LabVIEW: How to dynamically create combobox items during run time - combobox

I would like to generate combobox items dynamically during run time. I have a combobox called Camera and say if I have 10 cameras connected then I want to name each camera as "Camera_0", "Camera_1", "Camera_2"..., and "Camera_9" and display them in the combo box.
I want to leverage a for loop to append a string to store each camera string name in an array so that I can display in the combobox.
Thanks

Build an array of strings first and then write to the "Strings[]" property of the combo box using a reference or a property node.
Edit: original snippet was wonky due to the property node. Just wire your combo box reference to the "Combo Box" node there and you're all set.

Related

wpf Treeview blank while using virtualization

We are maintaining a List data structure. After list is prepared, we are assigning datasource to Treeview. We are applying 'Virtualization' property to 'True'. Initial structure is like below. After virtualization, visual portion is 53 items.
-Doc
-Chap1
Page1
Page2
...
Page1000
Then we are trying to add one more item called "Chap2" with 500 sub items ("Pages") to "Doc" node at run time and then setting vertical scroll position to last sub item.
Problem: We are getting blank treeview after this operation.
Please suggest that do we need to change any properties or anything we need to do?

Silverlight autocomplete textbox control?

Is there a control in Silverlight which act like the TO text box in email composers
which when you start typing it gives you a list of contacts and when select one and start type again will give you the contact list to select another email address (multi email addresses selection)?
You want the AutoCompleteBox
You set up an ItemsSource to be the possible e-mail addresses and when the user starts typing it will search against this list and suggest matches. So in your scenario you'd need to read the address book to populate this list.
You don't have to bind to a list of strings, it allows you to bind to an object and display and match against the human readable representation of that object.

Bind objects of different types to combobox in WPF

Requirement:
1. Show a list of all referral types in a combo box. (eg. Newspaper, Yellow Pages, Client)
2. Upon choosing client, a popup is shown where they can search for clients within the system.
3. From the popup, the user can choose one client.
4. Popup will be dismissed and the client name will be populated into the combobox.
I'm almost done with the implementation, wherein requirements 1 thru 3 are done. However, I'm stuck with number 4. The reason is that, the combobox is bound to referraltype objects. However, the chosen item from the popup is of type "client". Right now, I'm just displaying the chosen client in a separate textblock. However, the customer wants it to be displayed as part of the combobox itself.
Not sure how it could be done.
Any help would be appreciated.
Thanks
Bala
You could have a BaseReferralTypeViewModel which NewspaperViewModel, YellowPagesViewModel and ClientViewModel all inherit from. In the combo box resources in xaml declare DataTemplates which describe how to display these types in the combo box. In the case of the first two types its probably just a text block.
In the case of the ClientViewModel create an instance but don't initialise it with any client data.
The DataTemplate can detect this and just display the referral type.
Once the ClientViewModel is initialised with client data by the popup the DataTemplate will detect this and display the name.

How to perform Parallel DataBinding in WPF

I have a collection class. Say CellCollection, which contains Cells which contains a collection called Cell.
If we do data binding it binds in linear manner. Like first cell11, cell12, cell13, cell14 then, cell21, cell22, etc.,
[Lets assume the collection size is static and proceed]
I have an ItemTemplate for ListBox, which consists of StackPanel which contains 3 textblocks. What I want is the first textblock to have first "Cells"'s first cell ie, Cell11, followed by the second textblock to have second "Cells"'s first cell Cell21 etc.,
Is it possible to bind the collections using indexes in such a way they will be processes in-parallel.
I dono't how to ask this question. I hope the image would help.
I've create dynamic xaml using xaml reader and assigned it as template for the list box. Everything is fine now :)

Can't make ListItems Visible

I have 3 ListViews in a WPF Grid Column, one each for customers, products, and vendors.
They each get data from LINQs to separate SS2005 queries in the same DB.
The lists are populated when a user enters text in a TextBox.
The LINQ query code uses as startswith() function that reads the user entry and returns a smaller list to the ListView.
When the code is run, each ListView is populated properly.
However, the Products list doesn't display the entries.
I attached a call to a MessageBox to the selection event of the ListItem and the message box correctly displays the product.
The single difference between the two working lists and the bad one is the query that calls the bad one returns a single field from the DB and the others return two fields, a text field and an integer ID field.
I'm at a loss.
The background of the ListView is white, the foreground is black (they were set using the properties panel).

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