C# – Using Bing’s Translation Web Service

Microsoft’s Bing Translator provides a translation web service which can be called via C#. In this post I’ll outline the steps to use this web service, and create a simple application to perform translations.

First, you’ll need to create a valid application ID for your application. This is required in order to be able to call the web service. Head over to Bing’s Developer Centre and sign in with your Windows Live ID. Follow the steps to create a new ID for your application, it’s a simple process and shouldn’t take you any more than 2 minutes.

Next, create a new project in Visual Studio, (I’ve created a simple Windows forms application to demonstrate this, but you could just as easily create a simple console application). You’ll need to add a service reference to your application either way. Do this by right-clicking on your solution and selecting ‘Add Service Reference’. Under ‘Address’, add this:


Under ‘namespace’, be sure to enter a descriptive name for the service reference. Now, for the code to perform translations (You’ll need to add in the application ID you created earlier in order for this to work):

// Translating from English to German

string textToTranslate = "Hello, world";
string sourceLanguage = "en";
string targetLanguage = "de"
string translatedText = "";

     BingTranslatorService.LanguageServiceClient client = new    BingTranslatorService.LanguageServiceClient();
    translatedText = client.Translate("Your App ID", textToTranslate, sourceLanguage,   targetLanguage);
catch (Exception ex)
    MessageBox.Show("An error has occurred: " + ex.ToString(), "Error");

‘BingTranslatorService’ above is whatever you called the service reference added earlier. I’ve created this sample application to show how easy it is to create a simple translation application:

Simple Translation Application

Download the full source code, here. You’ll need to add in your application ID in order for this to work properly.

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