combobox

问题 I want to create a ComboBox that automaitcally drops down the words containing the letter based on the input. My dropdownstyle is dropdown so the combobox has an input field. For example i would input the letter A or a I want the ComboBox to automatically dropdown the words which contains the letter A or a. The contents of the ComboBox are being set by myself manually. Is this possible? Thanks in advance. 回答1: You have to set these AutoCompleteMode: SuggestAppend AutoCompleteSource: ListItems

问题 I would like to get distinct values in my databound combo box as an example the values it has are: blue, blue, yellow, red, orange I would like it to just display blue once. My main thought was to get all combo box values into an array, set the array as distinct and then re-populate the combo box. Is there any other way? If not how would I actually get all the values from the combo box? Thanks EDIT -- Class: public class DistinctConverter : IValueConverter { } EDIT -- Debug: 回答1: You could

问题 I want a user to select a value from a ComboBox. Entries have to be suggested at user's text input. Do I have to use events to enforce a System.Windows.Forms.ComboBox to contain a value from its own DataSource ? Example: Entries have to be suggested to the user... If I write "CO", the combo should suggest "CONGO" and "COLOMBIA", but only one of those values should be entered by the user. The user should not introduce "COfdfgdfg" or any random string. Thanks! 回答1: You have to use combobox

问题 I am having issues with the Winforms combo box losing the value found during an autocompletion when the user tabs to the next control. Here is a code sample (as an Nunit Test that will pop up a form): [Test] [STAThread] public void Testing_AsDropDownList() { var comboBox = new ComboBox(); comboBox.DropDownStyle = ComboBoxStyle.DropDownList; comboBox.AutoCompleteSource = System.Windows.Forms.AutoCompleteSource.ListItems; comboBox.AutoCompleteMode = System.Windows.Forms.AutoCompleteMode

问题 Ordinary Windows ComboBox ( csDropDown or csDropDownList style) will open its dropdown list right below or, if no space left below, above the combo. Can I control the position of this list (at least by Y coordinate)? 回答1: Posting a code example that will show drop-down list animation correctly and will force showing the drop-down list above ComboBox1 . this code subclasses ComboBox hwndList : TForm1 = class(TForm) ComboBox1: TComboBox; procedure FormCreate(Sender: TObject); procedure

问题 I have a thousands of cells in an Excel worksheet which are ComboBoxes. The user will select one at random and populate it. How do I get the selected ComboBox value? Is there a way to trigger a function (i.e. an event handler) when the ComboxBoxes has been selected? 回答1: If you're dealing with Data Validation lists, you can use the Worksheet_Change event. Right click on the sheet with the data validation and choose View Code. Then type in this: Private Sub Worksheet_Change(ByVal Target As

问题 I have two excel spreadsheets, one has a combobox, the other one has a list of department names. I need to populate the combobox with the department names. How do I acheive this. 回答1: Here is a VBA Code: Dim vArr as Variant Dim i as Integer vArr = WorksheetFunction.Transpose(Sheets(2).Range("A2:A10").value) With Sheets(1).OLEObjects("ComboBox1").Object .Clear For i = Lbound(vArr) to Ubound(vArr) .AddItem vArr(i) Next i End With Here is the most simpler way to load the combobox, given your

问题 I am trying to create a DataGridView that holds configuration information. The available values can change for each row within a column based on the values in a different column so I can't attach a single datasource to the comboBox column. As an example: If you select car, the availalbe colors should be limited to colors available for that model. Car ColorsAvailable Camry {white,black} CRV {white,black} Pilot {silver,sage} The reason for considering the dataGridView is so that the operator

问题 I create a combobox in a class and want to set the selected value for that combobox. But when I do that, the selectedValue stays null and when I try to set the selectedIndex I get a ArgumentOutOfRangeException. Code: public Control GenerateList(Question question) { // Clear the local givenAnswer collection _givenAnswer.Clear(); // Get a list with answer possibilities List<QuestionAnswer> answers = question.GetAnswerSort(); // Get a collection of given answers Collection<QuestionnaireAnswer>

问题 I have created a table view in java Fx, one of the columns in table view consists of ComboBoxTableCell.Please find below the code for table view public class TabViewController { @FXML private TabPane cnfmTab; @FXML private TableView<TabVO> partsTable; @FXML private TableColumn<TabVO, String> column1; @FXML private TableColumn<TabVO, String> column2; @FXML private TableColumn<TabVO, String> column3; private ObservableList<TabVO> tableData = FXCollections.observableArrayList(); private