Silverlight combobox number of items shown refresh -


I have two combo boxes on an SL page when combo 1 update, a service called Combo2 and generates .

On the first call, 3 results are returned when the combo box is expanded, then you can see all 3 options.

On the second call, 4 results are returned. When the combo box is expanded, you can see 3 options with a vertical scroll bar.

If I reload and repeat those steps in reverse, then I will get 4 rows in the first line and 3 rows + one empty line on the second call (no, not a blank record. Can be done.)

It appears that the size of the drop down list keeps the first generated height.

How I combo

Edit # 1

The code adheres to the MV-VM pattern. When the page loads, Group 1 populates the first combo box, and nothing is selected. When the user makes a selection, then the selection is limited to group 1 section. 

  & lt; Combo box itemsource = "{binding path = group 1}" selected isam = "{bound path = group 1 selection}" /> & Lt; Combo box item source = "{binding path = group 2}" selected item {"{binding path = group 2 selection}" />   
 In view modal,  group 1 selections  in the property's accelerator, I have something like this 
 
  set {if (group1Selection ! = Value) {group1 selection = value; PopulateGroup2 (); OnPropertyChanged ("Group1Selection"); }}  
 
 Where populat Group 2 async my service call, receives the data, and places that data into the highlighted property of  Group2 . 
 
 In the "normal" circumstances, this is not a problem, since most options have dozens of possible choices, however, some  group 1  options only have 3 or 4 hair options if If one of them has been selected first, then the height of the combo box is set to 3 or 4, respectively, for the rest of the application, rather than maximizing the items shown 8. 
 
 MV -VVM, code-there is no code in the back.

This is a known bug in a combo box in Silverlight 2. I think it has been fixed in SL3.

You can fix this by doing the following:

  1. Get from the combo box

  2. Public class Mycombo box: Concobox

  3. Go about the "popup" section of the Concobox inside the onplatform () method 

      popup thePopup = GetTemplateChild ("Popup") as a popup; FrameworkElement as ThePopupContent = thePopup.Child FrameworkElement;

  4. Override the OnItemsChanged method

  5. Reset the override on-items within the chained system. ; Width dependency properties on popup using the ClearValue (DP) method. 

      thePopupContent.ClearValue (framework element.print); ThePopupContent.ClearValue (FrameworkElement.HeightProperty);

You can set maximum and minimum height & amp; Width properties if you are also concerned about those people too.


Comments

Post a Comment

Popular posts from this blog

python - Overriding the save method in Django ModelForm -

I'm having trouble overriding a ModelForm save method. I get this error I'm: Exception type: TypeErier Exception Value: Save () found an unexpected keyword argument 'committed' My intentions include a form 3 fields Submit several values ​​for, then create an object for each combination of those areas, and to save each object file models.py class collarsult type (models.Model): id = model. AutoField (db_column = 'icontact_result_code_type_id', primary_key = true) callResult = models.ForeignKey ( 'CallResult', db_column = 'icontact_result_code_id') campaign = models.ForeignKey ( 'campaign', db_column = 'icampaign_id') CALLTYPE = models.ForeignKey ( 'CALLTYPE', db_column = 'icall_type_id') agent = models.BooleanField (db_column = 'bagent', default = true) teamLeader = models.BooleanField (db_column = 'bTeamLeader', default = true) active = models.BooleanField (db_column = Django.form...
Read more

html - CSS autoheight, but fit content to height of div -

I have a div in which there are three children- div in the left and middle div: float: left while true: float: true because it is my layout Actually will spoil, I've used ClearFix Hack: .cf {zoom: 1; }. Cf: First,. Cf: {content: ""; Display: Table; }. Cf: After {clear: both; } It still works, but I want to be the right div an indicator. So it should fill 100% of the parent unit of height. How can I complete this? PS is the full code: & Lt; / Div & gt; & Lt; Div class = "mobile_content" & gt; & Lt; H5 & gt; {{Data.titel}} & lt; / H5> & Lt; Table & gt; & Lt; TR & gt; & Lt; Th & gt; Komponist: & lt; / Th & gt; & Lt; TD & gt; {{Data.komponist}} & lt; / TD & gt; & Lt; / TR & gt; & Lt; TR & gt; & Lt; Th & gt; Instrument: & lt; / Th & gt; & Lt; TD & gt; {{Data.instrumente}} & lt; / TD & gt; & Lt; / TR & gt;...
Read more

qt - How to prevent QAudioInput from automatically boosting the master volume to 100%? -

I have been trying to use Qt5 multimedia to record audio with QAudioInput, however, when I see If QAudioInput is started, it increases the master volume of my sound device to 100%. How can I prevent QAudioInput from changing the master volume? My current development platform is Linux with PalsAdio (with flat audio disabled). How can I use QAudioInput : QAudioDeviceInfo device_info = QAudioDeviceInfo :: defaultInputDevice (); QAudio format format; Format.setSampleRate (44100); Format.setChannelCount (1); Format.setSampleSize (16); Format.setCodec ("Audio / PCM"); Format.setSampleType (QAudioFormat :: SignedInt); Format.setByteOrder (QAudioFormat :: LittleEndian); Std :: cout & lt; & Lt; Device_info.deviceName (). ToUtf8 (). ConstData () & lt; & Lt; Std :: endl; QAudioInput * default_device = new QAudioInput (device_info, format); QIODevice * default_io_device = default_device-> Start (); a QAudioInput.setVolume () method is not you I ...
Read more