@code private int count = 0;

count++; // No manual UI refresh needed – automatic re-render

InteractiveServer is one of the interactive render modes in Blazor. When a component uses this mode, it runs server-side (on the ASP.NET Core server), and its UI updates are sent to the client over a real-time WebSocket (SignalR) connection.

private void Increment()

@rendermode InteractiveServer <button @onclick="Increment">Click me</button> <p>Count: @count</p>

Rendermode Interactiveserver May 2026

@code private int count = 0;

count++; // No manual UI refresh needed – automatic re-render rendermode interactiveserver

private void Increment()

@rendermode InteractiveServer <button @onclick="Increment">Click me</button> <p>Count: @count</p> @code private int count = 0