Data binding in Blazor: How to propagate values out of a component?

Question

I have a fairly simple component, which looks like this:

    

             


        
                      

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Answer 1

You need to add an EventCallback parameter to do that:

@code {

    [Parameter]
    public string Value { get; set; }

    [Parameter]
    public EventCallback<string> ValueChanged { get; set; }
}

read the section Data binding/Component parameters