combobox

问题 I have populated a ComboBox inside a ListView . Screen shot is given below As shown above it's displaying "M", "a", "c" instead of "Mac". Why it is separating the word into characters? In code behind file I've written ItemCategoryDAL itemCategoryDalObj = new ItemCategoryDAL(); DataTable dataTable = itemCategoryDalObj.GetAllItemCategory(); listView1.ItemsSource = dataTable.DefaultView; And in .xaml file I've written: <ListView Height="148" HorizontalAlignment="Left" Margin="23,12,0,0" Name=

问题 I need help with JQuery UI Autocomplete Combobox. I cannot get the "CHANGED" event to fire no matter what. I have pulled together this widget from various examples. I have a JSFiddle here for the current working example. I want it to "ALERT" me with the select ID that was changed (I have 4 of these widgets on one page on the site I am building). I get no JS errors from the example, so what am I doing wrong? Thanks in advance (function ($) { $.widget("custom.combobox", { _create: function () {

问题 I need help with JQuery UI Autocomplete Combobox. I cannot get the "CHANGED" event to fire no matter what. I have pulled together this widget from various examples. I have a JSFiddle here for the current working example. I want it to "ALERT" me with the select ID that was changed (I have 4 of these widgets on one page on the site I am building). I get no JS errors from the example, so what am I doing wrong? Thanks in advance (function ($) { $.widget("custom.combobox", { _create: function () {

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

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

问题 I'm using WPF Toolkit DataGrid and DataGridComboBoxColumn. Everything works well, except that when selection change happens on the combobox, the selectedvaluebinding source is not updated immediately. This happens only when the combobox loses focus. Has anyone run into this issue and any suggestions solutions ? Here's the xaml for the column: <toolkit:DataGridComboBoxColumn Header="Column" SelectedValueBinding="{Binding Path=Params.ColumnName, UpdateSourceTrigger=PropertyChanged}"

问题 I am trying to model the behavior of a ComboBox dropdown (or other drop downs for that matter, including context menus) where the drop down closes when you click anywhere else, even on something that can't be focused. I've tried subscribing for events such as MouseCaptureChanged, LostFocus, and Leave. I have a custom UserControl which is acting as a dropdown and I just want to close it up when the user clicks anywhere else. This seems like something that's done in many controls so I'd be

问题 I have a ComboBox that is bound to a DataSource. I want to dynamically add items to the ComboBox based on certain conditions. So what I've done is add the options to a new list, and then change the DataSource of the ComboBox like so: cbo.DataSource = null; cbo.DataSource = cbos; cbo.DisplayMember = "Title"; cbo.ValueMember = "Value"; Then, I check cbo.Items.Count , and it has not incremented - it does not equal the count of the DataSource. Any ideas what I can do here? Note this is WinForms

问题 I have a very messy long items full of strings in a combobox, and it would be lovely to just sort it from a to z to make it easier to track. Is it possible? 回答1: There are two possible ways that I could think of: A) Use the WinForms Combobox Sorted Property If you're using WinForms, you can use ComboBox.Sorted = true; B) Manually Sort your List with OrderBy If the data in your combo box comes from in a form of a list, use OrderBy to the List of data you are going to put in the ComboBox before

问题 I have 2 comboboxes like on the image and would like to know if it is possible to set some kind of text field for the combobox (so the first box would state Members). This way I would like to get rid of the textboxes above the comboboxes. I know this can be done by adding the "Members" to the dataset but I donøt want to do that. Is there another way? BR 回答1: The effect you are looking for is called a 'watermark', this can be achieved with a value converter as described in the following