I was under the impression that you could use data views to have multiple sorts and filters on a dataset or data table. I want to bind two different combo boxes to different data views for a single table. I set the row filter for the first data view and bind the view to the combo box, I then...more >>

I have a WinForms application that displays a dialog. A button on this dialog causes a routine to execute that can take upto 10 minutes to run. This routine raises events to inform the dialog of it's progress. The Dialog updates the statusbar and a progress bar with the status it receives. ...more >>

I have discovered that setting tab order of controls is not as simple as it first appears. I am inheriting a base class for several of my forms. I have two different base class forms. They inherit tab order differently. In one case the base class tab order is marked read only when the form ...more >>

Hi, Is there any way that I can feed the path of a zip file to a vb.net windows forms/console app and get at the files within it? The zip file will contain csv files and I need to read them one by one for processing. Thanks, Sanjeev ...more >>

The Microsoft Forms 2.0 Multipage (FM20.DLL), can I use this and does office2003 has to be installed for my users computer to use it and/or does the lastest window update includes this for the windows os or for any office updates? Basically what I am saying is if office2003 is not installe...more >>

Hi, I using the axshdocview.AxWebBrowser control to display web pages. THis works fine via the navigate method for remote pages via a url. When I use a local file however i.e. AxWebBrowser.Naviagate("c:\somedir1\somedir2\somepage.htm") Relative image references are not shown. i.e. <img ...more >>

Hi, I have a floating EditBox (a TextBox on a borderless Dialog) over a ListView. I wish to capture the mouse events so I can detect if a user clicked outside of the EditBox. I show the floating EditBox as modal, so the underlying form with the ListView is deactivated. When I click outside the...more >>

SORRY I ACCIDENTALLY POSTED THIS IN THE WinForm Controls SECTION: I can not figure out for the life of me why my app / form hangs afte I do a show: Me.Show() While Not Done System.Windows.Forms.Application.DoEvents() End While To t...more >>

[Cross posted in dotnet.framework.windowsforms and dotnet.languages.csharp, because it could apply to either] I have a strange bug in C# using windows forms. To make sure it's not some bug with my code, I've gone back to a simple test app, and still see the same behavior. I have created ...more >>

Hello! I am using the Crystal Report in VS.Net , because I have many fields, so I must change the Report to Landscape view in order to all fields appear normally. Please tell me how to do it. I found nothing involed with this setting! Thanks! ...more >>

How can I ensure that the top most property (as displayed in the grid property) of the 'SelectedObject' is visible. For some reason, the property grid is scrolled all the way down so the very last property is visible. I need the property girdd to be scrolled all the way up so the very first ...more >>

Hi all, I want to temporarily set the background color of a text box, so I use my_text_box.BackColor = Color.BlanchedAlmond; Then when I want to reset back to the default (white on my system), I thought I could use my_text_box.BackColor = TextBox.DefaultBackColor; Unfortunat...more >>

I want to show the properties of multiple objects in a property grid in some meaningful fashion. One approach would be to have the properties which all objects have in common displayed normally and the properties which not all objects have in common displayed with the corresponding property...more >>

Hi people, I´m newbie in .NET and I´m using Visual C++. Can I to insert a windows form inside of another windows form like a panel? Thanks for help! Wellington Eliel Lopes ...more >>

I want to be able to call my forms from all over in my application, usually that is easy to do, but I am running into this. One form I can add in my #include header, and in my button click event it will allow me to declare a reference to it, and even intellisense picks it up, but upon compila...more >>

I am trying to close a form from a button on another form. and it is not working i am using code like: dim frm1 as form1 frm1.close. But it doesnt seem to work, please help...more >>

Hi [ Using C# in .Net 1.1 ] I have a usercontrol with a number of nested controls (listviews, etc... ). When the user clicks *anywhere* on the usercontrol I want the event to be handled by the usercontrol. At the moment if I click on the listbox, then the listbox grabs that click and i...more >>

