What is the C# equivalent of NaN or IsNumeric?

Question

What is the most efficient way of testing an input string whether it contains a numeric value (or conversely Not A Number)? I guess I can use Double.Parse or a

Answer 1

You can still use the Visual Basic function in C#. The only thing you have to do is just follow my instructions shown below:

1. Add the reference to the Visual Basic Library by right clicking on your project and selecting "Add Reference":

2. Then import it in your class as shown below:

   using Microsoft.VisualBasic;

3. Next use it wherever you want as shown below:

               if (!Information.IsNumeric(softwareVersion))
           {
               throw new DataException(string.Format("[{0}] is an invalid App Version!  Only numeric values are supported at this time.", softwareVersion));
           }
   

Hope, this helps and good luck!