selectedindex

问题 I have a TabControl with two items. <TabControl x:Name="tab" SelectionChanged="TabControl_SelectionChanged"> <TabItem Header="TabItem1"> <Grid /> </TabItem> <TabItem Header="TabItem2"> <Grid /> </TabItem> </TabControl> private void TabControl_SelectionChanged(object sender, SelectionChangedEventArgs e) { Debug.WriteLine("Selected Index: " + tab.SelectedIndex); if (tab.SelectedIndex == 1) { tab.SelectedIndex = 0; } } when click 2nd item, 1st item have focus and print below. Selected Index: 1

问题 I have a TabControl with two items. <TabControl x:Name="tab" SelectionChanged="TabControl_SelectionChanged"> <TabItem Header="TabItem1"> <Grid /> </TabItem> <TabItem Header="TabItem2"> <Grid /> </TabItem> </TabControl> private void TabControl_SelectionChanged(object sender, SelectionChangedEventArgs e) { Debug.WriteLine("Selected Index: " + tab.SelectedIndex); if (tab.SelectedIndex == 1) { tab.SelectedIndex = 0; } } when click 2nd item, 1st item have focus and print below. Selected Index: 1

问题 I have a URL structure with query string and parameter called position . example: http://computerhelpwanted.com/jobs/?occupation=administrator&position=network+administrator I also have a form select option drop down list with the form select name of position . example: <form action="/jobs/" method="GET" id="menuform"> <select name="occupation" onChange="populate(this.id,\'position\')"> <option selected="" disabled="">Select Occupation</option> <option value="administrator">Administrator<

问题 I've hit a weird problem with UITabBarController on iOS7 and can't seem to find a workaround, so any help would be welcome! Scenario: Navigation-based app using landscape orientation on iPad. App consists of a main view, and a second view which is a UITabBarController. TabBarController has two tabs. First view has two buttons - each button performs a segue to the tab bar controller and sets a different tab as selected. (i.e. button1 selects the first tab, and button2 selects the second tab).

问题 I have a Listbox with its DataContext. When I select an item, I can't select the same again. This is not a problem when there are many objects, but sometimes, a post-service return me a list with only one element, and if the user select the element and he wants select it again, he will not can do it. Anyone knows how to resolve this problem Anyway, thanks! 回答1: Try this, it works for me.. :) public void OnSelectionChanged(object sender, SelectionChangedEventArgs e) { ListBox listBox = sender

问题 I have a method that removes currently selected item in a ListView listView1.Items.Remove(listView1.SelectedItems[0]); How do I select the next in the ListView after removing the selected one? I tried something like var index = listView1.SelectedItems[0].Index; listView1.Items.Remove(listView1.SelectedItems[0]); listView1.SelectedItems[0].Index = index; But I get the error Property or indexer 'System.Windows.Forms.ListViewItem.Index' cannot be assigned to -- it is read only Thank you. 回答1:

问题 The problem is as follows: I connected the ListBox with a list of elements of some custom class ( List<Person> persons = new List<Person>() ) using DataSource property. Of course ValueMember and DisplayMember are both assigned to appropriate properties of this class. When I first load data, everything looks ok. However, when I click on some item (i.e. 7th position, counting from 1) and then rebuild the list AND the number of elements is LESS than 7, as a result I can't see the proper texts on

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: retaining selected dropdown option on postback I have a dropdown when user selects the option, the value is passed on to the same url as querystring refreshing the page. after the page refreshes i wanna retain the selected value so user knows what was selected. How do i do this in jquery? <select id="hospitalDropDown" onchange="window.open(this.options[this.selectedIndex].value,'_top')"> <option value="http:/

问题 I have a lisview that I have created that loads information into the program from selected files. I am now trying to add in a search button to the information typed in so that it highlights (selects) the line of code that information is found in (Entire line for both columns) Multiselect is turned on. The part I am stuck with is if it was a normal listbox I would use selectedindex but with Listview this method does not seem to work and only has selectedIndexCollection or selected items. If I

问题 Im having a very funny issue in WPF Im creating a Combobox through code, and adding it to a control. When I set the Combobox.SelectedItem or Combobox.SelectedIndex or Combobox.SelectedValue I am unable to select another option from the Combox items. ForeignKeyDisplayAttribute attribute = (ForeignKeyDisplayAttribute)this.GetAttribute(typeof(ForeignKeyDisplayAttribute), property); if (attribute != null) { ForeignKeyDisplayAttribute fkd = attribute; Type subItemType = fkd.ForeignKeyObject;