On save handling of dropdown multi-select

Radzen Studio Blazor WebAssembly
1

hi guys,

i have a fairly simple question, i can't seem to wrap my head around.

on a [ADD] scheduling page, i set some paramaters and then allocate a number of users to the schedule.
to do this i'm using a dropdown list for users with a multi-select enabled.

the action is really easy;

  1. create a new record object and esatblish the unique ID as a part of page load
  2. save the new record on form submit
  3. call a function to save the users and link them using the associated schedule ID

the question is, how do i access the IEnumerable from the dropdown list in the page partial class?

what im thinking is that i include a 'onChange' event for the dropdown list to maintain the recorded values in a list declared in the partial class.
then after save, i could call a function to write the list to the database linking the list to the newly created schedule record.

but again, i'm not sure on the best pattern here

2

In the page partial class you can access everything that is available in page - that's what partial classes are for.

3

hi @enchev i must be missing something simple here,
this is the item name in radzen studio

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image1357×552 39.6 KB

notice in the partial class that i can't use it / locate it

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image1609×576 98 KB

4

This is just the name of the form component it's not related to data nor selection.

5

yeah okay so the data for this component comes from getAspNetUsersResult

how do i access the selected values from the component?

sorry for the seemingly simple question, i'm sure it's easy when you have done it thousands of times

6

selected values are the variable bound to Value of the component.

7

yes hence my question, how do i access the component "assuranceScheduleUsersDDL' in the partial class?

i would have thought a code line like
var xyz = assuranceScheduleUsersDDL.Value;

would make xyz an IEnumerable with the values from the dropdown list.

however i can't seem to get any reference to assuranceScheduleUsersDDL in the partial class to work

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image921×217 20.6 KB

it must be soo obvious that i can't see it :smiley:

8

You should read carefully my previous reply. You should bind a page property to the DropDown Value and access the property.

9