Visual Studio 2003 .Net, C# windows based: I have a tab control on my main page, on the first page is a datagrid displaying records, on the second page is a detail page showing the record details for the record selected on the first page. The second page is for adding and updating the re...more >>

Does anyone know how to make a Windows Form based application be optionally always on top? Also, I need to remove everything except a single text box which I want to make available from any application by poping it on top via a hotkey. Alternatively I would like to make the Windows Form ap...more >>

FolderBrowserDialog often crashes on my Windows 2000 computer. Here is C# source code for a test case: using System; using System.Windows.Forms; public class InstanceForm : Form { private FolderBrowserDialog folderBrowserDialog; private String folderName; private MainMenu mainMe...more >>

All, We are trying to implement a 3-tier Client/Server Widows system in .Net. We have found that the middle tier can be implemented using Webservice or remoting. We are just wondering what other options we may have to implement the middle tier. Any help will he highly appreciated. Thanks, ...more >>

Hi all, I have a form that I have turned into a layered window (the layered window is opaque). Everything works great except that if part of the form is covered and then uncovered, the uncovered area is black. I have tried doing an invalidate() but it does not update the layered window. Do...more >>

I have a menu form that has a number of buttons that each launch a different form. The syntax is the same except for the form name is different. How do create a common function that launches a new form that excepts the form name as an argument? My current syntax: Private Sub btnNewSearch...more >>

I have an issue with a Child Form of a MDI Child staying contained within the Master Form. My first Form is called mdiMaster, which opens the mainMenu form with the following code: Dim MainMenu As New MainMenu MainMenu.MdiParent = Me MainMenu.Show() Then a button...more >>

The ShowDialogue method shows the form as an application dialog. How to = display the form as a system dialog? Mark...more >>

After setting Sorted porperty of combo box to true, data in the combo does not appear. I have combo bound to Datatable. What is the reason for that? -- Regards, Lalit Bhatia ...more >>

Hello group I have a winforms client application. The customer now wants to have access to information that is on a web page via https. We have all the necessary account and password, but the problem is when we need to confirm some data, the user have to leave his application go to the w...more >>

I just added a print and printpreview capability to my app. It's printing a nasty datagrid with hidden columns that may be filtered and sorted. Everything seems to work, but I'm having trouble with printing from the printpreview form. The preview looks right, I get the right number of p...more >>

Hi I am not able to Insert a value at 0 index after i set a Datasource ?? Any alternatives.. cmbDomain.DisplayMember = "KEYNAME" cmbDomain.ValueMember = "SETTING" cmbDomain.DataSource = ds.Tables(0).DefaultView Dim obj As Ob...more >>

Hi, I'm a completely new for VC++.NET programming. I made a MDI application with a toolbar on parent form, but I can't move the toolbar at run time. It seems moveable toolbar is called floating toolbar. I wonder how to make a floating toolbar with VC++.NET managed C++ instead of MFC? Tha...more >>

I added a form to my project to use as a dialog box. The form is simple, 2 text boxes, 1 checkbox, 3 labels and 2 buttons. It will eventually allow a user to reset a password, but I haven't added the functionality yet. I have the dialog created when the user selects Tools - Reset Password f...more >>

I'm trying to create a form with different levels of opacity. Is this possible? ...more >>

I read this article called "Windows Forms Data Binding and Objects" by Rockford Lhotka wich in an MSDN article. It makes a custom class that can be bound to. If a value in the class changes from code or an other control it needs to be updated in all bound controls. That´s where the PropertyCh...more >>

..I created a VB.net Windows application using Form1.vb as my one and only Windows form. When I go to run the application I receive the following exception: "An unhandled exception of type 'System.NullReferenceException' occurred in system.windows.forms.dll Additional information: Object r...more >>

Hello, I've run into a brick wall in working with a standard ListBox. I'm loading lightweight objects into a ListBox component - call them Elements. The Element class has an ElementName property and an overridden ToString() method that displays the ElementName. When I load Elements into ...more >>

I am working with MS Visual studio C#.net, .net framework 1.1. Do you have an idea, how can I use the ListView (details display mode), that it does similarly as an html table do? Or there is a better container which would fit my needs? What I need in the ListView is: 1. Above some subitem...more >>

