combobox

问题 I have a project in which i need to pop up an alert to the user before a combobox value is changed. This feature is to allow the user to stay in current state if modifications were not saved. Meaning that the user will be able to cancel the change. I have sub classed ComboBox and tried to hook on ITEM_CLICK of ComboBox.dropdown but this event is triggered after the value is changed. Also, I've tried MOUSE_CLICK ans MOUSE_DOWN but without success. In my code, I have added a "preChange" event

问题 I have no experience with jquery and ajax, so far I just looking for source and edit paste the code into my coding. Now I try to look for tutorial autosave combobox selection but i fail to find it.Can someone help me? I only done with MYSQL display record, but I do not know how to auto update combobox selection nito MYSQL using jquery. Example, I want to select booking status, when i choose approve from combobox, it will automatically save into MYSQL without click button submit. <?php include

问题 How can I setup a Combobox Style to make it look like this when mouse is hovering over it? Currently, it looks like this: I tried this: <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Background" Value="White" /> </Trigger> </Style.Triggers> But it did not work. Update, this is what I have when I right-click on the combobox: 回答1: Blend gave me these colors: <SolidColorBrush x:Key="ComboBox.MouseOver.Glyph" Color="#FF000000"/> <LinearGradientBrush x:Key=

问题 I have two ComboBoxes: fruits and drinks . fruits has the Strings: "apple", "orange", "banana" drinks has the Strings: "water", "coffee", "juice" How can I make a new ComboBox that has the values the user selects for the fruits ComboBox and the drinks ComboBox? ex: if the user selects apple and water , the new ComboBox should include apple and water as options. 回答1: Use a listener to the value properties of the first 2 ComboBox es and update the items of the third from it: @Override public

问题 I am c# silverlight5 beginner and i have a situation that i have to created a combo box dynamically using c# and kept items in it. But the problem now when i run it run properly showing the last value by default but when i select the another value it don't update the that value in the text box near by because it is not working dynamically. I guess i need to add some selection changed or some other event using c#. But i dont know how to do that. Please note that i have created this combo box

问题 How do I check to see if any of my 8 comboboxes match one another all at once (excluding null values of course, because they are all null when the form loads)? At the moment I have only figured out how to do it for the current and next one. In the case where there is a match, I want to clear the values of all the other comboboxes apart from the one in focus i.e. currentDropDown . Code below: Private Sub Form_Load() cboOption2.Enabled = False cboOption3.Enabled = False cboOption4.Enabled =

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . I just started using pyqt4 and am stuck on how to change a combobox list from another combobox. Is there a example of sometype that shows how to work this method. Do I use a if, else statement to change the

问题 I have a vba script that gets info from all sheets, adds them to different comboboxes and whenever a value is selected from a combobox different things happens. The first combo I populate as following: Private Sub Workbook_Open() Dim oSheet As Excel.Worksheet Dim oCmbBox As MSForms.ComboBox Set oCmbBox = ActiveWorkbook.Sheets(1).cmbSheet oCmbBox.Clear For Each oSheet In ActiveWorkbook.Sheets If oSheet.Index > 1 Then oCmbBox.AddItem oSheet.Name End If Next oSheet End Sub The second combobox is

问题 I have an array of combo boxes that are dynamically added to a windows form in VB.Net using Visual Studio 2010. I would like to access the cboBox.list and cboBox.selecteditem properties, and I absolutely can if I use dim cboList() as ComboBox = {} ReDim Preserve cboList(cboList.Count) Dim location As New System.Drawing.Point(FieldX, FieldY) cboList(cboList.Count - 1) = New ComboBox With cboList(cboList.Count - 1) .Name = "cboName" .Location = location .Size = Size .TabIndex = 1 End With And

问题 I have a two-column ListView with CheckBoxes in the first column and ComboBoxes in the second column. I need to loop through the ComoboBoxes in the second column and retrieve the selected values (or indexes) from each ComboBox, along with some index or identifier of the ComboBox, and put the values in an array. For example, the layout looks like this: COLUMN 1 COLUMN 2 ======== ======== ChBx 1 Combo1 ChBx 2 Combo2 I need to grab the SelectedValue or SelectedIndex of each ComboBox in the