selecteditem

using primeNg dropdown component, I'm trying to initialized the dropdown with initial value with no success, I'm using reactive approach. I checked the primeNg documentation and demos - almost all the examples there are using template driven, I would like to have the same with model driven. I'm able to render the dropdown with the values in the list but the selected item is not the one I declared in the form, instead it's the first item in the list. my code: template <div [formGroup]="formGroup"> <p-dropdown [options]="results" formControlName="second" (onChange)="onChangeHandler($event)"

I have a Spinner that's populated using a cursor containing data from a database. It appears that it's impossible to set the selected item in the spinner using the value of the ID column of a row. And that the only way to set the selected item is by using the position of the row within the dataset. Is this correct? If so, is there a more efficient way of determining the row's position than by iterating through the dataset using the cursor? The inefficient (to my mind) way is outlined here . Thanks much! First step, create view for your data set, with joins etc.: CREATE VIEW my_view AS SELECT

Following scenario: <ComboBox ItemsSource="{Binding Path=Names}" SelectedItem="{Binding Path=Name, UpdateSourceTrigger=PropertyChanged}"> </ComboBox> Names is a string collection which might change through code in the ViewModel. For example Names could be set to either male names (John, Paul, George) or female names (Mary, Jane, Karen). Let's assume the male collection is active and the user selects "John" making it the SelectedItem. Now the collection changes to female names. By default the SelectedItem will be set to Null and John will not be displayed anymore. Instead an empty string will

OK, this must be a duplicate question, but I cannot find the answer: I have a listbox that is databound to a Collection. By default Items[0] is selected. How can I prevent this in order to ensure that the SelectionChanged event is raised any time I click a ListBoxItem? EDIT: I had already dismissed the SelectedIndex=-1 route, but I tried again: Setting the SelectedIndex to -1 in the Listbox's constructor (or as an attribute in XAML) does not work. It seems that the listbox is populated after the initialization and the selectedindex will become 0 after all.Same story for setting the

I have a GridView with a bunch of icons and I need to select one. And by select I mean: I need the drawable id to store into a database (so I can access it later) I need to draw some kind of visual cue on the grid to let the user know which icon is currently selected I found this: http://groups.google.com/group/android-developers/browse_thread/thread/f08a58167dbaa8c8 So I guess setSelection is out of the picture and I can't use it to select the icon itself nor draw the visual cue. I know the grid item position in the onItemClickListener and I can save it as a private class variable. My biggest

I have the following code in a custom user control that contains a DropDownList named ddlAggerationUnitId. The DropDownList is DataBind'd on the Page_Load() event. The "value" is set to be 40 and it DOES exist. If I remove the logic for the set method the page will load and select the correct item, but if the value is bogus the page throws an exception. I'd like to avoid that exception by seeing if the value exists BEFORE trying to set it, hence why the logic is necessary. Right now it looks like the compiler is evaluating the if statement as false, even though I know for a fact it should be