How do I implement the kind of OLE functionality found in MFC (CRichEditCtrl, CRichEditView and CRichEditDoc) in a RichTextBox? Are there any samples available (e.g. Wordpad for C#)? -- Arild...more >>

Hi, I m using Menu in my vb.net application. I want to increase the text size, and font,change text color, increase the gap between two consecutive menu items. Is it all possible with the menu provided in vb.net? If no then how can I do this? Thanks in advance, RbanBph...more >>

Setting the ValueMember property of a ComboBox to a name of a property that is not browsable throws the following exception. System.ArgumentException: Could not bind to the new display member. Parameter name: newDisplayMember It works fine if I set Browsable to true. Has anyone encountere...more >>

I have bound a grid column to an enumeration data type. I derive from DataGridTextBoxColumn and override GetColumnValueAtRow and call a function I wrote to convert the enumeration value to a descriptive text for display in the grid cell. This works well. Even though the grid is not editabl...more >>

Hello! I designed a crystel Report and run normally in my Computer. But when I bring it to the user computer (The SqlServer name is diffirent). So My Report is not working. I want to know how to do to assign the Connection param to CrystalReportViewer dynamically in order to run the report in an...more >>

How do you get a check boxs to appear as one of the columns in a datagrid? many thanks in advance Rod ...more >>

I have an application where I'd like to be able to run multiple instances of a Windows forms application. Due to a heavy hit in our application startup code it would be beneficial to be able to have a single process with multiple instances of the form. Additionally, it would be useful to be ab...more >>

I have been developing WinForms apps in .NET for several years and have never discovered a good solution to this newbish problem. I frequently encounter a situation where I want to change the value of a control when the user changes the value of some other control and both controls are bound ...more >>

Hi, I have a MDI child Form that contains a couple of custom controls (both Panel based viewers), a DataGrid, and a PropertyGrid. Try as I might to have the DataGrid receive focus when the MDI child Form is displayed, the PropertyGrid always grabs it. I have registered an event handler ...more >>

Hi all, Anyone can tell me if the derived forms need to call the constructor of the ancestor Form ? Also it's needed to call InitializeComponent() from Ancestor form or not ? Sample: public Class AncestorForm: System.Windows.Forms.Form { Public AncestorForm() //:base() neede...more >>

Hello all - I am very familiar with sending mail through asp.net (using the System.Web.Mail class), but I do not have experience sending e-mail through windows forms. I would assume the syntax is probably the same, but perhaps the class or method of calling it could be different? Can this be...more >>

Hi! I'd like to know if Microsoft has published a guideline for GUI design for .NET applications (something about choosing the right flatstyle, fonts...). Thank you! Simone. ...more >>

I want to allow the user to add new rows. Not all columns from the bound data tabled are mapped (i.e. there are hidden columns). But some of those columns do not allow null. When I add a new row I get an exception: A first chance exception of type 'System.Data.NoNullAllowedException' occurr...more >>

I have a task to write winform application while writing the functions that return information, in a dll - for example opening a file. can someone please give me an example for function that opens a file (openFileDialog) that will be written in a dll file? Thanks a lot...more >>

Hello, I have created an application in vb.net. I want to show a chaild form on main mdi form. Since form contains many controls it is taking too long to get displayed completely and it also flickers. I have tried SuspendLayout and Resume Layout methods, but was not helpful. ...more >>

I have a parent and child datatable which i am viewing in a datagrid. does anyone know the event that is fired when the user expands the node to look at the child table? thanks. ...more >>

Hello, My appliccation saves form size and positions whenever they are closed so they can be shown at the same size and position when opened next time. My problem in here is that when it is used in Multiple screen enviornment, I can't understand whether the window is in which screen and I ...more >>

I mean like VS.NET fullscreen windows? I was thinking: simply remove the border, set maximized and topmost. however I will have problem with dialog then (which would be behind my window, don't they?) (uh?!) any other idea? ...more >>