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abp/docs/en/UI/Blazor/Localization.md

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# Blazor UI: Localization
Blazor applications can reuse the same `IStringLocalizer<T>` service that is explained in the [localization document](../../Localization.md).
All the localization resources and texts available in the server side are usable in the Blazor application.
## IStringLocalizer
`IStringLocalizer<T>` (`T` is the localization resource class) can be injected in any service or component to use the localization service.
### Razor Components
Use `@inject IStringLocalizer<MyProjectNameResource>` to use the localization in a razor component.
**Example: Localization in a Razor Component**
````csharp
@page "/"
@using MyCompanyName.MyProjectName.Localization
@using Microsoft.Extensions.Localization
@inject IStringLocalizer<MyProjectNameResource> L
<h1>
@L["LongWelcomeMessage"]
</h1>
````
> `L` is a name that we love and use as the name of a `IStringLocalizer` instance, while you can give any name.
#### The AbpComponentBase
`AbpComponentBase` is a useful base class that you can derive the components from. It has some useful properties/methods you typically need in a component.
The `AbpComponentBase` already defines a base `L` property (of type `IStringLocalizer`). It only requires to set the resource type (in the constructor of the derived class). If you created your application from the ABP's application startup template, then you should have a *YourProjectComponentBase* class in the Blazor project. Inherit components from this class to have the localizer pre-injected.
**Example: Derive from the base component class**
````csharp
@page "/"
@inherits MyProjectNameComponentBase
<h1>
@L["LongWelcomeMessage"]
</h1>
````
### Other Services
`IStringLocalizer<T>` can be injected into any service.
**Example**
````csharp
public class MyService : ITransientDependency
{
private readonly IStringLocalizer<TestResource> _localizer;
public MyService(IStringLocalizer<TestResource> localizer)
{
_localizer = localizer;
}
public void Foo()
{
var str = _localizer["HelloWorld"];
}
}
````
### Format Arguments
Format arguments can be passed after the localization key. If your message is `Hello {0}, welcome!`, then you can pass the `{0}` argument to the localizer like `_localizer["HelloMessage", "John"]`.
> Refer to the [Microsoft's localization documentation](https://docs.microsoft.com/en-us/aspnet/core/fundamentals/localization) for details about using the localization.
## See Also
* [Localization](../../Localization.md)