Viewing 3 posts - 1 through 3 (of 3 total)
  • Author
  • #102211

    I need to detect what items (check boxes) are clicked.  I have tried using the OnChange event but there doesn’t seem to be any means of determining what the change was.  Could you advise on the event to use and provide a code sample on how to extract the item that was checked or unchecked, or the current status of the list of checkboxes in the control?
    <MultiComboInput OnChange=@cboFormula_Change DataSource=@cboFormula SelectedIndexes=@cboFormula_SelectedItem DisplayMember=”label” ValueMember=”value”>
    private void cboFormula_Change(Event eventObj)


    Hi xyzzy,
    I have created a quick code snippet so that I can showcase you how to have the functionality that you need.

    div @ref="divRef" style="height:1000px">
     <MultiComboInput DropDownButtonPosition="DropDownButtonPosition.Right" OnChange="@ChangeEmit" DataSource="@summaries"></MultiComboInput>
    @code {
        private void ChangeEmit (Event EventObj)
            var detail = EventObj["detail"];

    Let me know if that works for you!
    Please, do not hesitate to contact us if you have any additional questions.
    Best regards,
    Yavor Dashev
    Smart UI Team


    Thanks.  For others looking at this post the solution is:
    private void cboFormula_Change(Event eventObj)
    MultiComboInputChangeEventDetail detail = eventObj[“Detail”];
    if (detail.Value != detail.OldValue)  //Redundant as fires when an item is clicked or unclicked therefore always a change
    string csv = detail.Value;
    csv = csv.Replace(” “, “”);  //The returned array is 0, 1, 4, 6 – so has a space after each comma
    var items = csv.Split(‘,’)
    .Where(m => int.TryParse(m, out _))
    .Select(m => int.Parse(m))
    myBooleanSetting = items.Contains(0);
    …. (repeat for each item)
    You get four properties in the event object:
    Value – CSV string of integer values (post-change)
    OldValue – CSV string of integer values (pre-change)
    And similar with the text strings of the items: Label and OldLabel
    If you have a long list best option is to compare the OldValue and Value to see what changed.

Viewing 3 posts - 1 through 3 (of 3 total)
  • You must be logged in to reply to this topic.