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How to achieve that? Firstly, you should prepare your RESX files in Visual Studio. As an example, I prepared 3 files – for English, Polish and German language:
Each file contains one key:
Now, let’s import the files into CRM system. The most important part here is that name of the Web Resource should be built using the following convention:
So for example:
for Polish messages.
There are some other possibilities here, I will write more about that in a second. You must remember to choose proper “Language” value when creating web resource. So you should end up with something like this:
Now we are ready to use them in our scripts. We should first register all the required resources as dependencies for script in which we want to use them, so if I want to use them in my lead.js I should go to the new tab “Dependencies” in properties of my lead.js Web Resource:
If you did not hear about this new functionality of D365 9.0 – dependencies allow you to register dependent libraries for your script, so if it uses jQuery, react.js and your custom common.js, you can simply register them as dependencies and don’t have to register all this scripts always together with lead.js (this is also working in ribbons, so no more isNaN dummy calls!)
After all that we can simply call Xrm.Utility.getResourceString function to get the proper token:
And we can happily see our translated message, when we change to Polish language:
We can switch to English and we will see:
Really easy, isn’t it?
How this getResourceString function works? Well it simply looks for the proper Web Resource based on the current user preferred language, but it must have the proper name. If, for example, we call Xrm.Utility.getResourceString(“messages”, “myKey”) and our current language is Polish (and our Organization base language is English), it will be looking for the following files:
Then it will choose whichever first of these will have matching Language chosen in WebResource properties. That’s why I suggested to use NAME.LCID.resx – although there are some other possible ways of naming, this one looks the most clear and consistent for me.