十进制解析各种字符串

Question

Hello I might have strings for example "1,1" or "1.1" or "1" or "" and from each of them I need to get results in same format so it can be saved in SQL Db as numeric (8,2)

var ci = CultureInfo.InvariantCulture.Clone() as CultureInfo;
            prikaz.Parameters.AddWithValue("@p_ub_c", Decimal.Parse(p_ub_c.Text.Replace(',', '.') == string.Empty ? "0.00" : p_ub_c.Text, ci));

Passed string is: "2500,00" but can be also "" or "2500.00"

Those values needs to be saved in sql numeric(8,2) And when the textbox p_ub_cis empty then string is 0 and I got this: System.FormatException input string was not in correct format.

May someone help me solve this out?

Thank you for your time

Answer 1

Your problem lies with the follow code fragment:

p_ub_c.Text.Replace(',', '.') == string.Empty ? "0.00" : p_ub_c.Text

This says 'take my Text and replace "," with ".", then if the result is an empty string, use "0.00", otherwise use Text'. In other words, you lose the result of the Replace.

If you change it to store the results of the Replace and parse that, it should fix the problem. Beware of someone entering eg "1,000.1" though as you'll end up with "1.000.1", which is still an invalid number.

Answer 2

您永远不会使用Replace返回的内容，应按以下方式使用它：

string.IsNullOrEmpty(p_ub_c.Text) ? "0.00" : p_ub_c.Text.Replace(',', '.');