combobox

问题 I have a problem with combobox initial value. I'm using form.loadRecord() and form.updateRecord() to load form values and insert them to grid. It works ok except for the combo values. I load store for combo on demand when it is clicked, so after the initial loadRecord() I get an int value with id. I have both smthid and smthname columns on grid. I tried to change the value beforerender but as suspected it gets propagated to grid. I need to somehow change the initial value of the combo without

问题 I have Ext.Net MVC form that post values to DirectAction. On server side, In DirectAction CoboBox selected value is always null. public ActionResult Save() { var cmbSender = this.GetCmp<ComboBox>("cmbSender"); var senderID = cmbSender.SelectedItem.Value; } I have checked Request["cmbSender"] but it does not work <form id="form12"> @( X.TabPanel() .Items( X.FormPanel() .Title("New Job") .ID("pnlNewJob") .Layout(LayoutType.Form) .MarginSpec("5 5 5 5") .Items( X.Panel() .Border(false)

问题 I want to customize the look of the ComboBox pop-up list in LWUIT. Nonetheless when I tried to change the ComboBox , ComboBoxFocus , ComboBoxItem , ComboBoxList , ComboBoxPopup components in LWUIT Theme Creator, nothing happened. The popup preview in Theme Creator still shows the pop-up in black text on white background. Am I missing something? How to change the theme of this pop-up? I am using LWUIT 1.4 回答1: Use the following styles in LWUIT resource edit, Unselected#ComboBoxItem#Color for

问题 I am creating a program which someone can input a search into a textbox and then narrow down the results using a series of comboboxes (or just use the comboboxes to search through everything). The program looks like this: form 1 I have made the options in the 2nd combobox change using the following code: Private Sub ComboBox1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ComboBox1.SelectedIndexChanged Dim type As String = ComboBox1.SelectedItem Dim make As String = ComboBox2

问题 Hello I am having an error and I can't figure it out. I am trying to select an object in my combobox and display the objects name into a label. This is my class: class Film { public string Naam { get; set; } public Film(string naam) { Naam = naam; } public override string ToString() { return $"{Naam}"; } } And this is the code of my form public partial class Form1 : Form { List<Film> filmlijst; public Form1() { InitializeComponent(); filmlijst = new List<Film>(); } private void button1_Click

问题 I have an access form, i want to know how to add item in combo box if there is not in there. my combo box is in value mode. 回答1: Unfortunately you cannot change the rowsource permanently without changing the form to design mode and adding the new value. It is possible to do this with code, but it is not a good idea when people are working. The easiest thing is to create a small table and add the values to that. New values will then be saved when you close the form. Allen Browne has a

问题 In a project I am working on, I have a ComboBox with dates that calculates the persons age depending on certain other criteria elsewhere in the application. If the user selects a date, we pop up a notification to the user that we changed a few things on the form due to this. As you can see in the picture, the combobox's items end up still staying on top of the messagebox when it pops up. The user can still click OK, and can move the box, but this is an odd way to present information to the

问题 I need to Align Text for ComboBox by left, right or center. I couldn't find TextAlignment or HorizontalAlignment property for ComboBox in WinForms. How can i set TextAlignment for ComboBox? public partial class Form1 : Form { ComboBox comboBox; public Form1() { InitializeComponent(); var button = new Button() { Text = "Increase", Size = new Size(100, 20), Location = new Point(10, 10) }; button.Click += button_Click; this.Controls.Add(button); comboBox = new ComboBox() { Location = new Point

问题 I have a Access 2010 Database using a multivalued field (the Access inbuilt way to have m:n-relation between two tables). To keep track of changes to the database I use an AuditTrail VBA procedure every time the corresponding form is updated, saving all the changes to history table. Now, when I change the value of the ComboBox and the loop reaches the ComboBox bound to the multivalued field, the procedure throws an error because of incompatible Data types: For Each ctl In Screen.ActiveForm

问题 My page loads super slow right now. Basically, i want to pre-populate the combo boxes that i have. Right now, it pre-populates each one individually and then selects the default value. This is so slow. The user will have to wait about a minute before the page is fully loaded. I'm grabbing the values to populate the combo boxes from a server. The values to pre-select the combo box value are received in an array through the response variable. How do i speed this whole process up? Code is below: