How to take curly brace to end of previous line

I see many codes like following on the net:

public static void read()
    {
        using (StreamReader m_StreamReader = new StreamReader("C:\\myCsv.Csv")) 
        {
            while (m_StreamReader.Peek >= 0) 
            {
                string m_Str = m_StreamReader.ReadLine;
                string[] m_Splitted = m_Str.Split(new char[] { "," });
                Console.WriteLine(string.Format("{0}={1}", m_Splitted[0], m_Splitted[1]));
            }
        }
    }

However, I want to convert above to following:

public static void read() {
        using (StreamReader m_StreamReader = new StreamReader("C:\\myCsv.Csv")) {
            while (m_StreamReader.Peek >= 0) {
                string m_Str = m_StreamReader.ReadLine;
                string[] m_Splitted = m_Str.Split(new char[] { "," });
                Console.WriteLine(string.Format("{0}={1}", m_Splitted[0], m_Splitted[1]));
            }
        }
    }

Hence starting curly brace is taken to the end of previous line. How can this be done programmatically in Vim? It tried but though I can pick up starting curly brace but could not manage to take it to end of previous line.

Note: above code is from here.

Solution

Joining the next line to the current line is done with :help J in normal mode or :help :join in command-line mode.

Joining the current line to the previous line is done in normal mode by moving the cursor to the previous line with - and then joining with J. In command-line mode, you would use -, short for .-1 ("current line number minus one"), as :h address for :join: :-j, which mirrors the normal mode method quite well.

To do this on the whole buffer, you need a way to execute a given command on every isolated opening brace. This is done with :help :g:

:g/^\s*{\s*$/-j

Breakdown:

:g/<pattern>/<command> executes <command> on every line matching <pattern>,
^\s*{\s*$ matches lines with a single opening braces and optional leading and trailing whitespace,
-j joins the current line with the line above.

But the result is not correctly indented anymore so you will need something like the following command to fix the mess:

gg=G

Breakdown:

gg moves the cursor to line 1,
=G re-indents every line from the cursor to the last line, see :help =.

That said, switching from one coding style to another seems like something that should be done with a dedicated tool rather than with general text editing.