combobox

问题 I have a web update form where every control is a property of the same table. It should work this way: Whenever I select a value from the main(the first) dropdownlist, a query should be run getting all of the fields(properties) and filling the other controls depending of the value I selected. Event Code: Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles DropDownList1.SelectedIndexChanged Dim objModel As New ModelDAO ' the data access class

问题 trying to fill a combobox using a generic routine in a Module in vb.net 2010. I am passing to the sub the variable formname.comboboxname and splitting it into 2, running a query and this is where I can't go further. I need to do this because I have quite a few forms and comboboxes to fill, thought a generic method in one module would be great. I may break down and do a dataset for each combobox but this certainly should work and would be my preferred choice. in the form code I call it with --

问题 Right, i'm trying to create a program that allows a user to build a Space Marine (Warhammer 40k) army and theres a paticular portion of the program that i'm struggling with. This portion allows the user to select a 'Unit Type' from a ComboBox, then another ComboBox underneath is populated with all of the units for the 'Unit Type' you selected in the first ComboBox. For example if you selected the Elites 'Unit Type' in the first ComboBox then the second ComboBox should be populated with all

问题 I am trying to wrap the text in the ComboBox but I cannot really manage it. I need the wrapped text in the editor part, not in the dropdown part of the comboBox . I see that the editor is a TextField , and its text cannot really be wrapped or? Is there any trick or solution to have a nicely wrapped text so if I have a really long text I can see it every time? So instead of displaying the ... I want the whole text to be displayed. Code part I don't know if I should add since it is really

问题 I need to show items in a combobox with a different background color. I also want to change what that color is depending on if the item is selected (or the mouse is on top of it), just the same way it works when a combobox is not owner-drawn. It is all working fine, except that when the mouse comes off one of the items that I changed the color for, the item keeps the same color as when the mouse was on top. In the example below, the item 'other' is initially correctly drawn with

问题 I am trying to populate a combo box with data but I cant get it work public void fillZone() { string sql = "select location from zone"; MySqlDataAdapter zonedapter = new MySqlDataAdapter(sql,conn); DataTable dt = new DataTable("zone"); zonedapter.Fill(dt); } I use fillZone() to get data from mysql and have it stored in a dataTable.I want to populate a combobox named zonecb with data from returned result above, as shown below this.zonecb.ItemsSource = "Location"; this.zonecb.DisplayMemberPath

问题 Is there any way to highlight comboboxitem programmatically? Property IsHighlighted has no setter((. Changing style is not enought. 回答1: If you goal is to select rather than highlight (the IsHighlighted property is used to indicate a selected item), you can just set the IsSelected property or the SelectedItem or SelectedValue of the parent ComboBox. 来源： https://stackoverflow.com/questions/13195759/programmatically-highlight-combobox-item

问题 I have a ComboBox in WindowsForms and I draw items manually. Each item is composed from picture and text, so item is 34 px height. I want to set DropDownStyle of ComboBox to DropDownList to enable user input. But when I select some of the item, it is deformed, because picture and text is visible. And I want to display only text if user select some item. protected override void OnDrawItem(DrawItemEventArgs e) { e.DrawBackground(); if (e.Index > -1) { Piece item = this.Items[e.Index] as Piece;

问题 I'm new in javascript and need I to reload the current page after user clicks on the options of combobox, but I have some rules. The two comboboxes: <select onChange="Refresh(this.value)" name="comboA"> <option value="0">0</option> <option value="1">1</option> </select> <select onChange="Refresh2(this.value)" name="comboB"> <option value="2">2</option> <option value="3">3</option> </select> Rules: user clicks on "0" in the first combobox, reload to comboA=0. user clicks on "1" in the first

问题 I am inserting a record in Database and everything is working fine except updating the DataSource for ComboBox . Here my code for refreshing the combobox: nStateTableAdapter1.Adapter.Update(stateCodeDataSet, "NState"); cmbStateCode.DataSource = nStateBindingSource1.DataSource; cmbStateCode.DisplayMember = "NState.CountryCode"; cmbStateCode.ValueMember = "NState.CountryCode"; cmbStateCode.Refresh(); Above code is not working for me. Can anyone help me how to update the Combobox with the new