combobox

问题 I am trying to have a generic widget composed of a label and a value. The value is set by a combobox. Here is the structure: Structure tParam Dim label As Label Dim comboBox As ComboBox Dim valueX As String End Structure Dim parameter1 As tParam I'd like to modify the valueX as the SelectedIndexChanged event is fired. For now I have set parameter1.label.text = "Id" parameter1.comboBox.Tag = parameter1 ' the struct itself AddHandler parameter1.comboBox.SelectedIndexChanged, AddressOf

问题 So I'm trying to create an 'abnormal' combobox using ExtJs 4 and I'm running into a slight issue which I can't figure out how to resolve. I got the basics down with the code that follows. As of right now I am able to get the dropdown to show all the addresses in a proper format and when I click on the proper address it properly shows the 'Street1' value in the input. Here is what I'm stuck on: I'm trying to add an initial item to the combobox that basically says something like 'Add New

问题 I have a WPF combobox that is bound to an enum like this: <Window.Resources> <local:EnumDescriptionConverter x:Key="enumDescriptionConverter"/> <ObjectDataProvider MethodName="GetValues" ObjectType="{x:Type sys:Enum}" x:Key="cityNamesDataProvider"> <ObjectDataProvider.MethodParameters> <x:Type TypeName="local:MyModel+CityNamesEnum"/> </ObjectDataProvider.MethodParameters> </ObjectDataProvider> </Window.Resources> <ComboBox x:Name="cityNameComboBox" ItemsSource="{Binding Source={StaticResource

问题 I have a WPF combobox that is bound to an enum like this: <Window.Resources> <local:EnumDescriptionConverter x:Key="enumDescriptionConverter"/> <ObjectDataProvider MethodName="GetValues" ObjectType="{x:Type sys:Enum}" x:Key="cityNamesDataProvider"> <ObjectDataProvider.MethodParameters> <x:Type TypeName="local:MyModel+CityNamesEnum"/> </ObjectDataProvider.MethodParameters> </ObjectDataProvider> </Window.Resources> <ComboBox x:Name="cityNameComboBox" ItemsSource="{Binding Source={StaticResource

问题 I have a Windows Forms application, and one of the forms has a couple of ComboBox es that are both bound to the same BindingList of objects I have mapped via Entity Framework. The Form_Load event calls this: private void SetFacilityDropdowns() { dbContext.Facilities.Load(); var bindingSource = dbContext.Facilities.Local.ToBindingList(); Dictionary<ComboBox, string> selectedDropDownsAndBoundFields = new Dictionary<ComboBox, string> { {FacilityId, DataConstants.Facility.FacilityId},

问题 I have a Windows Forms application, and one of the forms has a couple of ComboBox es that are both bound to the same BindingList of objects I have mapped via Entity Framework. The Form_Load event calls this: private void SetFacilityDropdowns() { dbContext.Facilities.Load(); var bindingSource = dbContext.Facilities.Local.ToBindingList(); Dictionary<ComboBox, string> selectedDropDownsAndBoundFields = new Dictionary<ComboBox, string> { {FacilityId, DataConstants.Facility.FacilityId},

问题 I try to use a ComboBox based on ToolBar.ComboBoxStyleKey. It has a flat design. Control by default does not have a border, i.e., on a white background is only visible icon of ToggleButton. How can I add border for control when focus isn't on ComboBox? Thanks! No focus: Mouse hover: 回答1: There is a Border control in WPF, you could use that to wrap around your ComboBox. <Border Background="GhostWhite" BorderBrush="Gainsboro" BorderThickness="1"> <ComboBox> ... </CombodBox> </Border> http://www

问题 I try to use a ComboBox based on ToolBar.ComboBoxStyleKey. It has a flat design. Control by default does not have a border, i.e., on a white background is only visible icon of ToggleButton. How can I add border for control when focus isn't on ComboBox? Thanks! No focus: Mouse hover: 回答1: There is a Border control in WPF, you could use that to wrap around your ComboBox. <Border Background="GhostWhite" BorderBrush="Gainsboro" BorderThickness="1"> <ComboBox> ... </CombodBox> </Border> http://www

问题 I am trying to right the information from a combobox into a text file so it can be saved. If the information in the combobox is John, Marry, Jack I would like it to appear in the text file like this: John Mary Jack The code I currently use give a result of JohnMaryJack in the text file For Each item As Object In cmbworld.Items Dim test As String test = item sb.AppendFormat("{0}", item) Dim FILE_NAME As String = "D:\Documents\test.txt" If System.IO.File.Exists(FILE_NAME) = True Then Dim

问题 i want to create a combobox with two fields inside. so far, this is my code. it can only display the area number but i want to display also the area name in a single line. can anyone help me with this? any help will be greatly appreciated. thank you so much Sub getarea() Try Call MyConnection() Sql = "select AREA_NO as 'Anum', AREA_NAME as 'Aname', AREA_LOCX as 'Alocx' from area" Dim cmd As New MySqlCommand(Sql, Con) Dim reader As MySqlDataReader reader = cmd.ExecuteReader Try Dim comboarea