CODEWITHSUNDEEP
c#
D-W
D-W

Reputation: 5341

Convert String to Decimal - leave digits

I've got a form which allows a user to enter a price, for example, 10.00.

However as the form is purley text a user could enter $10.00 or 10.00 for book. I cannot change the UI, this has to be done under the hood. So basically what ever the use types I just want a decimal result.

I started to do this

public decimal FilterPrice(dynamic price) {
    string convertPrice=price.ToString();

    var filterNumber=
        from letter in convertPrice
        where char.IsDigit(letter)
        select letter;

    return something;
}

However this will strip out .. Any ideas how to do this?

Upvotes: 0

Views: 405

Answers (1)

mafis
mafis

Reputation: 1165

You can solve it with a simple Regex.

    public bool TryGetPreisAsDecimal(string price, out decimal convertedPrice)
    { 
        Match match = Regex.Match(price,@"\d+(\.\d{1,2})?");

        if (match != null)
        {
            convertedPrice = decimal.Parse(match.Value);
            return true;
        }
        else
        {
            convertedPrice = 0.0m;
            return false;
        }
    }

Upvotes: 5

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