Globalization in Blazor Datetime Picker Component
14 Mar 202212 minutes to read
Globalization is the combination of adapting the control to various languages by means of parsing and formatting the date or number Internationalization
and also by adding cultural specific customizations and translating the text localization
.
Blazor server side
Add UseRequestLocalization
middle-ware in Configure method in Startup.cs file to get browser Culture Info.
Refer the following code to add configuration in Startup.cs file
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Localization;
namespace BlazorApplication
{
public class Startup
{
....
....
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
app.UseRequestLocalization();
....
....
}
}
}
The Localization library allows you to localize default text content. The DateTimePicker component has static text that can be changed to other cultures (Arabic, Deutsch, French, etc.).
The following examples demonstrate how to enable Localization for DateTimePicker in server-side Blazor samples. Here, resource file is used to translate the static text.
The Resource file is an XML file that contains the strings(key and value pairs) that you want to translate into different languages. You can also refer Localization link to know more about how to configure and use localization in the ASP.NET Core application framework.
-
Open the Startup.cs file and add the below configuration in the ConfigureServices function as follows.
using Syncfusion.Blazor; using System.Globalization; using Microsoft.AspNetCore.Localization; namespace BlazorApplication { public class Startup { .... .... public void ConfigureServices(IServiceCollection services) { .... .... services.AddSyncfusionBlazor(); services.AddLocalization(options => options.ResourcesPath = "Resources"); services.Configure<RequestLocalizationOptions>(options => { // define the list of cultures your app will support var supportedCultures = new List<CultureInfo>() { new CultureInfo("de") }; // set the default culture options.DefaultRequestCulture = new RequestCulture("de"); options.SupportedCultures = supportedCultures; options.SupportedUICultures = supportedCultures; options.RequestCultureProviders = new List<IRequestCultureProvider>() { new QueryStringRequestCultureProvider() // Here, You can also use other localization provider }; }); services.AddSingleton(typeof(ISyncfusionStringLocalizer), typeof(SampleLocalizer)); } } }
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Then, write a class by inheriting ISyncfusionStringLocalizer interface and override the Manager property to get the resource file details from the application end.
using Syncfusion.Blazor; namespace blazorCalendars { public class SampleLocalizer : ISyncfusionStringLocalizer { public string Get(string key) { return this.Manager.GetString(key); } public System.Resources.ResourceManager Manager { get { return blazorCalendars.Resources.SyncfusionBlazorLocale.ResourceManager; } } } }
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Add .resx file to Resource folder and enter the key value (Locale Keywords) in the Name column and the translated string in the Value column as follows.
Name Value (in Deutsch culture) DateTimePicker_Placeholder Wählen Sie ein Datum und eine Uhrzeit DateTimePicker_Today Heute -
Finally, Specify the culture for DateTimePicker using
locale
property.@using Syncfusion.Blazor.Calendars <SfDateTimePicker TValue="DateTime?" Locale="de"></SfDateTimePicker>
Blazor WebAssembly
By default, the DateTimePicker week and month names are specific to the American English
culture. It utilizes the Blazor Internationalization
package to parse and format the date object based on the culture by using the official UNICODE CLDR JSON data.
The following steps explain how to render the DateTimePicker in German culture (‘de-DE’) in Blazor Web Assembly application.
-
Open the program.cs file and add the below configuration in the Builder ConfigureServices function as follows.
using Syncfusion.Blazor; using Microsoft.AspNetCore.Builder; namespace WebAssemblyLocale { public class Program { public static async Task Main(string[] args) { .... .... builder.Services.Configure<RequestLocalizationOptions>(options => { // Define the list of cultures your app will support var supportedCultures = new List<System.Globalization.CultureInfo>() { new System.Globalization.CultureInfo("en-US"), new System.Globalization.CultureInfo("de"), }; // Set the default culture options.DefaultRequestCulture = new Microsoft.AspNetCore.Localization.RequestCulture("de"); options.SupportedCultures = supportedCultures; options.SupportedUICultures = supportedCultures; options.RequestCultureProviders = new List<Microsoft.AspNetCore.Localization.IRequestCultureProvider>() { new Microsoft.AspNetCore.Localization.QueryStringRequestCultureProvider() }; }); .... .... } } }
-
Download the required locale packages to render the Blazor DateTimePicker component with specified locale.
-
To download the locale definition of Blazor components, use this link.
-
After downloading the
blazor-locale
package, copy theblazor-locale
folder with required local definition file intowwwroot
folder. -
By default, the
blazor-locale
package contains the localized text for static text present in components like button text, placeholder, tooltip, and more. -
Set the culture by using the
SetCulture
method.@using Syncfusion.Blazor.Calendars @inject HttpClient Http; <SfDateTimePicker TValue="DateTime?" Locale="de"></SfDateTimePicker> @code { [Inject] protected IJSRuntime JsRuntime { get; set; } protected override async Task OnInitializedAsync() { this.JsRuntime.Sf().LoadLocaleData(await Http.GetJsonAsync<object>("blazor-locale/src/de.json")).SetCulture("de"); } }
Customize the localized text
-
You can change the localized text of particular component by editing the
wwwroot/blazor-locale/src/.json
file. -
In the following code, modified the localized text of
today button
andplaceholder
inde
culture.[
wwwroot/blazor-locale/src/de.json
]{ "de": { "datetimepicker": { "today": "Heutiges Datum", "placeholder": "Wählen Sie ein Datum und eine Uhrzeit aus" } } }
Right-To-Left
The DateTimePicker supports RTL (right-to-left) functionality for languages like Arabic and Hebrew to display the text in the right-to-left direction. Use EnableRtl property to set the RTL direction.
The following code example initialize the DateTimePicker component in Arabic
culture.
@using Syncfusion.Blazor.Calendars
@inject HttpClient Http;
<SfDateTimePicker TValue="DateTime?" Locale="ar" EnableRtl=true></SfDateTimePicker>
@code {
[Inject]
protected IJSRuntime JsRuntime { get; set; }
protected override async Task OnInitializedAsync()
{
this.JsRuntime.Sf().LoadLocaleData(await Http.GetJsonAsync<object>("blazor-locale/src/ar.json")).SetCulture("ar");
}
}