Databases
StackOverflow2013
Postsdbo
POSilverlight combobox number of items shown refresh
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POSilverlight combobox number of items shown refresh
    primarykey
    data
    text
    <p>I have two combo boxes on a SL page. When Combo 1 updates, a service is called and populates Combo 2. </p> <p>On the first call, 3 results are returned. When the combo box is expanded, you can see all 3 options.</p> <p>On the second call, 4 results are returned. When the combo box is expanded, you can see 3 options, with a vertical scroll bar.</p> <p>If I reload and do those steps in reverse, I get 4 rows the first call and 3 rows + a blank row on the second call. (No, the blank is not a record. It cannot be selected.)</p> <p>It appears that the drop down list size keeps the first generated height.</p> <p>How can I refresh the combo box max items shown after each service call?</p> <p>Thanks!</p> <p><strong>Edit #1</strong></p> <p>The code follows the M-V-VM pattern. When the page loads, the <code>Group1</code> populates the first combo box, and nothing is selected. When the user makes a selection, that selection is bound to Group1Selection.</p> <pre><code>&lt;ComboBox ItemsSource="{Binding Path=Group1}" SelectedItem="{Binding Path=Group1Selection}" /&gt; &lt;ComboBox ItemsSource="{Binding Path=Group2}" SelectedItem="{Binding Path=Group2Selection}" /&gt; </code></pre> <p>In the viewmodel, in the set accessor of the <code>Group1Selection</code> property, I have something like</p> <pre><code>set { if (group1Selection != value) { group1Selection = value; PopulateGroup2(); OnPropertyChanged("Group1Selection"); } } </code></pre> <p>Where PopulateGroup2 performs my service call async, gets the data, and puts that data into the exposed property of <code>Group2</code>.</p> <p>Under "normal" conditions, this isn't a problem, since most options have dozens of possible selections. However, a couple of the <code>Group1</code> choices only have 3 or 4 child choices. If one of those is selected first, then the height of the ComboBox, for the rest of that application instance is set to 3 or 4, respectively, instead of maxing out at 8 shown items.</p> <p>Following the M-V-VM pattern, there is no code in the code-behind.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USmarkti
    1. USJarrett Meyer
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POSilverlight combobox number of items shown refresh
      1. USDavid
      1. VTFavorite
    2. VO
      singulars
      1. POSilverlight combobox number of items shown refresh
      1. This table or related slice is empty.
      1. VTUpMod
    1. COAre you using data binding in your combo box 2 ItemsSource? What does the XAML look like?
      singulars
      1. POSilverlight combobox number of items shown refresh
      1. USMichael S. Scherotter
    2. COIf you are not using data binding, what does the code look like?
      singulars
      1. POSilverlight combobox number of items shown refresh
      1. USMichael S. Scherotter
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload