Hi, I am trying to implement the following: Two combo boxes on a Winforms form, the first has a list of parent categories, the second is children of the parent, the child list changes contents depending on the selection in the parent. I'm trying to do this properly using databinding but I'm finding a strange quirk with the ComboBox con...
I have two projects. One is working and the other isn't however the differences between them is nothing that I think "should" be of any importance. The first project is the one that is broken and it is the one I am trying to fix. The second project is a little sample project that I created when the first project just won't work at all. O...
I have a database that I've converted over to 2007 Access. I ended up rebuilding the Combo boxes. They all work fine in the active databae however as soon as I close the database and reopen it - they don't work and a number of errors are displayed.. If I create a second combo the same way -Then both combos start working... but once ag...
In Asp.Net Combobox, there is a useful property, AppendDataBoundItems, that causes whatever items are bound to the control to be actually appended to whatever "statically" added ad design time. This is useful for "default" values that the user can specify when no item in the available ones meet the criteria, or to specify a special "null...
I have a ComboBox that doesn't seem to update the SelectedItem/SelectedValue. The ComboBox ItemsSource is bound to a property on a ViewModel class that lists a bunch of RAS phonebook entries as a CollectionView, then I've bound (at separate times) both the SelectedItem or SelectedValue to another property of the ViewModel. I have added ...
I need to switch between the CBS_DROPDOWN and CBS_DROPDOWNLIST styles at runtime. It looks like the only way to do this is to re-create the control. So I have the following code: CRect rect; m_Combo.GetWindowRect(&rect); m_Combo.DestroyWindow(); m_Combo.Create(CBS_DROPDOWN | WS_VSCROLL | WS_TABSTOP | WS_VISIBLE, rect, this, IDC_MYCOM...
Hi All, We're trying to alter the DataGridViewComboBoxCell so that when the user expands the dropdown menu, inactive items are displayed in grey text. I've found out how to do this by creating a new object, which inherits from DataGridViewComboBoxEditingControl. The problem with this, is that I'm not sure how to tell the comboBoxCell,...
I have set up a dialog with several tabs. One of these contains twenty combo boxes, each with over 100 items, added like this : foreach (var x in collection) { string text = FormatItem (x); combo.Items.Add (text); } so there is nothing fancy at all with the items. They are plain strings and the combo boxes get filled when the ...
I'd like to know if there is an event for ComboBox in Visual C++ that I can utilyze for doing something when mouse passes over the items of the combobox. Thank you ...
Hi Guys, I'm writing a front end to a database, presenting options as comboboxes. And I need to be able to return nulls to the database. I have a solution at the moment which involves 'fudging' a record into the query to populate the Datatable, then detecting the selection and hard coding null into my update statement if this item has...
how to hide or disable items in one combobox on the basis of selected item in another combobox in vb.net? ...
I'm trying to get a WPF combobox working (inside the WPFToolkit Datagrid), and I'm having trouble getting all the pieces aligned correctly. I'm using Linq to Entities, and I'm setting the overall datacontext to the results of a Linq query: private void LoadDonationGrid() { donationGrid.ItemsSource = from donations in entities.Don...
Vista introduced the new Common Item Dialogs for opening and saving files that supersede the old Common File Dialogs. Custom controls can be added by utilizing the simple IFileDialogCustomize interface. One of them is a standard ComboBox which is non-editable. Is there any way to create an editable ComboBox or modify an existing one (by ...
I have some elements in a ComboBox (WinForms with C#). I want their content to be static so that a user cannot change the values inside when the application is ran. I also do not want the user adding new values to the ComboBox ...
I want to connect a binding source to a list of class objects and then objects value to a combo box can anyone suggest how to do it public class Country { public string Name { get; set; } public IList<City> Cities { get; set; } public Country() { Cities = new List<City>(); } ...
I have the following problem: there is a class with a couple of string properties there is a collection of such class entities That collection is shown in tree on the left of some windows and details shown on the right. I'm binding string properties of selected node to comboboxes in details. First combobox always have the same Ite...
Is there any equivalent to this when a combo is data bound? I've been through this hundreds of times before, but I'm having a brain freeze moment. ...
I have an editable ComboBox component and I want to reference the TextInput that is shown, in order to programmatically select the Text in it. This is very straightforward on a TextInput: private function selectNameText():void { nameTextInput.selectionBeginIndex = 0; nameTextInput.selectionEndIndex = nameTextInput.text.length; ...
The following displays a ComboBox with the text "Select One": *This is pseudo code <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"> <mx:ComboBox prompt="Select One"> <mx:dataProvider> <mx:Array> <mx:Object label="Obj 1" /> ...
When you click on a ComboBox, you can select an item by typing on the keyboard. For instance, if the ComboBox contains an item with the label "Luke Skywalker" and you type "L", it will automatically scroll to that item and select it. Is this possible in a PopUpMenu? ...