selecteditem

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 I have been confused while setting SelectedItem programmaticaly in wpf applications with Net Framework 3.5 sp1 installed. I have carefully read about hundred posts \topics but still confused(( My xaml: <ComboBox name="cbTheme"> <ComboBoxItem>Sunrise theme</ComboBoxItem> <ComboBoxItem>Sunset theme</ComboBoxItem> </ComboBox> If I add IsSelected="True" property in one of the items - it's dosn't sets this item selected. WHY ? And i was try different in code and still can't set selected item:

问题 I have a Java Desktop Application with JavaFX 2 in it and in my FX I've got a TabPane. I want to set the default tab. In other words I want to set a tab as selected. I found that there are multiple ways to find out which tab is selected and I found setSelectionModel() but I can't figure out how to use it. TabPane tabPane = new TabPane(); Tab tab0 = new Tab("blue"); tab.setContent(new Rectangle(200,200, Color.BLUE)); Tab tab1 = new Tab("green"); tab.setContent(new Rectangle(200,200, Color

问题 The method below when I click second time gives the ArgumentOutOfRangeException error, and says index 0 is not a valid index. In first click it works!? ListView FullRowSelect set true. I see this happens while pressing ALT and CONTROL keys. If I click without pressing those keys it gives no error or If click an empty row before clicking 2nd time it does not give the error. Is there a way to use those keys combination and clicking more then once ? private void MultipleToText(object sender,

问题 The method below when I click second time gives the ArgumentOutOfRangeException error, and says index 0 is not a valid index. In first click it works!? ListView FullRowSelect set true. I see this happens while pressing ALT and CONTROL keys. If I click without pressing those keys it gives no error or If click an empty row before clicking 2nd time it does not give the error. Is there a way to use those keys combination and clicking more then once ? private void MultipleToText(object sender,

问题 I've seen a couple of posts asking a similar question but I have not been able to duplicate the answers in my code successfully. The following code adds items and their value member to a list box. Public Shared Sub ListFiles(hTab As Hashtable) Debug.Print("create file and key" & Now) Dim Enumerator As IDictionaryEnumerator Enumerator = hTab.GetEnumerator() Dim MyKeys As ICollection Dim Key As Object MyKeys = hTab.Keys() If (hTab.Count > 0) Then For Each Key In MyKeys Dim sfileName As String =

问题 I'm developing a small web application for storing data of a hospital's patients in order to learn more about zk and it's amazing features. My goal this time is when I select a row (checkmark) I want to take the data of the row (red color) to their corresponding textbox (blue) and this works when I choose any row of the table: Maybe it's a kind of configuration of the listbox or maybe I have to implement a method to get what I want, I don't know. It will be great if you give me a hand with

问题 I have met an issue of unproper selection of items in TListBox in my application with a HorzScrollBox in the form. The form has two (or more) TListBox on it. They are placed away from each other so that their absolute left coordinates difference is more than the width of the current device screen width. The error appears in the following sequence of user actions. An item is selected from the left TListBox The HorzScrollBox is scrolled to the right and the second TListBox becomes visible to

问题 I have met an issue of unproper selection of items in TListBox in my application with a HorzScrollBox in the form. The form has two (or more) TListBox on it. They are placed away from each other so that their absolute left coordinates difference is more than the width of the current device screen width. The error appears in the following sequence of user actions. An item is selected from the left TListBox The HorzScrollBox is scrolled to the right and the second TListBox becomes visible to

问题 My application contains a ComboBox that the user can delete items from. When the program starts up it populates the ComboBox from a list of strings read in from a configuration file. Here is the code to add items: // version list is an array of strings foreach (string version in versionList) { versionComboBox.Items.Add(version); } if (versionComboBox.Items.Count > 0) { versionComboBox.SelectedIndex = 0; } Here is a screenshot of the combo box after it's been populated: If the user clicks the