ComboBox MVC Core 3

ComboBox MVC Core 3

Posted by: sebastian73 on 16 January 2020, 7:25 am EST

• 

  sebastian73

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  Posted 16 January 2020, 7:25 am EST

  Hi!

  I’m building a form for creating a new Item, and I can’t find the way to initialise a with no item selected, it always start with the first item in the collection selected.
  
  Is it possible to make it to start with no item selected? so I can validate the no input condition…

  Thanks!

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  ashwin.saxena

  

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  Posted 16 January 2020, 5:59 pm EST

  Hi Sebastian,

  You will need to get the reference of the ComboBox on the client-side and set its selectedIndex to -1. Please refer to the code snippet below and the sample attached:

  <script>
      c1.documentReady(function () {
          var cb = wijmo.Control.getControl('#colorBox');
          if (cb) {
              cb.selectedIndex = -1;
          }
      })
  </script>
  
  <c1-combo-box display-member-path="Name" selected-value-path="Value" is-required="false" id="colorBox">
      <c1-items-source source-collection="Model"></c1-items-source>
  </c1-combo-box>
  
  

  Regards,
  
  Ashwin

  ComboBox_Selection.zip