IsNumeric() function in C#

IsNumeric() function returns True if the data type of Expression is Boolean, Byte, Decimal, etc or an Object that contains one of those numeric types, It returns a value indicating whether an expression can be converted to a numeric data type. It also returns True if Expression is a Char or String that can be successfully converted to a number.

IsNumeric returns False if Expression is of data type Date or of data type Object and it does not contain a numeric type, It has to do with the format/type of the data, not the actual value of the data.  And "NaN"  I believe is technically of type float. IsNumeric returns False if Expression is a Char or String that cannot be converted to a number.

Example:

 using Microsoft.VisualBasic;
 using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Data;
 using System.Diagnostics;
 
 public class Sample
 {
     public static void Main()
     {
         string Data1 = null;
         System.Text.StringBuilder Output = new System.Text.StringBuilder();
  
         Output.AppendLine(string.Format("IsNumeric({0}) ... {1}", Data1, Information.IsNumeric(Data1)));
         Output.AppendLine();
  
         Data1 = "-11.1231";
         Output.AppendLine(string.Format("IsNumeric({0}) ... {1}", Data1, Information.IsNumeric(Data1)));
         Output.AppendLine();
  
         Data1 = "October 21, 1987";
         Output.Append(string.Format("IsNumeric({0}) ... {1}", Data1, (Data1 == null)));
  
         Console.WriteLine(Output.ToString());
         Console.ReadLine();
  
     }
 }

Output:

Have a nice Coding