BlazorFiddle - Blazor .Net Developer Playground and Code Editor in the Browser.

Index

TabPage

TabControl

@page "/"

<h1>Tab Issue</h1>

Data Count: @View.Data.Count
<button @onclick='(() => Add($"Tab {(View.Data.Count + 1)}"))'>Add Tab</button>

<TabControl>
    @foreach (var data in View.Data)
    {
        <TabPage Text='@data'>
            @data <button @onclick="(() => Remove(data))">Remove</button>
        </TabPage>
    }
</TabControl>

@code{

    public class ViewModel{
        public List<string> Data = new List<string>{
                "Tab 1","Tab 2","Tab 3"
            };        
    }

    public ViewModel View { get; set; }

    protected override async Task OnInitializedAsync()
    {
        View = new ViewModel();
    }

    public void Add(string data)
    {
        View.Data.Add(data);
        StateHasChanged();
    }

    public void Remove(string data)
    {
        View.Data.Remove(data);
        StateHasChanged();
    }
}

namespace BlazorFiddleProject
{
    using Microsoft.AspNetCore.Components.Builder;
    using Microsoft.Extensions.DependencyInjection;


    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
        }

        public void Configure(IComponentsApplicationBuilder app)
        {
            app.AddComponent<App>("app");
        }
    }
}

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width">
    <title>BlazorFiddleProject</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
	
	<script src="_content/MatBlazor/dist/matBlazor.js"></script>

    <style>
        app { }
    </style>

    <script type="text/javascript">
    </script>
</head>
<body>
<app>Loading...</app>

<script src="_framework/blazor.webassembly.js"></script>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</body>
</html>

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