Radzen/Blazor Newbie Refresh DropDown Value on page load based on value

Radzen.Blazor Components
1

Hi. I'm moving to Balzor server side and have already done thing with common components. Now I'm trying to update my project to Radzen components:

I'm sure this is a silly question, but I don't figure out how to do it.

In my CRUD I'm doing Create and Update in the same page. I have a RadzenDropDown that when I Create is full with my data. The problem I have is when I'm Updating an existing object. I get all my fields loaded and binded, but the DropDown is populated but the corresponing item is still "Select...".

                <RadzenDropDown AllowClear="true" AllowFiltering="true" FilterCaseSensitivity="FilterCaseSensitivity.CaseInsensitive"
                            Data=@_Events @bind-Value=@_Event.IdEvent Placeholder="Select Event..." Name="SelectedEvent" 
                            TextProperty="Title" ValueProperty="IdEvent" Change=@(args => ChangeEvent(args, "EventList")) Class="w-100" />

This is how I declared the dropdown and what I get

image
image1537×409 39.4 KB

Question is "How can I refresh/set" selected value of my Dropdown?

2

This should be enough. Try to debug your application using Visual Studio to check what's the value of _Event.IdEvent.

3

When I'm Updating an existing item, I get all the values I need, but I have to set the DropDown selected value to the corresponding value. I have to refresh or change the selected value in the dropdown. I haven't figured out how to call the dropdown; I've tried with the name, but it does not exist

   protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            if (RepoId == 0)
            {
                // create
                IsLoading = false;
            }
            else
            {
                // update
                Action = "Update";
                await LoadRepo();
            }
        }
    }

    private async Task LoadRepo()
    {
        IsLoading = true;
        StateHasChanged();
        Repo = await Task.Run(() => _dataAccessService.GetEventRepository(RepoId));
        // update Events DropDown
        long idEv = GetTbEvent(Repo.IdEvent).IdEvent;
        //**I'm missing something here**
        IsLoading = false;
        StateHasChanged();
    }