using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"\s+";
string substitution = @"";
string input = @" select * from expressions
where if(
'+' = @o := operation,
a + b,
if(
@o = '-',
a - b,
if(
@o = '*',
a * b,
a / b
)
)
) = c";
RegexOptions options = RegexOptions.Multiline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx