The problem is the culture being used to make the conversion. Probably, your operating system is configured for a culture that does not consider the point (i.e. .) as decimal separator.
To make the conversion, in this case you cannot let the method Convert.ToDouble use the standard operating system culture.
For this it is possible to pass a parameter to the method Convert.ToDouble indicating the crop:
Convert.ToDouble(ValueString, CultureInfo.InvariantCulture);
CultureInfo.InvariantCulture: is a culture that does not vary with time. The decimal point is always ..
Can you translate the question to English please?
– Sergio
I am trying to convert a string to double in Vb.net: Dim result as double dim Valuestring as string = -42.1942339 result = Convert.Todouble(Valuestring) Console.Writeline(result) I am receiving the following value -421942339 What I’m doing wrong?
– David Coopermine