Did you know, that you can use in Firebird .NET Data Provider more “firebirdish” connection strings?
You can put into FbConnection "database=<hostname/port:path>;user=<user>;password=<password> or the hostname/port:path can be //hostname:port/path.
Jiří Činčura is .NET, C# and Firebird expert. He focuses on data and business layers, language constructs, parallelism, databases and performance. For almost two decades he contributes to open-source, i.e. FirebirdClient. He works as a senior software engineer for Microsoft. Frequent speaker and blogger at www.tabsoverspaces.com.