combobox

问题 I’m trying to populate one Telerik AJAX radComboBox from the results of another i.e. comboBox1 – autocompletes and user selects an item comboBox2 – user selects. Loads on demand. Uses the selected value from comboBox1 to populate itself. The problem is that I can’t get the selected value of combobox1 Markup <telerik:RadComboBox ID="comboBox1" runat="server" EnableLoadOnDemand="True" MarkFirstMatch="False" onitemsrequested="comboBox1_ItemsRequested" > </telerik:RadComboBox> <telerik

问题 I am having issue with retaining selected item in a DataGridTemplate column ComboBox. I have the DataTemplate editable combobox column as the first column in the datagrid and next to it, I have a text column. The DataGrid is populated with data read from SQL stored procedure. Everything works fine, except when I select an item in the combobox and move to the text field and start typing in it, the Combo selection blanks out. It blanks out both for a new item or existing item. Oddly, this

问题 I'm trying to edit a combobox value. But what happens is when I click a grid cell the old value disappears I want to keep a the and also avoid the user to select the values form the combo box itself and not values other than those in the drop down How can i achieve these two things. { text: 'Food Items', xtype: 'gridcolumn', dataIndex: 'food_lister', flex: 1, renderer: function (value) { console.log() if (Ext.isNumber(value)) { var store = this.getEditor().getStore(); return store.findRecord(

问题 I have three tables. Employee, ClientEmp and Client. ClientEmp has the ForeignKey of both Employee (EmployeeID) and Client(ClientID). So far, I am able to save changes to ClientEmp in my database (using EF ) based on the selected Client. But I have to type in the EmployeeID ForeignKey manually in a textbox to be able to match the data for it to save. Obviously, this isn't very user friendly if a user has no idea what the EmployeeID FK is enter into the textbox either. Therefore, is there a

问题 is there a way that the user can input other values in bootstrap combobox? from this site: https://github.com/danielfarrell/bootstrap-combobox/ i tried to remove the code below from the javascript and the user can enter any value but when i try to save it in the database the combobox value is not saving. if (!this.selected && val !== '' ) { this.$element.val(''); this.$source.val('').trigger('change'); this.$target.val('').trigger('change'); } Thanks! 回答1: I'm using this workaround: bootstrap

问题 I am building a small application with JavaFX + FXML and I'm trying to implement some simple CSS to have a specific style. I have an issue with the Combobox element. Indeed by default its color is grey: And I would like to have it white (or transparent), and keep the borders, to match the same style as the Text Field. So I tried to set the background color to transparent but there is a side effect: The borders become transparent too! Here is the CSS i have added: .root { -fx-font-size: 11pt;

问题 I have a TDBLookupComboBox showing a TStringField of kind fkLookup , which allows Null values (from a nullable Integer database column). The dropdown list displays the items from the assigned LookupDataSet , which comes from a joined table. If the field is Null , none of the list items are displayed, the combobox is empty. If the field has a value, the correct description is shown. I can reset it to Null by pressing the assigned NullValueKey . That's all ok, but the users prefer using the

问题 I saw that I can access the templated parts of a ComboBox (the TextBox , PopUp and Button ) via the FindName method. The TextBox should be accessible by using cb.FindName("PART_EditableTextBox") , however, this always returns null for me. As per melya's suggestion, I have tried using cb.Template.FindName("PART_EditableTextBox", cb); instead -- this works on a simple test app, but not my own. The difference, perhaps, is that I'm trying to do this before the ComboBox is loaded or initialised (I

问题 I have a problem where scrolling in both a toolStripComboBox and regular ComboBox is really slow. This happens both using the arrowkeys and the mouse scrollwheel. However, if I use the scrollbar it behaves as expected. Here's the toolstrip combobox: // // toolStripComboBoxDeild // this.toolStripComboBoxDeild.AutoCompleteMode = System.Windows.Forms.AutoCompleteMode.SuggestAppend; this.toolStripComboBoxDeild.AutoCompleteSource = System.Windows.Forms.AutoCompleteSource.ListItems; this

问题 I've had an issue with the WPF ComboBox that I was eventually able to solve. The reason of the issue however is not clear. The issue occurred when using a ComboBox where the ItemsSource was referencing a different DataContext than the SelectedValue . When doing this and navigating away, the SelectedValue property was set to null . Since some properties contain logic when changing (when field A changes, also change field B), some logic was executed incorrectly. <ComboBox x:Name="Sector"