Set value for input which is source of onchange event in Blazor

Question

In Blazor Server App / .NET 6 preview 4 (same for .NET 5) I would like to handle onchange event and in certain cases to dismiss user input with setting a certain value to the textbox. There is a basic code for demonstation:

<input value="@tester" @onchange="@OnChangeHandler" />

@code {

    public string tester { get; set; }

    public void OnChangeHandler(ChangeEventArgs obj)
    {
        tester = "100";
    }
}

For some reason input shows "100" only once even though the property tester is set each time when OnChangeHandler fired. input keeps a value entered by the user ignoring the fact that tester is set to "100" when onchange occurs second and third time. How can I make input always contain actual value of tester?

Answer 1

A quick dirty workaround would be something like this :

  public async Task OnChangeHandler(ChangeEventArgs obj)
    {
        tester =null;
        await Task.Delay(1); 
        tester = "100";
    }

it's not good a fix is planned in the preview 5 of dotnet6