C# - using statement with multiple variables

In this short article, we would liek to show how to use using statement with multiple variables in C#.

Quick solution:

using (var stream = new FileStream("file.txt", FileMode.Open))
using (var reader = new StreamReader(stream))
//     add more usings here ...
{
    string line = reader.ReadLine();

    // ...
}

C# 8 example

In C# 8 we can join usings by adding coma as variables separators.

using (
    var stream = new FileStream("file.txt", FileMode.Open),
    var reader = new StreamReader(stream)
//  add more usings here ...
)
{
    string line = reader.ReadLine();

    // ...
}

References

1. using statement (C# Reference) - Microsoft Docs