combobox

问题 I am using the ( EditingControlShowing ) event to Enable AutoComplete in DataGridViewComboBox Column. private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e) { if (e.Control is DataGridViewComboBoxEditingControl) { ComboBox combo = (ComboBox)e.Control; ((ComboBox)e.Control).DropDownStyle = ComboBoxStyle.DropDown; ((ComboBox)e.Control).AutoCompleteSource = AutoCompleteSource.ListItems; ((ComboBox)e.Control).AutoCompleteMode = System.Windows

问题 I want to create control which will allow user to select multiple selections from dropdown using check box.I have searched on Google and I got some links like http://code.msdn.microsoft.com/windowsapps/Multi-Select-ComboBox-in-cfbf1e22/view/SourceCode#content. I found this article useful but I can not use this control in every application because ItemsSource type may change in every application. I want to create generic control which will be used by any application which may have different

问题 I am making C# / WinForms application. The problem I couldn't solve (yet) is that when I change the SelectedItem of ComboBox programatically, it is changed until the ComboBox loses the focus, after that it "reminds" its value before assigning the SelectedItem. I think that it takes the old value from binding source. When choosing an item using UI the underlying bound object is updated normally but it doesn't so when I'm assigning new value to SelectedItem programatically. Just for additional

问题 It's possible to use the ObjectDataProvider in a WPF application to bind an enum's string values to a ComboBox's ItemsSource, as evidenced in this question. However, when using a similar snippet in a UWP application, the ff. error message is displayed: "ObjectDataProvider is not supported in a Windows Universal project." Is there a simple alternative to do this in UWP? 回答1: Below is a working example from one of my prototypes. ENUM public enum GetDetails { test1, test2, test3, test4, test5 }

问题 how can i catch the selected value of a fxml combobox and implement it into a javafx class? i gave the combobox the fx:id "sample" and created a button with onAction="#test" and tried .getValue and .getPromptText. @FXML private ComboBox<String> Sample; @FXML protected void test( ActionEvent event ) { String output = (String) Sample.getValue(); System.out.println(output); String output = (String) Sample.getPromptText(); System.out.println(output); } If i try to run it i get an error: java.lang

问题 How can I get the number of items listed in a combobox? 回答1: Try var count = comboBox.Items.Count; 回答2: You should reference Count of the Items property. myComboBox.Items.Count 回答3: comboBox.Items.Count; Doesn't work for me. I use : comboBox->count(); 来源： https://stackoverflow.com/questions/768513/how-to-get-the-number-of-items-in-a-combobox

问题 How can I get the number of items listed in a combobox? 回答1: Try var count = comboBox.Items.Count; 回答2: You should reference Count of the Items property. myComboBox.Items.Count 回答3: comboBox.Items.Count; Doesn't work for me. I use : comboBox->count(); 来源： https://stackoverflow.com/questions/768513/how-to-get-the-number-of-items-in-a-combobox

问题 I have a datagrid which has two combo box columns in it. The first combo box is a list of PersonnelTypes. Depending on which PersonnelType is selected, the second combo box should fill up with a list of Resources that match the selected PersonnelType The problem is, lets say I have two rows of data, if I change the PersonnelType of one row, the datagrid will set the itemsource for all of the Resources in every row. I only want it to filter the row that I am in, not all the rows. Here's the

问题 Goodday, I want my combobox to select the first item in it. I am using C# and WPF. I read the data from a DataSet. To fill the combobox: DataTable sitesTable = clGast.SelectAll().Tables[0]; cbGastid.ItemsSource = sitesTable.DefaultView; Combo box XAML code: <ComboBox Name="cbGastid" ItemsSource="{Binding}" DisplayMemberPath="Description" SelectedItem="{Binding Path=id}" IsSynchronizedWithCurrentItem="True" /> If I try: cbGastid.SelectedIndex = 0; It doesn't work. 回答1: Update your XAML with

问题 I need to show a default text in my ComboBox , this text must not changed also when the user select an item of the Combobox , actually for do this I've created this structure: <ComboBox ItemsSource="{Binding AvailableNations}" Width="160" Height="55" Margin="0, 0, 0, 15" Text="Select Countries" IsEditable="True"> <ComboBox.ItemTemplate> <DataTemplate> <CheckBox IsChecked="{Binding IsChecked}" Content="{Binding Item.Name}" /> </DataTemplate> </ComboBox.ItemTemplate> </ComboBox> this display as