CODEWITHSUNDEEP
blazorblazor-webassembly
SweetPony
SweetPony

Reputation: 19

"Object reference not set to an instance of an object" while using bind

html:

<input @bind="title"/>

<div id="chat-bottom-button-right-row">                
  <button @onclick="(() => RunMovie(title))">Chat</button> //I'd like to use title from input
</div>

c# code:

[Inject]
    public IJSRuntime Js { get; set; }
    private MovieDataDetail movieDetail = null;

    string title;
    private async Task RunMovie(string title)
    {
        movieDetail = await TmdbApi.GetAllMovieInfo(title); //Object reference not set to an instance of an object
        await Js.InvokeVoidAsync("kinX").AsTask();
    }

I'd like to use title from input.

title always null even if I write something to input

Upvotes: 0

Views: 575

Answers (1)

Neil W
Neil W

Reputation: 9162

If you want two-way binding (i.e. the input is populated from the variable AND the variable is updated by the input) then use:

<input @bind-value=@title />

Upvotes: 1

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