combobox

问题 I have a DataGrid with a DataGridComboBox column that works fine. It binds properly to the list of items, correctly displays the selected item, correctly selects an item, and binds the selected item's ID to the underlying row model properly. It looks like this: <DataGridComboBoxColumn x:Name="AssetColumn" Width="3*" DisplayMemberPath="Item" Header="Item" ItemsSource="{Binding Data.AssetDescriptions, Source={StaticResource proxy}}" SelectedValueBinding="{Binding AssetDescriptionID}"

问题 I'm a beginner in C++ (MFC) programming. So, I have two comboboxes: IDC_COMBO1 and IDC_COMBO2 . How can I simply get the selected by user value from them? I've read the MSDN, but I didin't understand the examples: int nIndex = m_pComboBox->GetCurSel(); int nCount = m_pComboBox->GetCount(); How must I declare m_pComboBox ? Thanks for answer. 回答1: CString sData; int nSel = m_NameListBox.GetCurSel(); if (nSel != LB_ERR) { m_NameListBox.GetText(nSel, sData); } Please also use DataExchange MFC

问题 I have a WPF application in which I have a combobox <ComboBox Margin="2,0,5,0" Width="178" ItemsSource="{Binding Animateur}" DisplayMemberPath="fsign_nom" SelectedIndex="0" > <ComboBox.ItemsPanel> <ItemsPanelTemplate> <VirtualizingStackPanel /> </ItemsPanelTemplate> </ComboBox.ItemsPanel> </ComboBox> the ItemsSource contains 20100 items , the problem is when I try to open the combobox to select an element, the application were blocked . the viewmodel class _service.GetAnimateur((item, error)

问题 I have defined Combobox's ItemSource in List object. I want to reach the ComboBoxItem by using FindName() method but it always returns null. I have tried ApplyTemplate() at the beginning and I also have tried to reach the Item using Combobox.Template. Here is my code. Any suggestions? List<string> subjectsList = e.Result; cbCategory.ItemsSource = subjectsList; cbCategory.SelectedItem = cbCategory.FindName("DefaultChatSubject"); By the way, I do not have any problem about the Items in

问题 I want to customize my combobox each item, same as font, background, etc. Is there any simple way to set custom background color of each Combobox item? 回答1: This is simple example to do that. In this example my combobox has some item same as color name (Red, Blue, etc) and change the background of each item from this. Just flow the steps: 1) Set the DrawMode to OwnerDrawVariable : If this property set to Normal this control never raise DrawItem event ComboBox1.DrawMode = System.Windows.Forms

问题 Basically my problem is in configuring a combobox in a tablelist written in python (not tcl directly). I have prepared an example that could demonstrate the problem, but before that lets see the required steps to run it: Copy the tablelist wrapper from here and save it as 'tablelist.py', then put it at the example code directory. Download "tklib-0.5" from here and copy "tablelist" directory from "modules" directory to the directory of example code. Here it is the code: from tkinter import *

问题 If I have a combobox1 has the items: Fruits & vegetables. I need to show a nother combobox2 based on the selected item in combobox1 . If the selected item in combobox1 is Fruits , then combobox2 items are: apple, orange ..etc. If the selected item in combobox1 is vegetables , then combobox2 items are: radish, lettuce..etc. How can I do that using PHP & HTML? ( Please consider "PHP & HTML only" as a condition ). 回答1: Unfortunately your conditions (PHP & HTML only, not javascript) means you

问题 Public Sub FiltercmbSubCategory() Dim sqlconn As New SqlClient.SqlConnection sqlconn.ConnectionString = "server = SKPI-APPS1;" & _ "Database = EOEMS;integrated security=true" Dim sqlcommand As SqlCommand sqlconn.Open() Dim da As New SqlDataAdapter("SELECT * FROM tblOfficeEquipmentSubCategory WHERE SUBCAT_ID = '" & cmbCategory.Text & "'", sqlconn) Dim dt As New DataTable da.Fill(dt) cmbCategory.DataSource = dt cmbCategory.DisplayMember = "SUBCAT_Name" cmbCategory.ValueMember = "SUBCAT_ID"

问题 I need to derive a class from ComboBox and change its Items property. Here is my code: public class MyComboBox2 : ComboBox { private MyObjectCollection MyItems; public MyComboBox2() { MyItems = new MyObjectCollection(this); } //new public ComboBox.ObjectCollection Items new public MyObjectCollection Items { get { return MyItems; } } } public class MyObjectCollection : ComboBox.ObjectCollection { public MyObjectCollection(ComboBox Owner) : base(Owner) { } new public int Add(Object j) { base

问题 I have an ASPxComboBox from the DevExpress suite and am trying to get it filtered. If I click on the dropdown button of the combo box it will show the first few of the query as if the filter is empty. If I try to populate the filter, or scroll down to see more, it will just provide a perpetual "Loading" state. The stored procedure returns the correct results when ran with appropriate parameters. What could be the problem? EDIT: I have been following this tutorial on the DevExpress site: http: