ThemeService
The ThemeService allows you to change the theme of your application at runtime. It provides a set of methods to change the theme, get the current theme, and listen to theme changes.
Console log
Persist the theme link
The Radzen.Blazor library provides a built-in service that persists the current theme in a cookie. This means that the theme will be remembered even after the user closes the browser or navigates to a different page. The theme will be restored when the user returns to the application.
1. Open Program.cs file(s) and register the CookieThemeService:
builder.Services.AddRadzenCookieThemeService(options =>
{
options.Name = "MyApplicationTheme"; // The name of the cookie
options.Duration = TimeSpan.FromDays(365); // The duration of the cookie
});
2. Open MainLayout.razor and inject the CookieThemeService:
@inject CookieThemeService CookieThemeService
3. Open the App.razor file of your application and add this code:
@code {
[CascadingParameter]
private HttpContext HttpContext { get; set; }
[Inject]
private ThemeService ThemeService { get; set; }
protected override void OnInitialized()
{
base.OnInitialized();
if (HttpContext != null)
{
var theme = HttpContext.Request.Cookies["MyApplicationTheme"];
if (!string.IsNullOrEmpty(theme))
{
ThemeService.SetTheme(theme, false);
}
}
}
}
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