How to use Connection String in C# Language?

Hello

Yes there is option to set connection string globally, so that it can accessible to multiple pages.

We can do using we.config file like this.

And if you want to to use same connection string to the multiple controller or web form than we can use below line of code.

// from any controller or web form file
string connectionString = ConfigurationManager.ConnectionStrings["connectionstring"].ConnectionString;

I hope it will help you

Thanks