XCOPY-like operation which copies only new and changed files from source to target. Is anything like this available as part of the framework ? If not how do I invoke a windows command fr...more >>

Hi, I was wondering if the "default" property of a button has been changed to something else or if it has even been included in the .Net classes for C# as it was in VB 6?? Regards Darryn ...more >>

Sorry for the cross-post, but I wasn't sure which group would be best. I'm working with the UIProcess Application block in a C# WinForms application. I was testing a first go at it when I came across this error. I'm wondering if anyone has any ideas. [Error Message] "Error loading UIP conf...more >>

I've a CheckedListbox control on a windows form which displays a= number of items that I load dynamically=2E Now, when I go to= select (i=2Ee=2E check) and item in the list, if I click on the= actual text of the item, then the checkbox for that item is= checked as expected=2E If, however, I ...more >>

(Type your message here) Hi Folks, I got an old third-party application which is an executable= (=2Eexe)=2E I would like to simply activate this application in my= Winforms application=2E So as a first step, I drop a ?process?= control from the Component group of the toolbox on my form a...more >>

Hi, I'm loading a parent form, which launches a child form from its= OnLoad handler, but the parent window always finishes opening= after the child and therefore pops in front of it=2E How can I= wait until the parent form is fully loaded and visible before= launching the child? Thank...more >>

Hi, Thanks in advance for any help given=2E=2E=2E I need an enhanced type of list view where i can select a cell &= get its column/row/content information=2E A colleague has given me= a 'ListViewEx' example in C# which has the following files: AssemblyIinfo=2Ecs ListViewEx=2Ecs ListViewEx=2...more >>

This is the form "hierarchy"::::: Main Window (MdiContainer) - MDI child form - Form (this form's MdiParent has to be set to "Main Window", but how?) I open a little form from an mdi child window. When I open the form, I want to set the form's MdiParent property to my "Main Window",...more >>

I have a web application that copies a file from a mapped drive= to the local drive=2E Files are about 1MB=2E 'start code dim mSharedWorkingDir as string =3D "M:\2004\July\Word\" dim szFile as string =3D "AAPL071520040741AM=2Edoc" dim mCreatorDir as string =3D "d:\creator\" dim fi as filein...more >>

I have a custom control called, lets say, SportBillyComboBox, which inherits from ComboBox. When I add my control from the toolbox, I get an error (System.NullReferenceException : Object not set to an instance of an object) on my form replacing the control, but my newly added SportBillyComboBox...more >>

Hi I'm binding an array of objects to a datagrid. I then want to select a few of these items before proceeding to the next page. My problem is that I can't cast the DataGridItem.DataItem from the datagrind into a custom type. Here's the code: // this is the datagrid protected System.Web...more >>

Greetings, I have a large Paintbox control as the background of a form in= VB=2ENet=2E This paintbox control has various shapes on it and I= wish to detect when the mouse is hovering over a shape=2E This works fine for the first mousehover event but once the event= has been triggered, it...more >>

Hi. How can automatic open all PropertyGrid trees? Thanks Sonia....more >>

Hi, I have a very simple custom control (just a button with a bitmap background). Sometimes when I add several of the controls to a form and run the app the last one or two controls appear to lose their properties and are redrawn blank at the top left of the form. I finally noticed that w...more >>

Hello Esteemed Developers and Esteemed Experts, I have a background-running-thread in my application that is designed and developed at Windows Forms (.NET) by using Visual C++ .NET Standard on Windows 2000 Professional O.S. Whenever the required job is done in that background-running-thread,...more >>

Dear all I use a inherit controls to inherit a mustinherited control, however it can not be showed in ide with the error: An error occurred while loading the document, Fix the error, and then try loading the document again. The error message follows: The designer must create an instance of type , ...more >>

Hi All, I have a weather web service, if I do the following I get the data return OK as XML... Dim WeatherData As New weather.WeatherInfo.GlobalWeather Debug.WriteLine(WeatherData.GetCitiesByCountry("United Kingdom")) What I don't understand is how to consume/read the data. I presu...more >>

I have an application with a form that has bound controls to dataset.tables. I have an Add button that brings up a modal form and I'd like to work with the same instance of the dataset to insert new records and use combo boxes that are populated from that dataset. The dataset gets filled when the...more >>

Is there a way to insert a blank line (\n) into a DataColumn expression? i.e. Dim dc as new DataColumn("test1", Type.GetType("System.String"), "Address1 + '\n' + Address2")) I can't seem to get .NET to recognize the escapt character Thx, Joel ...more >>

There is a template to create COM components with VB.NET in VS.NET, but not in C#. Anybody know a template that I could use to do that in the same way it`s done with VB.NET? thanks, ...more >>

http://www.remotesoft.com/ Anybody tried the decompiler above. It seems to just decompiler any .NET code, even when using dotnet offuscator. Is there any way of protecting my intelectual property agains these decompilers? thanks very much. ...more >>

