How Can I Implement Multi-Language Support in My WinForms Application?

Multi-Language Support in WinForms: How to Do It

When developing applications with a global audience, supporting multiple languages is crucial. In WinForms, there are several techniques to accomplish this, such as leveraging localizable properties and resource files.

Localizing with Form Properties

WinForms forms have two properties, Localizable and Language, that enable language localization. By setting Localizable to true, you can design controls for the default language. Then, set Language to a specific culture to modify properties for that language, storing localizable values in separate resource files.

Resource Files for Messages and Images

Winforms provides a Resources.Resx file for localizing messages and images. You can also create additional .resx files and add key-value pairs for specific cultures. For instance, Strings.resx could have keys and values for English. This approach allows you to retrieve localized strings dynamically, such as:

MessageBox.Show(Properties.Resources.AreYouSure);

This will display the value for "AreYouSure" from the appropriate resource file based on the current UI culture.

Changing Language at Runtime

To switch languages during runtime, you can set the culture using System.Globalization.CultureInfo:

System.Threading.Thread.CurrentThread.CurrentCulture =
    System.Globalization.CultureInfo.GetCultureInfo("fa");

System.Threading.Thread.CurrentThread.CurrentUICulture =
    System.Globalization.CultureInfo.GetCultureInfo("fa");

Place this code at the start of your application or before displaying a form.

Additional Resources

• [Globalizing Windows Forms](https://docs.microsoft.com/en-us/dotnet/framework/winforms/globalization/globalinzing-windows-forms)
• [Walkthrough: Localizing Windows Forms](https://docs.microsoft.com/en-us/dotnet/framework/winforms/globalization/walkthrough-localizing-windows-forms)
• [How to: Set the Culture and UI Culture for Windows Forms Globalization](https://docs.microsoft.com/en-us/dotnet/framework/winforms/globalization/how-to-set-the-culture-and-ui-culture-for-windows-forms-globalization)

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