listbox

问题 i have a label in a listbox,there are many datatemplates in the listbox,and each template has a label,i am unable to retrieve the content of label from code behind in .cs file,the data template is common but every label has different text inside it.,so how can i retrieve each label value from the templates.As also there is a delete button for the template,which deletes the template selected.so if user deletes the templates,there are less templates inside listbox,so how do i iterate through

问题 the string is looks like 11,33,44 i made a split into three strings into 3 textboxes, and then when i do ListBox1.Items.Remove(ListBox1.SelectedItem) it doesn't work. it says ss.Split(",") Object reference not set to an instance of an object. here is my code Private Sub ListBox1_SelectedIndexChanged(sender As System.Object, e As System.EventArgs) Handles ListBox1.SelectedIndexChanged Dim ss As String = ListBox1.SelectedItem Dim aryTextFile(2) As String aryTextFile = ss.Split(",") TextBox1

问题 I want to create a checkbox list for every listbox item. So, I have a listbox created with 4 different items, "one", "two", "three", "four". I want to have a list of corresponding checkbox items for each of the listbox entries. When I click on a listbox entry, it should have a list of checkboxes on the right and when I click on a different listbox entry it should have a list of checkboxes that would be independent of the other listbox items. All checkbox lists are independent of each other,

问题 I want to bind my Store class which has multiple Products to Html.Listbox. While in edit Store mode, I want Html.Listbox show all products where products of the Store are selected. I could not manage to bind store.Products to the listbox My class structure; public class Store { public virtual int Id { get; set; } public virtual string Name { get; set; } public virtual IList<Product> Products { get; set; } } public class Product { public virtual int Id { get; set; } public virtual string Name

问题 I have a set of linked subs which work like this: A user types into an ActiveX TextBox A Change Event in that TextBox calls a sub in a Module That Module sub drives updating a named range in a sheet The range value drives updating a table of Excel cells that uses lookup functions based on the range value The table values are copied and pasted to a another range (to eliminate links to formulas) That pasted range is put into a ListBox using this (props to Rory for his patience): ActiveSheet

问题 I have a set of linked subs which work like this: A user types into an ActiveX TextBox A Change Event in that TextBox calls a sub in a Module That Module sub drives updating a named range in a sheet The range value drives updating a table of Excel cells that uses lookup functions based on the range value The table values are copied and pasted to a another range (to eliminate links to formulas) That pasted range is put into a ListBox using this (props to Rory for his patience): ActiveSheet

问题 In my WPF application I've a ListBox binding to a collection of view models. Those view models support validation by implement INotifyDataErrorInfo. I’m trying to display an error template for items with validation errors in my ListBox. I’m able to get the ListBox to display the default error template by setting NotifyOnValidationError=True on the ItemSource binding of the ListBox. Which looks like this: Code of my ListBox: <ListBox x:Name="ListBoxEvents" ItemsSource="{Binding Events,

问题 In my WPF application I've a ListBox binding to a collection of view models. Those view models support validation by implement INotifyDataErrorInfo. I’m trying to display an error template for items with validation errors in my ListBox. I’m able to get the ListBox to display the default error template by setting NotifyOnValidationError=True on the ItemSource binding of the ListBox. Which looks like this: Code of my ListBox: <ListBox x:Name="ListBoxEvents" ItemsSource="{Binding Events,

问题 I have a ListBox which is made up of Grid Items in Multiple SelectionMode in Silverlight 3.0. When I use ListBox.SelectedIndex it only returns the first item which is selected. I would like to be able see all of the selected items such that it would return all of the selected item indexes' such as; 2, 5, and 7, etc. Any help? Cheers, Turtlepower. 回答1: You can find the selected indexes by iterating through SelectedItems and finding the objects in the Items property, like this: List<int>

问题 I'm able to set an image to Listbox using the background property. But how do I set a desirable image as a background to items of the listbox? Thanks. 回答1: You'll have to redefine the ItemTemplate property of the ListBox. If you're not confident with XAML, you should try using Expression Blend. Here is an example of how you're XAML could look like. I created a new application using the Pivot Template application. <ListBox x:Name="FirstListBox" Margin="0,0,-12,0" ItemsSource="{Binding Items}">