How can I capture an operating system message when changing the regional settings in control panel in order to refresh the interface of my localized application. And, How can I refresh the controls in the form without having to load it again? Just like MS Office does. thanks a lot. ...more >>

I am using a datagrid control currentcell property . I get the following error System.Web.UI.WebControls.DataGrid' does not contain a definition for 'CurrentCell'...more >>

Hi, I need to display multiple items, each has a textual description, icon and enable multiple selection. So far the ListView control seems to be the ideal control to use. However, another requirement is that some of the items will have a checkbox next to them while others will have a button ...more >>

I have a toolbar on a form. It has buttons like Close, Save, Cancel, Add, Edit, Delete etc. When the form is displayed the user can't save or cancel anything yet. and when the use clicks on add they can save or cancel but they can't do anything else. Should I make the buttons visible/invisible...more >>

Hi guys, I am doing the following and need the PK ID of the record I just inserted.. Thx in advance.. I am 1. Filling a dataset 2. Inserting a row 3. -- Need the just inserted PK -- 4. Making a online payment with the PK as a reference 5. If all is well (Payment side) Updating ...more >>

I have a Windows Forms application that can run as a SmartClient. I am able to share the application .exe over a LAN by doing the following: 1) Create a reaonly share on the folder that contains the .exe 2) Have network users connect to the share and run the .exe This all works, but leaves a...more >>

Some one help me out. I have a windows form.I added Panel to a windows form. I put a textbox in a Panel. When ever I try to get Parent of textbox. its always returns me the handle of Form not the panel. Is there any way to get the Parent Control of a control on the Form? Am I missing anyt...more >>

Using vb.net 1.1 I'm trying to draw an image to a form using the 'DrawImageUnscaled' method. it seems that some images are drawn to the correct size, and some are 10 or 20% larger and I haven't found anything in the different images that would contribute to this. All the images I'm testing wit...more >>

Hello: Im working on a a control that is kind of console, with three richtextboxes, two of them readonly for output and the other one, for input data, My problem is that whem some of the readonly have the input focus and the user press a key, I want the input focus and the key on the input r...more >>

I have about 20 code files, and I don't want to print them 1 by 1.... is there a way to do this in one click? Thanks ...more >>

I have an application that's failing only when it's run on a Japanese Win2KPro SP4 system because a form is receiving a resize event "prematurely", or at least before the form is prepared to receive it. With dotNet 1.1 installed, the application works as expected on US-English, German and Ital...more >>

Hello, everyone: I met a weird problem, I have a panel include one treeview and one button, I want to click the button and set the panel visiable=false. If I click the treeview first then click button, it works fine, but if I click the button before click the treeview, it causes problem because t...more >>

Hello, everyone: I need to set up my Windows media player replay automatically, but I couldn't find the loop property, could anyone help? by the way, when the endofStream event fired, it seems I never get this event fired even the player is stopped. Sincerely, haiwen...more >>

Probably a stupid question, but I'm just learning C# and .Net. I'm trying to create a "What's This" button on my form next to input box the user is supposed to fill in. I have the question mark up top working, but am trying to make the form as user friendly as possible. The code segment is as follow...more >>

Hi, I have a requirement where by I wish to load a set of bitmaps (and imagelists!!) whilst my application is running. I wanted to make it a little flexable by allowing the bitmaps (resources) to be distributed in a seperate assembly. The assmbly name etc would be specified in the config file. Th...more >>

Hello! I'm trying to generate a VB.NET code to trigger/make a mouse click. Can someone write me a sample code to do that? It'd also help me if you knew how to trigger a right mouse button click. Thank you!...more >>

Hi, I have multile windows application (exe)files. Currently I have multiple config files, one for each exe file. As all application are related, content of all config files are same. Maintaining the multiple config file is a headache. Is there any way that I can just have one config files for ...more >>

Hi, With wmi i don't know what patch are installed . someone have a solution to know who verifiy if one patch are installed or not. thank you nicolas ps : sorry for my bade english...more >>

I want to develop an applications in windows 2000. My entire form (Title bar, buttons, checklists,DropDown )should appear in windows Xp syle. Can anybody help me? ...more >>

hi!.. i have got 2 forms in my project and i want to change textbox1 value in form1 from form2 i did like that while form1 and form2 show mode Public class form2 dim form1 as new form1 form1.textbox1.text="MP" end class what is the problem there is no error but no events too ...more >>

Hi all, I want to store some global variables in WinForm application like in Asp.Net. For example, when user has successfully logged ini, userID and userName will be stired in global variables. How can I do this? Thanks! ...more >>