CustomComponent Set attribute

[Vinod_Pillai]

Hello Team,
I am trying to use custom component to display a test page designed in IDE. I need to load data in the customcomponent based on the user selection from dropdown in the target page.

1. Created a page and in load event fetched the required data using Attributes property
   
   
2. In the target page added a dropdown bound to a pageproperty CustomerID
3. Added a customcomponent to this page and set the Source and Attribute Property bound to above pageproperty CustomerID
   
   

I am able to compile and run page and also display values in custom component based on default attributes.

I need to load/refresh the customercomponent page values based on the dropdown selection on the target page.
Kindly guide how to achieve this.

[Gottegubben]

A Refresh() on DropdownChange might work?

[Vinod_Pillai]

Tried calling Reload() in the change event of dropdown

        protected async System.Threading.Tasks.Task Dropdown0Change(dynamic args)
        {
            await InvokeAsync(StateHasChanged);
            await Load();
        }

Load event does fire but custom control is not refreshed

[Vinod_Pillai]

The issue resolved by binding values in the attributes of custom component

1. Add required page properties
2. Invoke datasource methods to fill the dropdown based on the categoryID
   
   
3. In the target page set attributes and also callback event to refresh the parent page
4. Add parameters to the customcontrol.razor.cs file

        [Parameter]
        public int pCategoryID 
        {
            get
            {
                return _CategoryID;
            }
            set
            {
                if (!object.Equals(_CategoryID, value))
                {
                    var args = new PropertyChangedEventArgs() { Name = "CategoryID", NewValue = value, OldValue = _CategoryID };
                    _CategoryID = value;
                    OnPropertyChanged(args);
                    Reload();
                }
            }
        }

Now it works as expected