How do I parse a string with a decimal point to a double?

Question

I want to parse a string like \"3.5\" to a double. However,

double.Parse(\"3.5\") 

yields 35 and

double.Pars         


        

Answer 1

The following code does the job in any scenario. It's a little bit parsing.

List inputs = new List()
{
    "1.234.567,89",
    "1 234 567,89",
    "1 234 567.89",
    "1,234,567.89",
    "123456789",
    "1234567,89",
    "1234567.89",
};
string output;

foreach (string input in inputs)
{
    // Unify string (no spaces, only .)
    output = input.Trim().Replace(" ", "").Replace(",", ".");

    // Split it on points
    string[] split = output.Split('.');

    if (split.Count() > 1)
    {
        // Take all parts except last
        output = string.Join("", split.Take(split.Count()-1).ToArray());

        // Combine token parts with last part
        output = string.Format("{0}.{1}", output, split.Last());
    }

    // Parse double invariant
    double d = double.Parse(output, CultureInfo.InvariantCulture);
    Console.WriteLine(d);
}