I am creating a multilingual site. I create my resources files for each language and I reference in HTML and Code Behind, but now I have a doubt.

 Hi Vendevelop,

Yes you can create a resource string with place holder where you can pass a value based on different conditions.

You can have a resource string like "Welcome to our page Mr {0}" with some resource key "WelcomeMessage"

In the code behind before using resource string do it as follows:

string parameterizedResString = string.Format(Resources.WebResources.WelcomeMessage, paramterVar);

Now you use parameterizedResString, here paramterVar value will differ based on language or logic.

Thanks,

Suresh Kdam.